Tribological Performance And Scuffing Behaviors Of Several Automobile Piston Rings Mating With Chrome-Plated Cylinder Liner,
2022
Department of Materials Science and Engineering, Dalian Maritime University, Dalian 116026, China
Tribological Performance And Scuffing Behaviors Of Several Automobile Piston Rings Mating With Chrome-Plated Cylinder Liner, Zeyu Ma, Ruoxuan Huang, Xiaoshuai Yuan, Yan Shen, Jiujun Xu
Friction
The friction and wear properties, as well as the scuffing resistance, of different piston-ring coatings mating with a chrome-plated cylinder liner were investigated. Interrupted wear tests under the lubricant starvation condition were conducted to examine the wear behavior of Cr-diamond coating (GDC) and diamond-like coating (DLC). The results indicated that the DLC coating had outstanding tribological properties (small coefficient of friction and wear loss) at 150 °C, while the GDC coating exhibited better performance at an elevated temperature (240 °C). The DLC coating had a better scuffing resistance; no material adhesion occurred for 70 min under the unlubricated condition. The …
Load Dependent Microstructural Evolution In An As-Cast 26% Cr High Chromium Cast Iron During Unlubricated Sliding,
2022
Department of Materials Science, Saarland University, Saarbrücken 66123, Germany
Load Dependent Microstructural Evolution In An As-Cast 26% Cr High Chromium Cast Iron During Unlubricated Sliding, U. Pranav Nayak, Sebastian Suárez, Valentin Pesnel, Frank Mücklich, María Agustina Guitar
Friction
In the current study, an as-cast 26% Cr high chromium cast iron (HCCI) alloy was subjected to dry-sliding linear wear tests, under different loads. The loads were selected based on analytically computing the critical load (PC) i.e., the load necessary to induce plastic deformation. The PC was calculated to be 15 N and accordingly, a sub-critical load (5 N) and an over-critical load (20 N) were chosen. The influence of increasing the load during the wear test was investigated in terms of the matrix microstructural behaviour and its ability to support the surrounding carbides. The morphological aspects …
Motion And Crosslinked Polyethylene Wear In Reverse Total Shoulder Arthroplasty,
2022
The University of Western Ontario
Motion And Crosslinked Polyethylene Wear In Reverse Total Shoulder Arthroplasty, Christopher Millward
Electronic Thesis and Dissertation Repository
The reverse total shoulder arthroplasty (RTSA) has quickly grown to become the most commonly used shoulder arthroplasty design; however, reports have shown evidence of RTSA failures related to polyethylene wear and damage. Therefore, the present work investigated the wear of crosslinked polyethylene (XLPE) in environments similar to that of an in vivo RTSA. Additionally, a computational model was developed based on a previous study of the shoulder motions obtained from a selection of typical patients with RTSA. This model quantified the amount of glenohumeral motion that an RTSA may be subjected to in vivo and provided an approximate value for …
Water Lubrication Of Graphene Oxide-Based Materials,
2022
Laboratory for Advanced Lubricating Materials, Shanghai Advanced Research Institute, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 201210, China;School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
Water Lubrication Of Graphene Oxide-Based Materials, Shaoqing Xue, Hanglin Li, Yumei Guo, Baohua Zhang, Jiusheng Li, Xiangqiong Zeng
Friction
Water is as an economic, eco-friendly, and efficient lubricant that has gained widespread attention for manufacturing. Using graphene oxide (GO)-based materials can improve the lubricant efficacy of water lubrication due to their outstanding mechanical properties, water dispersibility, and broad application scenarios. In this review, we offer a brief introduction about the background of water lubrication and GO. Subsequently, the synthesis, structure, and lubrication theory of GO are analyzed. Particular attention is focused on the relationship between pH, concentration, and lubrication efficacy when discussing the tribology behaviors of pristine GO. By compounding or reacting GO with various modifiers, amounts of GO-composites …
Mechanochemical Reactions Of Gan–Al2O3 Interface At The Nanoasperity Contact: Roles Of Crystallographic Polarity And Ambient Humidity,
2022
School of Mechanical Engineering, University of South China, Hengyang 421001, China
Mechanochemical Reactions Of Gan–Al2O3 Interface At The Nanoasperity Contact: Roles Of Crystallographic Polarity And Ambient Humidity, Jian Guo, Jian Gao, Chen Xiao, Lei Chen, Linmao Qian
Friction
Mechanochemical reactions of the GaN–Al2O3 interface offer a novel principle for scientific and technological merits in the micro-/nano-scale ultra-precision surface machining. In this work, the mechanochemical reactions on Ga- and N-faced GaN surfaces rubbed by the Al2O3 nanoasperity as a function of the environmental humidity were investigated. Experimental results indicate that the N-face exhibits much stronger mechanochemical removal over the relative humidity range of 20%–80% than the Ga-face. Increasing water molecules in environmental conditions significantly promotes the interfacial mechanochemical reactions and hence accelerates the atomic attrition on N-face. The hypothesized mechanism of the selective …
