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https://hdl.handle.net/2440/75778
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Type: | Journal article |
Title: | Corrosion behaviour of nanocomposite TiSiN coatings on steel substrates |
Author: | Ahmed, M. Munroe, P. Jiang, Z. Zhao, X. Rickard, W. Zhou, Z. Li, L. Xie, Z. |
Citation: | Corrosion Science, 2011; 53(11):3678-3687 |
Publisher: | Pergamon-Elsevier Science Ltd |
Issue Date: | 2011 |
ISSN: | 0010-938X 1879-0496 |
Statement of Responsibility: | Mohammad Shoeb Ahmed, Paul Munroe, Zhong-Tao Jiang, Xiaoli Zhao, William Rickard, Zhi-feng Zhou, Lawrence Kwok Yan Li, Zonghan Xie |
Abstract: | Nanocomposite TiSiN coatings were deposited on tool steels. Detailed mechanisms that govern the corrosion of these coated steels were revealed, following immersion tests in a 70% nitric acid solution. Pitting originated preferentially from coating defect sites and expanded with increasing immersion time. Both Young's modulus and hardness measured by nanoindentation decreased as the corrosion damage intensified. A thin oxide layer formed from the thermal annealing of the as-deposited samples at 900 °C was found to be effective against corrosive attack. In addition, compressive residual stress was noted to suppress the propagation of corrosion-induced cracks. The role of residual stress in controlling the corrosion resistance of these ceramic-coated steels is clarified by finite element analysis. © 2011 Elsevier Ltd. |
Keywords: | Ceramic Modelling studies SEM XPS Acid corrosion Pitting corrosion |
Rights: | Copyright © 2011 Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.corsci.2011.07.011 |
Published version: | http://dx.doi.org/10.1016/j.corsci.2011.07.011 |
Appears in Collections: | Aurora harvest Materials Research Group publications Mechanical Engineering publications |
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