Effects of Substrate Temperature on the Corrosion Behaviour of Nanochromium Coatings Deposited by Direct Current Magnetron Sputtering

被引：4

作者：

Ren, Yanjie ^{[1
]}

Chen, Jian ^{[1
]}

Chen, Yaqing ^{[1
]}

Chen, Jianlin ^{[1
]}

Qiu, Wei ^{[1
]}

机构：

[1] Changsha Univ Sci & Technol, Dept Energy & Power Engn, Changsha 410076, Hunan, Peoples R China

来源：

JOURNAL OF NANOMATERIALS | 2016年 / 2016卷

基金：

中国国家自然科学基金;

关键词：

PEM FUEL-CELL; STAINLESS-STEEL; BIPOLAR PLATES; FILMS; POLYPYRROLE; GROWTH;

D O I：

10.1155/2016/4894062

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanochromium coatings were deposited on 316L stainless steel bipolar plates of a proton-exchange membrane fuel cell (PEMFC) by a direct current magnetron sputtering technique. The effect of substrate temperature on the corrosion resistance of nanochromium coatings was investigated. The corrosion performance of the bare and chromium-coated steel in a simulated environment of PEMFC (0.5M H2SO4 + 2 ppm F-) was studied using electrochemical impedance spectroscopy, polarisation, and open circuit potential measurements. The results showed that the corrosion rates of two nanochromium coatings deposited at 300 degrees C and 500 degrees C were lower than those of uncoated steel by more than one order of magnitude. Electrochemical impedance spectra of both nanochromium coatings exhibited distinct characteristics in corrosive solution. The nanochromium coating deposited at 500 degrees C showed superior stability in the corrosive solution.

引用

页数：7

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