Capillary Electroosmosis Properties Of Water Lubricants With Different Electroosmotic Additives Under A Steel-On-Steel Sliding Interface,
2022
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology, Ministry of Education & Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
Capillary Electroosmosis Properties Of Water Lubricants With Different Electroosmotic Additives Under A Steel-On-Steel Sliding Interface, Bohua Feng, Zhiqiang Luan, Tao Zhang, Jiawei Liu, Xiaodong Hu, Jiju Guan, Xuefeng Xu
Friction
The process of lubricant penetration into frictional interfaces has not been fully established, hence compromising their tribological performance. In this study, the penetration characteristics of deionized water (DI water) containing an electroosmotic suppressant (cetyltrimethylammonium bromide (CTAB)) and an electroosmotic promoter (sodium lauriminodipropionate (SLI)), were investigated using steel-on-steel friction pairs. The results indicated that the lubricant with electroosmotic promoter reduced the coefficient of friction and wear scar diameter, whereas that with an electroosmotic suppressant exhibited an opposite behavior compared with DI water. The addition of SLI promoted the penetration of the DI water solution, thus resulting in the formation of a …
Influence Of The Cage On The Migration And Distribution Of Lubricating Oil Inside A Ball Bearing,
2022
School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Influence Of The Cage On The Migration And Distribution Of Lubricating Oil Inside A Ball Bearing, He Liang, Yu Zhang, Wenzhong Wang
Friction
The migration and distribution of lubricant oil in a rolling bearing strongly affect the elastohydrodynamic lubrication performance between the balls and rings. However, oil re-lubrication is highly dependent on the bearing design, which is different from the ball-on-disc model. This study directly observed the distribution of the lubricant film in a custom-made model-bearing rig, with an outer ring replaced by a glass ring to allow full optical access. The influence of the cage type and surface properties were presented. The physical origin of the re-lubrication mechanism, including capillary flow and mechanical redistribution, was discussed.
Constructing A Biomimetic Robust Bi-Layered Hydrophilic Lubrication Coating On Surface Of Silicone Elastomer,
2022
School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China;Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Constructing A Biomimetic Robust Bi-Layered Hydrophilic Lubrication Coating On Surface Of Silicone Elastomer, Luyao Gao, Xiaoduo Zhao, Shuanhong Ma, Zhengfeng Ma, Meirong Cai, Yong-Min Liang, Feng Zhou
Friction
Silicone elastomers-based materials have been extensively involved in the field of biomedical devices, while their use is extremely restricted due to the poor surface lubricity and inherent hydrophobicity. This paper describes a novel strategy for generating a robust layered soft matter lubrication coating on the surface of the polydimethylsiloxane (PDMS) silicone elastomer, by entangling thick polyzwitterionic polyelectrolyte brush of poly (sulfobetaine methacrylate) (PSBMA) into the sub-surface of the initiator-embedded stiff hydrogel coating layer of P(AAm-co-AA-co-HEMA–Br)/Fe, to achieve a unified low friction and high load-bearing properties. Meanwhile, the stiff hydrogel layer with controllable thickness is covalently anchored on the surface of …
Effects Of Annealing Treatment On Tribological Behavior Of Tungsten-Doped Diamond-Like Carbon Film Under Lubrication (Part 2): Tribological Behavior Under Modtc Lubrication,
2022
School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China
Effects Of Annealing Treatment On Tribological Behavior Of Tungsten-Doped Diamond-Like Carbon Film Under Lubrication (Part 2): Tribological Behavior Under Modtc Lubrication, Shaojun Zhang, Lina Zhu, Yanyan Wang, Jiajie Kang, Haidou Wang, Guozheng Ma, Haipeng Huang, Guang’An Zhang, Wen Yue
Friction
Molybdenum dialkyldithiocarbamate (MoDTC) is widely used as a friction modifier in engine lubricating oil. Under MoDTC lubrication, the friction and wear behaviors of tungsten-doped diamond-like carbon (W-DLC) films annealed at 100–400 °C were discussed and evaluated using scanning electron microscopy (SEM), atomic force microscopy (AFM), and Raman spectroscopy. Under (polymerized alpha olefin) PAO + MoDTC lubrication, the coefficient of friction of all samples decreased, but the wear rates of the W-DLC films annealed at 300 °C increased significantly. By interacting with zinc dialkyldithiophosphate (ZDDP), the wear rates of W-DLC films annealed at different temperatures declined significantly owing to the formation …
