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Engineering Science and Materials Commons™
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- 2.25Cr-1Mo steel; Inconel 625; Hot-wire TIG; Cladding; Corrosion behaviors (1)
- 2D composite; MXene; Dielectrics; Structural; Morphology (1)
- 316L stainless steel; Plastic deformation; Surface relief; Contact angle; Surface free energy (1)
- 65Mn carbon steel; Tensile strength; Hardness; Toughness; Wear; (1)
- 950 silver alloy; microstructure; mechanical properties; tarnish and corrosion resistance; surface analysis (1)
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- AA6063-T5; Rotary friction welding; Three-level factorial design (1)
- AZO thin film; HiPIMS; Pulse frequency; Transparent conductive oxides (1)
- Acetobacter xylinum; Bacterial cellulose; Mulching film; Rotten fruits; Solvent casting (1)
- Acetylated starch; k-Carrageenan; Mandelic acid; Modification; Wound dressing (1)
- Activated carbon fibers; Kapok; Pre-carbonization; Chemical activation; Supercapacitors (1)
- Activated carbon; Coconut husk; MW absorber; Porous structure; Polymer composite (1)
- Activated carbon; Oxidative modification; Porosity properties; Sago waste (1)
- Activated carbon; Rice husk ash; Titanium dioxide; Dye degradation; Water treatment; (1)
- Activation energy; AZ31 alloy; Grain growth; Kinetics; Static recrystallization; Rolling (1)
- Additive manufacturing; Printing parameter; 17-4PH; Sintering; Density (1)
- Additive manufacturing; Ti-6Al-4V; Vibration absorption; Anisotropy; Post-heat treatment (1)
- Adhesion; Oxide scale; Hot-Rolled steel; Silicon (1)
- Adsorption; Biochar; Elephant dung; Phosphate; Pyrolysis (1)
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- Aerofoil; M13; Eppler 1233; Computational; Pressure co efficient (1)
- Agricultural waste; Biochar; Composite; Rambutan wood; Zinc oxide; (1)
- Al/Cu-grid/Al metallic composite; Al-based composite; Interface diffusion (1)
- Al5052 composites; Stir casting; Titanium diboride (TiB2); Zirconia (ZrO2); Mechanical properties; (1)
- Al7075; Strontium; Tungsten Carbide; Microstructure; Wear analysis; Metal matrix composite (1)
- AlSi12Cu alloys; Microstructure; Aging; Precipitation; Hardness (1)
- AlTiC substrate; Fixed abrasive; Lapping material removal rate; Coefficient of friction; Surface finish (1)
- Alginate; Bioplastics; Biopolymer; Carrageenan; Composites; K. alvarezii (1)
- Alumina ceramic; Aluminum cubic lattice sandwich panels; Armor; Ballistic performance (1)
- Alumina; Granules; Sintering; Shrinkage; Weight loss; (1)
- Aluminium 6061; Powder metallurgy; MWCNTs; Graphene; Wear (1)
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Articles 181 - 210 of 502
Full-Text Articles in Engineering Science and Materials
Development Of Antioxidant Film Based On Gelatin And Carboxymethylcellulose Incorporated With Tecoma Stans (L.) Juss. Ex Kunth Petals Extract For Biodegradable Food Packaging, Pacharawan Ratanasongtham, Passara Sukplee, Yutthana Wongnongwa
Development Of Antioxidant Film Based On Gelatin And Carboxymethylcellulose Incorporated With Tecoma Stans (L.) Juss. Ex Kunth Petals Extract For Biodegradable Food Packaging, Pacharawan Ratanasongtham, Passara Sukplee, Yutthana Wongnongwa
Journal of Metals, Materials and Minerals
The aim of this research was to develop a novel combination of antioxidant blended film for use as biodegradable packaging in the food industry. The antioxidant film was prepared based on gelatin (G) and carboxymethyl cellulose (CMC) incorporated with Tecoma stans (L.) Juss. ex Kunth petals extract (TKE) at various concentrations (0.5, 1.0, and 2.0 mg∙L‒1) via solution casting method. The structural and surface morphology of G/CMC-TKE film were characterized using FTIR spectrometry technique and scanning electron microscopy (SEM), including determining antioxidant activity, water solubility, water vapor permeability, and biodegradability. According to FTIR analysis, the significant interaction between the gelatin …
The Effect Of Mixing Sequence On Synthesis Of Pp-G-Gma Compatibilizer For Multilayer Packaging (Mlp) Compounding, Fitri Ayu Radini, Firda Apriyani, Yogi Angga Swasono, Reza Pahlevi Rudianto, Nonni Soraya Sambudi, Yose Fachmi Buys
The Effect Of Mixing Sequence On Synthesis Of Pp-G-Gma Compatibilizer For Multilayer Packaging (Mlp) Compounding, Fitri Ayu Radini, Firda Apriyani, Yogi Angga Swasono, Reza Pahlevi Rudianto, Nonni Soraya Sambudi, Yose Fachmi Buys
Journal of Metals, Materials and Minerals
