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https://hdl.handle.net/2440/124091
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Type: | Journal article |
Title: | Erosion–corrosion resistance of a β-Ta₂O₅ nanocrystalline coating in two-phase fluid impingement environments |
Other Titles: | Erosion-corrosion resistance of a beta-Ta(2)O(5) nanocrystalline coating in two-phase fluid impingement environments |
Author: | Xu, J. Peng, S. Jiang, S. Munroe, P. Xie, Z.H. |
Citation: | Materials Science and Technology, 2019; 35(8):925-938 |
Publisher: | Taylor & Francis |
Issue Date: | 2019 |
ISSN: | 0267-0836 1743-2847 |
Statement of Responsibility: | Jiang Xu, Shuang Peng, Shuyun Jiang, Paul Munroe and Zong-Han Xie |
Abstract: | In this study, a β-Ta₂O₅ coating was deposited onto a Ti–6Al–4V substrate using a double-cathode glow discharge plasma technique. The hardness and elastic modulus values of the β-Ta₂O₅ coating were almost 4 times and 1.8 times greater than that of the Ti–6Al–4V substrate, respectively. Potentiodynamic polarisation curves indicated that the current densities of the β-Ta₂O₂ coated sample are least one order of magnitude less than that observed for the uncoated substrate under a solid/liquid slurry flow. Electrochemical impedance spectroscopy results showed that the resistance values for the β-Ta₂O₅ coating are of the order of 10⁶ Ω cm², and at the same erosion time, the resistance value for the β-Ta₂O₅ coating is one order of magnitude greater than that of the Ti–6Al–4V. |
Keywords: | Erosion–corrosion; polarisation; β-Ta₂O₅ nanocrystalline coating; EIS; synergy |
Rights: | © 2019 Institute of Materials, Minerals and Mining. |
DOI: | 10.1080/02670836.2019.1597483 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1080/02670836.2019.1597483 |
Appears in Collections: | Aurora harvest 8 Mechanical Engineering publications |
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