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Permanent link (DOI): https://doi.org/10.7939/R3251FW9Z

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Dependence of Wear and Corrosion Properties on the Electron Work Function Open Access

Descriptions

Other title
Subject/Keyword
wear
corrosion
Electron Work Function
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Huang, Xiaochen
Supervisor and department
Li, Dongyang (Chemical and Materials Engineering)
Examining committee member and department
Eadie, Reginald (Chemical and Materials Engineering)
Li, Dongyang (Chemical and Materials Engineering)
Luo, Jingli (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Materials Engineering
Date accepted
2015-09-21T14:00:30Z
Graduation date
2015-11
Degree
Master of Science
Degree level
Master's
Abstract
Mechanical, tribological and corrosion properties of metallic materials are of significance to their industrial applications and have been studied for long time. Efforts are continuously made to correlate these properties to more fundamental parameters in order to effectively improve the materials. Electron work function (EWF) is a fundamental property of metals which characterizes their electron behavior and can be experimentally obtained with ease. This simple but fundamental parameter reflects the difficulty of changing the electronic state, which can be related to material’s performance in wear and corrosion. In this study, attempts were made to establish relationships among EWF, mechanical and tribological properties and corrosion behaviors. The dependence of mettalic material’s wear resistance was also investigated via EWF. Higher EWF corresponds to higher Young’s modulus and hardness, more stable electronic state, and thus the better performance in solid-particle erosion, slurry erosion and acid-medium corrosion tests. In sliding wear and neutral-medium corrosion tests, this correlation between EWF and material’s performance was concealed due to the influence of oxdiation. Using the relationship between EWF and temperature, further erosion tests at elevated temperature made it possible to predict metallic material’s wear resistance via EWF.
Language
English
DOI
doi:10.7939/R3251FW9Z
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. 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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