Melt recycling Multilayer Packaging (MLP) waste is difficult due to challenging separation procedures. However, blending techniques with compatibilizers can simplify MLP waste melt recycling. PP-g-GMA is a common compatibilizer in polyolefin and PET blends. PP-g-GMA compatibilizer was synthesized by utilizing an internal mixer at 175℃, 50 rpm, and 10 min using styrene as a comonomer. Titration was a method to examine effect of three different sequences of adding the BPO initiator on GMA grafting. Each sequence's PP-g-GMA samples were compounded with MLP waste using a twin-screw extruder and injection molded to make tensile test specimens. FTIR analysis shows that the …
Evaluation Of The Effect Of Strontium And Tungsten Carbide On The Microstructure Evolution, Tribological And Mechanical Behaviour Of Al-Zn-Mg-Cu-5sr-Wc Metal Matrix Composite, Jeffin Johnson, Rosari Raja
Evaluation Of The Effect Of Strontium And Tungsten Carbide On The Microstructure Evolution, Tribological And Mechanical Behaviour Of Al-Zn-Mg-Cu-5sr-Wc Metal Matrix Composite, Jeffin Johnson, Rosari Raja
Journal of Metals, Materials and Minerals
The present study focused on the experimental investigation of the metallurgical, tribological, and mechanical behavior of the developed Al-Zn-Mg-Cu-Sr-WC (Al7075-Sr-WC) metal matrix composite. The effect of the reinforcements such as strontium and tungsten carbide (WC) along with a 2 wt% magnesium as the wetting agent during the stir casting of the synthesized aluminum metal matrix composite (MMC) was investigated by varying the weight percentages. The microstructure examination was characterized using field emission scanning electron microscopy (FE-SEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive spectroscopy (EDS) techniques. Wear analysis and mechanical testing were conducted to study the effect …
The Effect Of Printing Parameters On The Properties Of 17-4 Ph Stainless Steel Fabricated By Material Extrusion Additive Manufacturing, Phanuphak Seensattayawong, Chanun Suwanpreecha, Natthanicha Boonlert, Sukrit Songkuea, Anchalee Manonukul
The Effect Of Printing Parameters On The Properties Of 17-4 Ph Stainless Steel Fabricated By Material Extrusion Additive Manufacturing, Phanuphak Seensattayawong, Chanun Suwanpreecha, Natthanicha Boonlert, Sukrit Songkuea, Anchalee Manonukul
Journal of Metals, Materials and Minerals
The 17-4PH stainless steel filament was characterised and utilised to study the effect of printing parameters, i.e. printing temperature, layer thickness, infill pattern and extrusion multiplier on the physical properties. The as-printed and as-sintered internal structures were analysed. The results showed that the as-printed density increases with increasing printing temperature and extrusion multiplier and decreasing layer thickness. The use of the line infill pattern also provided slightly higher as-printed density than the concentric infill pattern due to the low fraction of void between deposited paths. After sintering, the trace of these voids can be observed together with smaller-size residual pores …
The Mechanochemistry Of Lanthanum Dihydride (Lah2) With Hydrogen (H2) Using The Ball-Mill Process And The Effect Of Oxidation On The Resulting Products, Andika Widya Pramono, Satrio Herbirowo, Agung Imaduddin, Iwan Dwi Antoro, Heri Nugraha, Hendrik -, Anung Syampurwadi, Ines Hayatun Nufus, Nihayatul Umna, Silvia Farah Diba, Fina Fitratun Amaliyah
The Mechanochemistry Of Lanthanum Dihydride (Lah2) With Hydrogen (H2) Using The Ball-Mill Process And The Effect Of Oxidation On The Resulting Products, Andika Widya Pramono, Satrio Herbirowo, Agung Imaduddin, Iwan Dwi Antoro, Heri Nugraha, Hendrik -, Anung Syampurwadi, Ines Hayatun Nufus, Nihayatul Umna, Silvia Farah Diba, Fina Fitratun Amaliyah
Journal of Metals, Materials and Minerals
The complex behavior of LaH2 during ball milling was investigated in this study, with its mechanical, chemical, and morphological changes explored. The relationship between milling time and hydrogen pressure reduction was uncovered through detailed experiments, reflecting the dynamic nature of the process. A transient yet significant event was observed upon unsealing the milling jar post-milling: the emergence of a minor fire ember, indicative of the interplay between mechanical forces and chemical reactivity within the LaH2 powder. Profound changes in the structure, composition, and shape were unraveled using advanced techniques such as X-ray diffraction (XRD), scanning electron microscopy coupled with energy-dispersive …
Enhancing The Efficiency Of Hemp Fiber Dyeing With Natural Dyes: Indigo And Lac, Jadsadaporn Chouytan, Rajapol Thirawat, Dhea Khotradha, Tanawat Ruangteprat, Ing-Orn Sittitanadol, Somchai Udon
