期刊
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
卷 49, 期 1, 页码 76-80出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1023193513010059
关键词
platinum; coating; titanium; mechanical; electrochemical
资金
- National Natural Science Foundation of China [50872055/E020703]
- Funding for Outstanding Doctoral Dissertation in NUAA [BCXJ11-09]
- Fundamental Research Funds for the Central Universities
- Jiangsu Innovation Program for Graduate Education [CXLX11_0207]
In this paper, a platinum coating was deposited on titanium alloy substrate by a double glow plasma. Phase and microstructure of platinum coating were examined by X-ray diffraction and scanning electron microscopy, respectively. The microhardness of the coating was estimated by nanoindentation instrument. The adhesive force between the coating and the substrate was performed with scratch tester. The electrochemical behavior of the platinum coating in 3.5 wt % sodium chloride solution was investigated by potentiodynamic polarization. The results indicated that an adherent platinum coating could be successfully obtained on titanium alloy substrates. Compared with the titanium alloy substrate, the platinum coating had a relative low corrosion current density and high corrosion potential. It indicated that the platinum coating had a better corrosion resistance than the titanium alloy substrate.
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