Photorheological Fluids Of Azobenzene Polymers For Lubrication Regulation,
2022
State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
Photorheological Fluids Of Azobenzene Polymers For Lubrication Regulation, Shuangxi Tang, Shayu Li, Liran Ma, Yu Tian
Friction
Fluid viscosity is ubiquitous property and is of practical importance in intelligent fluids, industrial lubrication, and pipeline fluid transportation. Recently, there has been a surging interest in viscosity regulation. Here, we have developed a group of photorheological fluids by utilizing azobenzene polymers with a light-induced microstructure transformation. In this work, a photosensitive polymer with 4,4'-bis-hydroxyazobenzene as the main chain was designed and synthesized as a pivotal functional material. The sufficiently large structural difference under ultraviolet and near-infrared light makes it possible to regulate the viscosity of a polyethylene glycol solution. The viscosity of the photosensitive rheological fluids under ultraviolet light …
Effects Of Groove-Textured Surfaces Filled With Sn–Ag–Cu And Mxene–Ti3C2 Composite Lubricants On Tribological Properties Of Css-42l Bearing Steel,
2022
School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China;Shenzhen Research Institute of Wuhan University of Technology, Shenzhen 518000, China
Effects Of Groove-Textured Surfaces Filled With Sn–Ag–Cu And Mxene–Ti3C2 Composite Lubricants On Tribological Properties Of Css-42l Bearing Steel, Yawen Xue, Chaohua Wu, Xiaoliang Shi, Qipeng Huang, Ahmed Mohamed Mahmoud Ibrahim
Friction
To improve the tribological performance of CSS-42L bearing steel, smooth surfaces (SSs), groove-textured surfaces (GSs), GSs with Sn–Ag–Cu (GSs–SAC), and GSs with Sn–Ag–Cu–Ti3C2 (GSs–SACT) were prepared on CSS-42L. In addition, experimental studies were conducted on tribological properties. The obtained results indicated that GSs–SACT exhibited the best anti-friction and noise reduction performances. These remarkable tribological performances were attributed to the synergistic effects of grooves, Sn–Ag–Cu, and MXene–Ti3C2. The inconsistent rules of frictional forces were improved by the grooves and SACT, which inhibit the friction-induced noise. The micro-nano size-effects of MXene–Ti3C2 enhanced …
One-Step Method To Enhance Biotribological Properties And Biocompatibility Of Dlc Coating By Ion Beam Irradiation,
2022
Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
One-Step Method To Enhance Biotribological Properties And Biocompatibility Of Dlc Coating By Ion Beam Irradiation, Yuzhen Liu, Kelun Zhang, Jae-Ho Han, Youn-Hoo Hwang, Shusheng Xu, Dae-Eun Kim
Friction
A one-step method was developed to create a highly biocompatible micropatterned surface on a diamond-like carbon (DLC) through irradiation with a nitrogen ion beam and thus enhance the biocompatibility of osseointegrated surfaces and biotribological performance of articular surfaces. The biocompatibility and biotribological mechanisms were analyzed in terms of the structure and morphology of DLC. It was demonstrated that a layer enriched in sp3 C–N bonds was formed on the surface of the DLC after nitrogen ion beam irradiation. Moreover, with an increase in the radiation dose, the content of sp3 C–N on the DLC surface increased significantly, and …
Flammable Gases Produced By Tio2 Nanoparticles Under Magnetic Stirring In Water,
2022
School of Physics and Technology, Wuhan University, Wuhan 430072, China
Flammable Gases Produced By Tio2 Nanoparticles Under Magnetic Stirring In Water, Pengcheng Li, Chongyang Tang, Xiangheng Xiao, Yanmin Jia, Wanping Chen
Friction
The friction between nanomaterials and Teflon magnetic stirring rods has recently drawn much attention for its role in dye degradation by magnetic stirring in dark. Presently the friction between TiO2 nanoparticles and magnetic stirring rods in water has been deliberately enhanced and explored. As much as 1.00 g TiO2 nanoparticles were dispersed in 50 mL water in 100 mL quartz glass reactor, which got gas-closed with about 50 mL air and a Teflon magnetic stirring rod in it. The suspension in the reactor was magnetically stirred in dark. Flammable gases of 22.00 ppm CO, 2.45 ppm CH4 …
Retracted Article: Thermal, Mechanical, And Tribological Properties Of Sodium-Montmorillonite-Nanoparticle-Reinforced Polyethersulfone And Polytetrafluoroethylene Ternary Composites,
2022
Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300384, China;National Demonstration Center for Experimental Mechanical and Electrical Engineering Education, Tianjin University of Technology, Tianjin 300384, China;College of Mechanical Engineering, Tianjin University of Technology, Tianjin 300384, China
Retracted Article: Thermal, Mechanical, And Tribological Properties Of Sodium-Montmorillonite-Nanoparticle-Reinforced Polyethersulfone And Polytetrafluoroethylene Ternary Composites, Shicheng Yan, Yahong Xue, Yahui Hu, Shoujun Wang
Friction
No abstract provided.