Enhancing The Efficiency Of Hemp Fiber Dyeing With Natural Dyes: Indigo And Lac, Jadsadaporn Chouytan, Rajapol Thirawat, Dhea Khotradha, Tanawat Ruangteprat, Ing-Orn Sittitanadol, Somchai Udon
Journal of Metals, Materials and Minerals
Hemp fibers dyed with natural dyes are environmentally sustainable, but it is typically difficult to achieve an intense shade and washing durability. In this study, mercerization and cationization using polyelectrolyte, Poly-diallyldimethylammonium chloride (polyDADMAC), were chosen to enhance the dyeing efficiency and mechanical properties. Indigo and lac were chosen as natural dyes due to their widespread use. SEM demonstrated that untreated fibers contained the non-cellulose boundary layer on the surfaces, but after mercerization, the surfaces were smoother, making them suitable for absorbing natural dyes. In agreement with the FT-IR, the spectra of non-cellulose disappeared after mercerizing. Following cationization, the FT-IR spectra …
Development Of Pla/Ha Porous Scaffolds With Controlled Pore Sizes Using The Combined Freeze Drying And Sucrose Leaching Technique For Bone Tissue Engineering, Sunisa Singhawannurat, Panuwat Lawtae, Catleya Rojviriya, Chalermluck Phoovasawat
Development Of Pla/Ha Porous Scaffolds With Controlled Pore Sizes Using The Combined Freeze Drying And Sucrose Leaching Technique For Bone Tissue Engineering, Sunisa Singhawannurat, Panuwat Lawtae, Catleya Rojviriya, Chalermluck Phoovasawat
Journal of Metals, Materials and Minerals
The combination of freeze drying and sucrose leaching technique was employed to fabricate PLA/HA scaffolds with controlled pore size. The influence of the HA content and sucrose size on the scaffold properties was investigated. The fabricated scaffolds showed porous properties with a porosity of 44% to 58% and pore size of 461 μm to 688 μm. The results indicated that the scaffolds possessed favorable porous properties, illustrated by good interconnectivity, appropriate pore size, and suitable porosity. These characteristics were crucial for facilitating bone cell growth and promoting the formation of new tissue within the scaffold structure. The compressive modulus of …
Leonardite Humic Acid Activated Carbon/Mno Composite Nanostructures For Supercapacitors, Artit Ausavasukhi, Thanchanok Siriphala, Wanwisa Limphirat, Sukanya Nilmoung
Leonardite Humic Acid Activated Carbon/Mno Composite Nanostructures For Supercapacitors, Artit Ausavasukhi, Thanchanok Siriphala, Wanwisa Limphirat, Sukanya Nilmoung
Journal of Metals, Materials and Minerals
This work reports the preparation and electrochemical studies of activated carbon derived from leonardite humic acid composited with MnO2 for supercapacitors. Activated carbon contains high conductivity, high specific surface area, and accommodates large volume expansion/contraction during charging/discharging process. Meanwhile, MnO2 has very high theoretical specific capacity (1370 F∙g‒1). Their composite could significantly improve both the storage performance and cycle stability of supercapacitors. Moreover, humic acid from leonardite was selected to add value to this waste and reduce environmental pollution. By varying the carbonization temperature (500℃ to 800℃), the prepared samples carbonized at 800℃ exhibited fascinating properties. The oxidation state of …
Biosynthesis Of Zinc Oxide Nanoparticles Using Water Hyacinth Extracts: Characterization, Evaluation Of Antimicrobial And Dye Removal, Phiphat Sonthongphithak, Chonchanok Muangnapoh, Chalita Ratanatawanate, Teerasak E-Kobon, Akkharadet Piyasaengthong, Piyorot Hongsachart, Manop Sriuttha, Nipaporn Sengkhamparn, Anto Cordelia Tanislaus Anthony Dhanapal, Kitiyaporn Wittayanarakul
Biosynthesis Of Zinc Oxide Nanoparticles Using Water Hyacinth Extracts: Characterization, Evaluation Of Antimicrobial And Dye Removal, Phiphat Sonthongphithak, Chonchanok Muangnapoh, Chalita Ratanatawanate, Teerasak E-Kobon, Akkharadet Piyasaengthong, Piyorot Hongsachart, Manop Sriuttha, Nipaporn Sengkhamparn, Anto Cordelia Tanislaus Anthony Dhanapal, Kitiyaporn Wittayanarakul
Journal of Metals, Materials and Minerals
In nanobiotechnology, synthesizing metal nanoparticles (NPs) using plant extracts has recently been increasing because of eco-friendly and low-cost methods. For this work, zinc oxide nanoparticles (ZnO NPs) have been synthesized by biosynthesis process using water hyacinth extracts (WHE). The water hyacinth (WH) was chosen because the WH is fast-growing and the most toxic aquatic plant in the world. Therefore, this work aims to apply these WHE to be a precursor in the biosynthesis of ZnO NPs (ZnOBio-NPs) based on the research of a sustainable environment. The ZnO NPs synthesized by the WHE were investigated for their antibacterial and photocatalytic activities. …
