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Permanent link (DOI): https://doi.org/10.7939/R3K35MN7D

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Friction Stir Processing (FSP) of Thermal-sprayed Tungsten Carbide-Nickel (WC-Ni) MMC Coating Open Access

Descriptions

Other title
Subject/Keyword
Cold spraying
Friction stir processing
Tungsten carbide
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Narulkar, Vinayak Vasudeo
Supervisor and department
McDonald, Andre (Department of Mechanical Engineering)
Examining committee member and department
Ayranci, Cagri (Department of Mechanical Engineering)
Gerlich,Adrian (Mechanical and Mechatronics Engineering, University of Waterloo)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2013-09-30T13:24:46Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
Tungsten carbide-Nickel (WC-Ni) metal matrix coating with fixed powder composition was deposited using low pressure cold gas dynamic spraying (LPCGDS) and High velocity oxy-fuel (HVOF) spraying. These coatings were subsequently treated with friction stir processing (FSP) as post-deposition heat treatment. The non-FSP and FSP-treated cold-sprayed and HVOF-sprayed WC-Ni MMC coatings were wear test using the standard ASTM G65 dry abrasion test. The aim of this thesis was to investigate the effect of FSP treatment on improvement in wear performance of WC-Ni MMC coating. The results displayed that FSP treatment showed homogeneity and uniformity in microstructure which ensued to improved wear resistance, hardness and toughness of the coating. Scanning electron microscope (SEM) analysis was conducted on the wear-tested samples showed change in wear mechanism from delaminated sheet wear to indentation and scratching due to improved coating toughness.
Language
English
DOI
doi:10.7939/R3K35MN7D
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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