Date of Award
2015
Publication Type
Master Thesis
Degree Name
M.A.Sc.
Department
Mechanical, Automotive, and Materials Engineering
First Advisor
Reza Riahi
Second Advisor
Afsaneh Edrisy
Keywords
AlTiN, CrN, interface, material transfer, Ti-6Al-4V, TiN
Rights
info:eu-repo/semantics/openAccess
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Abstract
The adhesion mechanisms of titanium alloy Ti-6Al-4V to AISI 52100 steel and AlTiN, TiN and CrN nitride coating were studied. It was found that the transferred Ti-6Al-4V had a layered amorphous structure in which nanocrystalline and polycrystalline oxides were embedded. High resolution TEM (HRTEM), electron diffraction, and fast Fourier transform (FFT) investigations revealed the presence of nanocrystalline TiO (C2/m) at the steel/transfer layer and AlTiN/transfer layer interface. However only α-titanium (P63/mmc) was detected at the TiN/transfer layer interface and CrN/transfer layer. This observation explains that the coefficient of friction between TiN and Ti-6Al-4V as well as CrN and Ti-6Al-4V reached the threshold value within shorter distance. The different adhesion behavior of Ti-6Al-4V to different counterface materials can be related to low misfit between α-titanium and TiN and CrN crystals.
Recommended Citation
Jin, Liang, "Adhesion mechanisms of Ti-6Al-4V to PVD coatings" (2015). Electronic Theses and Dissertations. 5705.
https://scholar.uwindsor.ca/etd/5705