Natural Wound Dressing Films Prepared From Acetylated Starch/Κ-Carrageenan Blend Incorporated With Mandelic Acid, Wimolsiri Sriphochai, Jutarat Prachayawarakorn
Natural Wound Dressing Films Prepared From Acetylated Starch/Κ-Carrageenan Blend Incorporated With Mandelic Acid, Wimolsiri Sriphochai, Jutarat Prachayawarakorn
Journal of Metals, Materials and Minerals
Due to several limitations of acetylated starch film for wound dressing applications such as low mechanical properties and no antibacterial activity, acetylated starch film was, therefore, modified by different contents of κ-carrageenan and mandelic acid. Infrared spectra confirmed the presence of κ-carrageenan and mandelic acid in the modified acetylated starch films. In addition, the decreased crystallinity of the carrageenan modified acetylated starch films led to more smooth film, as observed by scanning electron images. Besides, the addition of various amounts of κ-carrageenan in the modified acetylated starch films caused the improvement of mechanical properties, moisture uptake, water vapor transmission rate …
A Review On The Development Of Metals-Doped Vanadium Oxides For Zinc-Ion Battery, Kittima Lolupima, Jin Cao, Dongdong Zhang, Chenwu Yang, Xinyu Zhang, Jiaqian Qin
A Review On The Development Of Metals-Doped Vanadium Oxides For Zinc-Ion Battery, Kittima Lolupima, Jin Cao, Dongdong Zhang, Chenwu Yang, Xinyu Zhang, Jiaqian Qin
Journal of Metals, Materials and Minerals
Rechargeable zinc-ion batteries (ZIBs) are emerging as promising energy storage devices for various applications, including large-scale energy storage, due to their environmental friendliness, enhanced safety, and low cost. A key challenge in ZIB development is creating cathode materials that reduce the solubility of active materials in aqueous electrolytes, increase electrical conductivity, and extend life cycles for high performance. Vanadium-based compounds, with their diverse structures and multiple oxidation states (+2, +3, +4, and +5), have been extensively studied as effective cathodes for ZIBs. This mini review highlights recent research on doping transition metals into vanadium oxide materials to achieve superior electrochemical …
Comparative Studies Of Radio Transparency And Dielectric Characteristics Of Polymer Composites, Azira Yermakhanova, Aidar Kenzhegulov, Berdiyar Baiserikov, Мohammed Meiirbekov, Nurlan Boguspayev
Comparative Studies Of Radio Transparency And Dielectric Characteristics Of Polymer Composites, Azira Yermakhanova, Aidar Kenzhegulov, Berdiyar Baiserikov, Мohammed Meiirbekov, Nurlan Boguspayev
Journal of Metals, Materials and Minerals
Aramid-epoxy composites and glass fiber reinforced plastics are widely used in the manufacturing of the fairing design for modern aerospace vehicles due to their excellent mechanical properties combined with radio transparency in wave transfer. In this paper, aramid-epoxy composite and fiberglass were fabricated by the vacuum infusion method for a comparative study on radio transparency and dielectric characteristics. The radio transparency of the studied materials was evaluated by free-space measurements in the frequency range of 1 GHz to 8.5 GHz. According to the radio transparency results, the aramid-epoxy composite undergoes less electromagnetic wave loss than glass fiber reinforced plastic. Modifying …
Effect Of Hatch Spacing In Selective Laser Melting Process Of Ti-6al-4v Alloy On Finished Surface Roughness: A Computational Study, Reettiporn Thongpron, Patiparn Ninpetch, Prasert Chalermkarnnon, Pruet Kowitwarangkul
Effect Of Hatch Spacing In Selective Laser Melting Process Of Ti-6al-4v Alloy On Finished Surface Roughness: A Computational Study, Reettiporn Thongpron, Patiparn Ninpetch, Prasert Chalermkarnnon, Pruet Kowitwarangkul
Journal of Metals, Materials and Minerals
The Selective Laser Melting (SLM) process is a promising additive manufacturing technology for producing complex metal parts. However, this process has certain limitations, including lack of fusion and defects, which can hinder its industrial applications. These challenges can be addressed by determining the appropriate overlap percentage parameters. This study used numerical simulation to explore the effect of overlap percentage on multi-track melting in the SLM process for Ti-6Al-4V. The simulation results categorize the multi-track melting morphologies into two distinct groups. The first group, (0% to 40% overlap), displays consistent surface roughness with an average Ra value of 7 µm. In …
