Morphology and mechanical characteristics of monolayer and multilayer Ir coating by double glow plasma
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- 作者：Wangping Wu 吴王平 ; Jinjin Jiang ; Zhaofeng Chen…
- 关键词：Key wordsmorphology ; residual stress ; adhesive force ; monolayer ; multilayer ; iridium
- 刊名：Journal of Wuhan University of Technology-Mater. Sci. Ed.
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：32
- 期：1
- 页码：190-196
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Materials Science, general;
- 出版者：Wuhan University of Technology
- ISSN：1993-0437
- 卷排序：32
文摘
Multilayer iridium coating was manufactured on tungsten carbide substrates by a double glow plasma process. As comparison, monolayer was also produced. The microstructure and morphology were observed using scanning electron microscopy. Grain orientation and phase were determined using X-ray diffraction. The residual stress of the coating was studied by glancing incidence X-ray diffraction. The adhesive force of the coating was measured by a scratch tester. The results showed that both monolayer and multilayer had a polycrystalline phase with a strong (110) reflection. The coating had an excellent adhesion with no evidence of delamination. The adhesive force of the monolayer and multilayer was about 50 and 43 N, respectively. The interfacial reaction between the substrate and the layer occurred and a new WIr phase was found due to the high-temperature deposition process. The residual stress in the monolayer and multilayer was -1.6 and -1.1 GPa, respectively.