Erratum To: Study On Contact Fatigue Of A Wind Turbine Gear Pair Considering Surface Roughness,
2022
State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400030, China
Erratum To: Study On Contact Fatigue Of A Wind Turbine Gear Pair Considering Surface Roughness, Heli Liu, Huaiju Liu, Caichao Zhu, Zhangdong Sun, Houyi Bai
Friction
No abstract provided.
Retracted Article: Structural And Contact Analysis Of A Three-Dimensional Disc–Pad Model With And Without Thermal Effects,
2022
Faculty of Mechanical Engineering, University of Sciences and the Technology of Oran, L.P 1505 El - MNAOUER, USTO 31000 ORAN, Algeria
Retracted Article: Structural And Contact Analysis Of A Three-Dimensional Disc–Pad Model With And Without Thermal Effects, Ali Belhocine, Mesut Duzgun, Nouby Mahdi Ghazaly, Oday Ibraheem. Abdullah
Friction
No abstract provided.
Incipient Sliding Of Adhesive Contacts,
2022
Department of Industrial Engineering, University of Padova, Padua I-35131, Italy
Incipient Sliding Of Adhesive Contacts, Francesc Pérez-Ràfols, Lucia Nicola
Friction
A model is proposed herein to investigate the incipient sliding of contacts in the presence of both friction and adhesion, where the interfacial response is modeled based on traction-separation laws. A Maugis-like parameter is defined to characterize the response in the tangential direction. Subsequently, the model is used to investigate the contact between a smooth cylinder and a flat body, where adhesion-friction interactions are strong. A range of behaviors are observed when a tangential displacement is imposed: When the parameter is low, the contact pressure exhibits a relatively constant profile; when it is high, a pressure spike is observed at …
Effect Of Wear Debris On Fretting Fatigue Crack Initiation,
2022
Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Construction & Systems, Faculty of Engineering and Architecture, Ghent University, Ghent 9052, Belgium
Effect Of Wear Debris On Fretting Fatigue Crack Initiation, Shengjie Wang, Tongyan Yue, Dagang Wang, Magd Abdel Wahab
Friction
Both wear and fatigue occur in fretting condition, and they interact with one another during the whole process. Fretting fatigue is commonly analysed without considering the effect of wear in partial slip regime, although wear affects the lifetime of crack initiation. This paper investigates, for the first time, the effect of wear debris on fretting fatigue crack initiation. To investigate the effect of debris, first fretting wear characteristics in partial slip regime are analysed for loading conditions. Then, the effect of wear on fretting fatigue crack initiation is investigated using Ruiz parameters and critical plane methods without considering the debris …
Nano-Enhanced Biolubricant In Sustainable Manufacturing: From Processability To Mechanisms,
2022
School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, China
Nano-Enhanced Biolubricant In Sustainable Manufacturing: From Processability To Mechanisms, Yanbin Zhang, Hao Nan Li, Changhe Li, Chuanzhen Huang, Hafiz Muhammad Ali, Xuefeng Xu, Cong Mao, Wenfeng Ding, Xin Cui, Min Yang, Tianbiao Yu, Muhammad Jamil, Munish Kumar Gupta, Dongzhou Jia, Zafar Said
Friction
To eliminate the negative effect of traditional metal-working fluids and achieve sustainable manufacturing, the usage of nano-enhanced biolubricant (NEBL) is widely researched in minimum quantify lubrication (MQL) machining. It’s improved tool wear and surface integrity have been preliminarily verified by experimental studies. The previous review papers also concluded the major influencing factors of processability including nano-enhancer and lubricant types, NEBL concentration, micro droplet size, and so on. Nevertheless, the complex action of NEBL, from preparation, atomization, infiltration to heat transfer and anti-friction, is indistinct which limits preparation of process specifications and popularity in factories. Especially in the complex machining process, …
Water-Based Lubrication Of Niobium Nitride,
2022
State Key Laboratory of Superhard Materials, Department of Materials Science, Key Laboratory of Automobile Materials, MOE, Jilin University, Changchun 130012, China
Water-Based Lubrication Of Niobium Nitride, Kaifei Miao, Jia Wang, Qiang Zhao, Kaiwen Wang, Mao Wen, Kan Zhang
Friction
Water-based lubrication has attracted wide attention as an oil-free lubrication method owing to its greener and cleaner lubrication means. However, due to operating in the water environment, most moving parts would inevitably suffer from abrasion, rusting, and aging problems. Developing a novel solid-water composite system with ultra-low friction and wear will open new possibilities for innovative lubrication material research and development. Here, we first revealed the water-based lubrication behavior of a high-hardness niobium nitride coating (NbN). In a three-phase contact environment (water, air, and NbN), oxidation and hydrolytic reactions of NbN result in the formation of "colloidal solutions", containing Nb …