Use Of Commercial Synthetic Filament Waste To Reinforce Biobased Poly(Butylene Succinate) With The Aid Of Compatibilizers, Nattakarn Hongsriphan, Alongkorn Popanna
Use Of Commercial Synthetic Filament Waste To Reinforce Biobased Poly(Butylene Succinate) With The Aid Of Compatibilizers, Nattakarn Hongsriphan, Alongkorn Popanna
Journal of Metals, Materials and Minerals
Since poly(butylene succinate) (PBS) has low rigidity for engineering application, this research attempted to reinforce PBS with poly(ethylene terephthalate) (PET) and polyamide-6 (nylon6) filaments with the reservation of polymer toughness. Filaments were chopped to be short fibers (length of 2 mm to 4 mm) and melt compounded with PBS pellets in the weight ratio of 1 wt%, 5 wt%, and 7 wt% using a twin-screw extruder that the temperature profile was set high enough for melting only PBS matrix. Two types of compatibilizers; hexamethylene diisocyanate (HMDI) or hexamethylene diamine (HMDA) of 0.05 wt% were used to treat fiber surface. It …
Structural, Morphological, Magnetic, And Dielectric Properties Of Copper-Substituted Cuxzn(1-X)Fe2o4 Nanoparticles: Green Synthesis, Gavisiddaiah Harisha, Ramakrishnaiah Thejas, B. Venkatagiriyappa Padmini, Chinnappa Reddy Devaraja, Malalkere Veerappa Murugendrappa, Koppa Mahadevappa Rajashekara
Structural, Morphological, Magnetic, And Dielectric Properties Of Copper-Substituted Cuxzn(1-X)Fe2o4 Nanoparticles: Green Synthesis, Gavisiddaiah Harisha, Ramakrishnaiah Thejas, B. Venkatagiriyappa Padmini, Chinnappa Reddy Devaraja, Malalkere Veerappa Murugendrappa, Koppa Mahadevappa Rajashekara
Journal of Metals, Materials and Minerals
Structural, Magnetic, and Dielectric investigations on the “CuX Zn(1-X) Fe2O4” X with stoichiometry (X=0, 0.3, 0.5, 0.7, and 1) were synthesized by solution combustion method using Aloe Vera extraction. The X-ray diffraction method was utilized to characterize the as-synthesized Cu-Zn ferrites. The results indicated the presence of cubic spinel structure with Fd‒3 m space group, and absence of other contaminates. The lattice parameter was found to increase with the increase in Zinc concentration. The patterns of TEM confirm that the particle is within the nanometer range (35 nm to 50 nm). Magnetic properties investigated by vibrating sample magnetometry, reveal that …
Vibration Absorption Of As-Built And Post-Heat-Treated Ti-6al-4v Alloy Fabricated By Laser Powder Bed Fusion Additive Manufacturing, Masaaki Nakai, Kohei Nagaya, Kosuke Ueki, Hideki Kyogoku
Vibration Absorption Of As-Built And Post-Heat-Treated Ti-6al-4v Alloy Fabricated By Laser Powder Bed Fusion Additive Manufacturing, Masaaki Nakai, Kohei Nagaya, Kosuke Ueki, Hideki Kyogoku
Journal of Metals, Materials and Minerals
Vibration absorption of the Ti-6Al-4V alloy fabricated by laser powder bed fusion additive manufacturing (LPBF-AM) was evaluated following as-built and post-heat treatment (i.e., solution treatment followed by water quenching). The base plate was heated at 50°C or 200°C during building. Results showed that the vibration absorption of the as-built Ti-6Al-4V alloy was higher when the base plate was heated at 50°C than at 200°C. Further, the vibration absorption indicated strong anisotropy, with the highest vibration absorption in the direction perpendicular to the building direction and transverse to the laser scanning direction. However, after solution treatment followed by water quenching, the …
Zno Nanostructures Synthesized By One-Step Sol-Gel Process Using Different Zinc Precursors, Maneerat Songpanit, Kanokthip Boonyarattanakalin, Wisanu Pecharapa, Wanichaya Mekprasart
Zno Nanostructures Synthesized By One-Step Sol-Gel Process Using Different Zinc Precursors, Maneerat Songpanit, Kanokthip Boonyarattanakalin, Wisanu Pecharapa, Wanichaya Mekprasart
Journal of Metals, Materials and Minerals
Zinc oxide (ZnO) nanopowders have been widely applied in electronics, optics and photocatalytic applications depending on their morphological structure. In the bottom-up process, it is conceived that the different zinc precursors may result in different formations of ZnO nanostructures with exceptional morphology. This work focuses on ZnO material synthesized via the facile sol-gel synthesis using different zinc slat precursors, including zinc acetate, zinc nitrate, zinc sulphate, and zinc chloride. All zinc salt precursors were incorporated with sodium hydroxide and hexamethylenetetramine (HMTA) under mild thermal energy with consistent conditions to investigate ZnO formation. The as-prepared samples appeared in white powders with …
