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Permanent link (DOI): https://doi.org/10.7939/R3Q626

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Wear behavior of flame sprayed nanostructured titania coatings Open Access

Descriptions

Other title
Subject/Keyword
Titania
Coating
Wear
Flame spray
Nano
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Pourjavad, Navid
Supervisor and department
McDonald, Andre (Mechanical Engineering)
Examining committee member and department
Fisher, Gary (Alberta Research Council)
Gerlich, Adrian (Chemical and materials Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2011-07-27T18:38:46Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
Various pressures of compressed air were introduced into the flame spraying torch and the protective coatings of nanostructured and conventional titania (TiO2) were deposited on low carbon steel substrates. Performance of the coatings was studied using scanning electron microscopy (SEM), hardness measurement, porosity measurement and the best coating was selected for further analyses. A Nanostructured and conventional samples were exposed to ASTM G65 and C633 standard tests and the outcome was analyzed using confocal and electron microscopy. A nanostructured coating was found to outperform the conventional counterpart due to the presence of a bimodal microstructure, which increases the plastic deformation and crack resistance of the ceramic. The nanostructured coating was analyzed using X-Ray diffraction (XRD) and eventually its crack propagation resistance was quantified. The coating was also tested in a highly corrosive H2S environment and Energy-dispersive X-ray spectroscopy (EDX) verified its fair resistance against that environment.
Language
English
DOI
doi:10.7939/R3Q626
Rights
License granted by Navid Pourjavad (pourjava@ualberta.ca) on 2011-07-26T04:40:24Z (GMT): 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 the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein 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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