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Xps Study Of Calcium Lanthanum Sulfide Ceramics, Brian E. Butkus
Xps Study Of Calcium Lanthanum Sulfide Ceramics, Brian E. Butkus
Graduate Thesis and Dissertation 2023-2024
Long wave infrared (LWIR) optics that transmit in the 8 to 14 m wavelength range and, additionally, can withstand severe physical and thermal stresses are needed for advanced remote sensing, guidance and communication-based applications. However, most non-oxide transparent LWIR optics do not have the wider transmission range, nor the hardness and resistance to thermal shock needed for extreme environments. Because of these limitations, research is circling back to a promising material, calcium lanthanum sulfide (CLS), that could meet LWIR needs for extreme environments.
In this thesis, we will demonstrate the abilities of x-ray photoelectron spectroscopy (XPS) as a technique for …
Functionalization Of 1d And 2d Nanostructures And Their Applications, Yuen Yee Li Sip
Functionalization Of 1d And 2d Nanostructures And Their Applications, Yuen Yee Li Sip
Graduate Thesis and Dissertation 2023-2024
Material discovery and development has been playing a significant role in shaping human civilizations, by studying and improving materials for appealing observations to aid in our survival as well as to satisfy our curiosity. From the common earthly materials that give us strong building structures and hunting weapons to the Silicon Age that contributes to the creation of modern electronics and computers, the development of novel and enhanced materials continues to grow. Recently, a new field has emerged that is rapidly expanding the engineering circle; these are called nanomaterials. By shrinking bulk materials into structures with nanoscale dimensions, there is …
Laser Powder Bed Fusion Of Bimetallic Structures, Asif Mahmud
Laser Powder Bed Fusion Of Bimetallic Structures, Asif Mahmud
Graduate Thesis and Dissertation 2023-2024
Laser powder bed fusion (LPBF) is a popular additive manufacturing (AM) technique that has demonstrated the capability to produce sophisticated engineering components. This work reports the crack-free fabrication of an SS316L/IN718 bimetallic structure via LPBF, along with compositional redistribution, phase transformations and microstructural development, and nanohardness variations. Constituent intermixing after LPBF was quantitatively estimated using thermo-kinetic coefficients of mass transport and compared with the diffusivity of Ni in the austenitic Fe-Ni system. The intermixing of primary solvents (Ni and Fe) in SS316L/IN718 bimetallic structures was observed for an intermixing zone of approximately 800 µm, and their intermixing coefficient was estimated …