Development Of Forming Limit Diagrams For Motorcycle Fuel Tank Made From Aa5754-O Under Deep Drawing, Phiraphong Larpprasoetkun, Jidapa Leelaseat, Aeksuwat Nakwattanaset, Surasak Suranuntchai
Development Of Forming Limit Diagrams For Motorcycle Fuel Tank Made From Aa5754-O Under Deep Drawing, Phiraphong Larpprasoetkun, Jidapa Leelaseat, Aeksuwat Nakwattanaset, Surasak Suranuntchai
Journal of Metals, Materials and Minerals
The research studied forming limit curves (FLC) for aluminum alloy 5754-O (AA5754-O) and modified them using two methods. These methods aimed to create FLCs for application in describing the forming behavior of sheet metal material through a deep drawing process simulation in the PAM-STAMP program. The methods are as follows: The Nakajima test combined with a new method, a novel process for grid creation on the specimen: laser marking combined with elastic paints. A mathematical material model using the fracture model along with the yield criteria: YLD2000-2D and hardening law: Swift-Voce. The Keeler-Brazier modified equation was chosen as the fracture …
Investigating The Oxidation Behavior Of Mg-Zn Alloy: Effects Of Heating Rates, Gas Flow, Protective Atmosphere, And Alloy Composition, Tuğçe Nur Saraçoğlu, Safa Polat, Erkan Koç, Muwafaq Mashrah, Amir Najah Saud, Marta Michalska-Domańska
Investigating The Oxidation Behavior Of Mg-Zn Alloy: Effects Of Heating Rates, Gas Flow, Protective Atmosphere, And Alloy Composition, Tuğçe Nur Saraçoğlu, Safa Polat, Erkan Koç, Muwafaq Mashrah, Amir Najah Saud, Marta Michalska-Domańska
Journal of Metals, Materials and Minerals
Magnesium-zinc alloys offer promising lightweight properties but are prone to oxidation during high-temperature processing and usage. In this study, the oxidation behavior of Mg-Zn alloy was examined according to the inert gas type flow rate, heating rate and alloy amount. Initially, alloys were produced by adding zinc at weight percentages of 0.5%, 1.5%, and 2% using the casting method. The alloys were characterized using X-ray fluorescence (XRF), X-ray Diffraction (XRD), and scanning electron microscope (SEM) analyses, revealing the formation of dendritic Mg-Zn intermetallic within the alloy. The oxidation behavior of these alloys was examined via differential thermal analysis (DTA) and …
High-Performance No2 Gas Sensor Based On Reduced Graphene Oxide/Zro2 Hybrids, Ali Jabbar Fraih, N. Naeema, Fatima Fadhil Abbas
High-Performance No2 Gas Sensor Based On Reduced Graphene Oxide/Zro2 Hybrids, Ali Jabbar Fraih, N. Naeema, Fatima Fadhil Abbas
Journal of Metals, Materials and Minerals
The increasing concern over environmental pollution, particularly from nitrogen dioxide (NO2) emissions, necessitates the development of efficient NO2 detection sensors. This study introduces reduced graphene oxide (rGO)/ZrO2 hybrids for enhanced NO2 gas sensing. Utilizing a modified Hummer’s method, graphene oxide (GO) flakes were synthesized and subsequently sputtered with 10 nm ZrO2 film, followed by thermal annealing to produce rGO/ZrO2 hybrids. The hybrids were characterized using various techniques including SEM, TEM, AFM, Raman spectroscopy, and XRD, confirming successful synthesis and reduction of GO, as well as the formation of ZrO2 nanoparticles. Gas sensing tests revealed superior sensitivity to NO2 in the …
Phase Separation Promotes Fcc-Phase Mechanical Twinning In Alcocrfemo0.05ni2 High Entropy Alloy, Zifeng Zhang, Liang Chu, Jiqing Zhao, Bing Xu, Qilu Ye
Phase Separation Promotes Fcc-Phase Mechanical Twinning In Alcocrfemo0.05ni2 High Entropy Alloy, Zifeng Zhang, Liang Chu, Jiqing Zhao, Bing Xu, Qilu Ye
Journal of Metals, Materials and Minerals
The AlCoCrFeMo0.05Ni2 high entropy alloy (HEA) can remarkably enhance its ductility through high-temperature annealing. Nevertheless, the underlying mechanism remains under explored. Herein, we utilized molecular dynamics simulations (MD) to calculate the generalized stacking fault energy (GSFE) curves and uniaxial tensile behavior. Notably, the twin inclination of the FCC phase increases significantly after annealing. During plastic deformation, the FCC phase in the annealed alloy exhibits a substantially higher formation of twinning and stacking faults compared to the as-cast alloy. This increased twin inclination after annealing is the fundamental mechanism contributing to the enhancement of high-temperature ductility.
