M.S. (Master of Science)
Department of Mechanical Engineering
The promise of nanocomposites lies in their multifunctionality, the possibility of realizing unique combinations of properties which are not attainable in traditional materials. Metal ceramic nanocomposite is one such unique combination which is becoming increasingly popular among researchers today. The idea is to combine the superior properties of ceramics like hardness and strength with favorable properties of metal such as ductility. Materials with these characteristics have potential for engineering applications such as highly efficient gas turbines, aerospace materials, automobiles, protective coatings, etc. This study focuses on the indentation and scratch performance of metal-ceramic nanolaminates. Molecular dynamics atomistic simulations were performed to study the scratch behavior of different models of Niobium Carbide (NbC) - Niobium (Nb) nanolaminates. The layer thicknesses were varied and the coefficient of friction was calculated for all the models. The prevailing deformation mechanisms with varying layer thicknesses were studied. The results demonstrate how the change in the layer thickness of metal along with the change in indenter size affects the scratch behavior of the multilayer model.
Rasheed, Adnan, "Atomic simulation of scratch behavior of ceramic-metal nanolaminates" (2017). Graduate Research Theses & Dissertations. 1561.
Northern Illinois University
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Advisors: Iman Salehinia.||Committee members: Rao Kilaparti; John Shelton.||Includes illustrations.||Includes bibliographical references.