Recent Advances In Synthesis And Bio-Applications Of Natural Stabilizers For Metal Nanoparticles, Abhishek Sharma, Navneet Kaur, Ayashkanta Nanda, Manvinder Kaur, Rajeev Sharma, Harvinder Singh Sohal
Recent Advances In Synthesis And Bio-Applications Of Natural Stabilizers For Metal Nanoparticles, Abhishek Sharma, Navneet Kaur, Ayashkanta Nanda, Manvinder Kaur, Rajeev Sharma, Harvinder Singh Sohal
Journal of Metals, Materials and Minerals
Due to their exceptional physicochemical properties, the synthesis and application of metal nano-particles gained significant traction and a grip in industries and scientific fields or regions. However, the thermodynamic instability of metal nanoparticles poses or leads to challenges in their controlled synthesis and stabilization. To address this stability and the immobilization strategies, natural polymers such as cellulose, starch, alginate, chitosan, and hyaluronic acid have been explored for their non-toxic, biodegradable, and environmentally friendly characteristics. Recent advances in nanotechnology have led to an increased focus on these natural polymer’s utilization as effective stabilizers for diverse metal nanoparticles. This review comprehensively examines …
Influence Of Bi Substitution On Structural And Optical Properties Of Lafeo3 Perovskite, Mohammed Sadok Mahboub, Ouarda Ben Ali, Soria Zeroual, Ghani Rihia, Mourad Mimouni, Imad Hamadneh, Samir Bayou, Hani Boulahbel, Adel Benarfa, Ferhat Rehouma
Influence Of Bi Substitution On Structural And Optical Properties Of Lafeo3 Perovskite, Mohammed Sadok Mahboub, Ouarda Ben Ali, Soria Zeroual, Ghani Rihia, Mourad Mimouni, Imad Hamadneh, Samir Bayou, Hani Boulahbel, Adel Benarfa, Ferhat Rehouma
Journal of Metals, Materials and Minerals
The sol-gel self-ignition method has successfully synthesized a series of homogenous perovskites La1-xBixFeO3 (x=0.0, 0.2, 0.4, 0.6, and 0.8) nanoparticles. Rietveld refinement results from XRD patterns revealed no secondary phases in pure and Bi-substituted LaFeO3 samples. The structural transition from orthorhombic at x = 0.0 until x=0.6 (space group Pbnm) to rhombohedral at x=0.8 (space group R3c) was observed. Lattice parameter values increase slightly with Bi concentration due to the substitution of Bi in the LaFeO3 structure. The average crystallite size D was found to vary between 19 nm and 50 nm. The combination of XRD and SEM demonstrated that …
Nanostructure Of Tio2 And Wo3 Multilayer Films Deposited On Ito Glass For Electrochromic Enhanced Photocatalytic Activity, Atsakorn Chuenkruit, Watcharaporn Thongjoon, Kamon Aiempanakit, Montri Aiempanakit, Chantana Aiempanakit
Nanostructure Of Tio2 And Wo3 Multilayer Films Deposited On Ito Glass For Electrochromic Enhanced Photocatalytic Activity, Atsakorn Chuenkruit, Watcharaporn Thongjoon, Kamon Aiempanakit, Montri Aiempanakit, Chantana Aiempanakit
Journal of Metals, Materials and Minerals
The photocatalytic activity (PA) by electrochromic (EC) enhancement of single and multilayer films of TiO2, WO3, TiO2/WO3, and WO3/TiO2 was investigated. All films were deposited from metal on an ITO glass substrate using direct current (DC) magnetron sputtering via an oblique angle deposition (OAD) technique at 85°. Subsequently, a thermal oxidation (TO) process at 500℃ was applied for the samples to form metal oxide films. The morphology, elemental composition, crystal structure, and optical properties were studied by using field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffractometry (XRD), and UV-vis spectroscopy, respectively. The photocatalytic properties were investigated …
Surface Characteristics Evolution Of 316l Stainless Steel Induced By Tension Loading, Kanokwan Antanam, Surasak Kuimalee, Panya Buahombura, Waraporn Piyawit
Surface Characteristics Evolution Of 316l Stainless Steel Induced By Tension Loading, Kanokwan Antanam, Surasak Kuimalee, Panya Buahombura, Waraporn Piyawit
Journal of Metals, Materials and Minerals
316L stainless steel has been employed as a medical implant material owing to its advantageous biocompatibility and durability. The microstructure and surface characteristics of 316L play a crucial role in implant application. Diverse processing methods were utilized to modify the surface properties of 316L to customize the characteristics of medical devices. Mechanical deformation induces changes in the microstructure and causes changes in surface topography. In this study, we introduced deformation to 316L by applying uniaxial tension at strain values ranging from 2% to 25%. During sample preparation, electrochemical polishing was employed to eliminate the deformed layers generated by mechanical grinding. …
Sbr Elastomer Response To Renewable Diesel Blends: An Experimental Investigation, Andrias Rahman Wimada, Ni Putu Dian Nitamiwati, Fatimah Tresna Pratiwi, Maharanni Dewi Solikhah, Bina Restituta Barus, Eki Dwi Wijanarko, Riesta Anggarani, Lies Asiyah, Setyo Widodo, Arfi Thahar, Soni Solistia Wirawan
Sbr Elastomer Response To Renewable Diesel Blends: An Experimental Investigation, Andrias Rahman Wimada, Ni Putu Dian Nitamiwati, Fatimah Tresna Pratiwi, Maharanni Dewi Solikhah, Bina Restituta Barus, Eki Dwi Wijanarko, Riesta Anggarani, Lies Asiyah, Setyo Widodo, Arfi Thahar, Soni Solistia Wirawan
Journal of Metals, Materials and Minerals
To investigate the impact of Styrene Butadiene Rubber (SBR) exposure to renewable fuels during handling and storage processes, compatibility tests were conducted on three different renewable fuel mixtures: 30% biodiesel, 40% biodiesel, and 30% biodiesel + 10% hydrogenated vegetable oil. These tests involved static immersion experiments conducted at room temperature for a duration of 1000 h, following the ASTM D471 standards. Before and after the immersion tests, the physical properties and visually assessed elastomers concentrations were investigated by varying the SBR content. Additionally, the post-immersion fuel properties were examined. The results showed that mass and volume swelling increased with the …
Bifunctional Cationic Modification Of Modal Fabric For Sustainable In Textile Dyeing With Spent Coffee Grounds, Monthon Nakpathom, Rattanaphol Mongkholrattanasit, Sarute Ummartyotin, Pisutsaran Chitichotpanya, Nattaya Vuthiganond
Bifunctional Cationic Modification Of Modal Fabric For Sustainable In Textile Dyeing With Spent Coffee Grounds, Monthon Nakpathom, Rattanaphol Mongkholrattanasit, Sarute Ummartyotin, Pisutsaran Chitichotpanya, Nattaya Vuthiganond
Journal of Metals, Materials and Minerals
In order to dye cellulose or regenerated cellulose with natural dyes, toxic metal mordants are generally employed. In response to this issue, the novel bifunctional cationic agent was pretreated to modify modal (regenerated cellulose) fabric prior to dyeing to enhance the fiber-dye affinity. The cationization reaction was carried out using a compound containing bicationic sites, N,N'-(oxybis (ethane-2,1-diyl))bis(3-chloro-2-hydroxy-N,N-dimethylpropan-1-aminium. This unique cationic agent is capable of producing nonvolatile amine and has no odor problem. The successful cationic modification was confirmed through FTIR spectroscopy and zeta potential measurement. The cationized process was optimized at a cationic and sodium hydroxide concentration …
Designing Biphasic Nanocellulose Hydrogels To Mimic The Complex Cartilage-Bone Interface, Sairash Sairash, Sirinee Jirajessada, Supansa Yodmuang
Designing Biphasic Nanocellulose Hydrogels To Mimic The Complex Cartilage-Bone Interface, Sairash Sairash, Sirinee Jirajessada, Supansa Yodmuang
Journal of Metals, Materials and Minerals
Osteochondral lesions, which affect both the cartilage and the bone, present significant challenges in treatment due to the complex mechanical and biochemical properties of these tissues. A crucial consideration in developing tissue replacements for these lesions is the simultaneous regeneration of cartilage and calcified cartilage, which forms the transition zone to bone. Our current study aims to fabricate a bilayer polymeric hydrogel designed not only to support cartilage regeneration but also to serve as an interface between cartilage and bone. The bilayer hydrogel was created by combining oxidized bacterial nanocellulose, gelatin, and alginate in one layer, while the other layer …
The Impact Of Hot Rolling, Zn And Sn On The Mechanical And Corrosion Characteristics Of Mg-Zn-Ca Alloys, Halil Eren, Ali Güngör, Erkan Koç, Harun Çuğ
The Impact Of Hot Rolling, Zn And Sn On The Mechanical And Corrosion Characteristics Of Mg-Zn-Ca Alloys, Halil Eren, Ali Güngör, Erkan Koç, Harun Çuğ
Journal of Metals, Materials and Minerals
In this study, it was aimed to develop a biodegradable metallic plate that is an alternative to bioinert metal plates. The main advantage of using biodegradable materials for implants is that they can be gradually replaced with the patient's own tissue, which reduces the need for additional surgeries to remove the implant after it has served its purpose. Magnesium and its alloys can provide biocompatibility as orthopedic implant materials. Mg-Zn-Ca and Mg-Zn-Ca-Sn alloys were prepared using the gravity die casting method. Zn (1.0 wt% and 2.0 wt%) and Sn (0.0 wt%, 0.5 wt% and 1.0 wt%) ratios were used as …
Nutrient Retention And Availability Of Biochars Prepared By Co-Pyrolysis Of Vinasse With Sugarcane Filter Cake, Siraprapra Suwanree, Jesper T.N. Knijnenburg, Emirhan M. Ölҫer, Kaewta Jetsrisuparb
Nutrient Retention And Availability Of Biochars Prepared By Co-Pyrolysis Of Vinasse With Sugarcane Filter Cake, Siraprapra Suwanree, Jesper T.N. Knijnenburg, Emirhan M. Ölҫer, Kaewta Jetsrisuparb
Journal of Metals, Materials and Minerals
The disposal of vinasse, a nutrient-rich by-product of ethanol production, is challenging because of the low pH and emissions of harmful gases and smells. Here, biochars were produced by pyrolysis of mixtures of filter cake and vinasse (0.25 w/v to 1 w/v) at 550℃. The effects of filter cake to vinasse ratios on the biochar yield, pH, ash content, total nutrient (P, K, Ca, and Mg) content, and nutrient availability were investigated. Increasing the filter cake to vinasse ratio increased the biochar yield and ash content and lowered the biochar pH from 10.3 for 0.25-BC to 8.2 for filter cake …