Corrosion behaviors of Cr-Al-N coatings deposited by reactive magnetron sputtering

来源期刊:中国有色金属学报(英文版)2007年增刊第1期(Part ⅡB)

论文作者:多树旺 朱明 刘庭芝 李忠峻 王鹏 李美栓

文章页码:841 - 846

Key words:Cr-Al-N coatings; corrosion behavior; magnetron sputtering

Abstract: CrN and Cr-Al-N coatings were deposited by reactive magnetron sputtering on the glass substrate, and their corrosion behavior was studied. The electrochemical tests using both DC (polarization curves) and AC techniques (EIS) were carried out on Potentiostat/Galvanstat (EG&G) in 3.5% (mass fraction) NaCl solution. After immersed into NaCl solution for 1 h, the mass of the CrN coating keeps constant with the time continuing. This can be explained by the passivation of the coating. The comparison between the corrosion potential (φcorr) of the Cr-Al-N coatings with different aluminum contents reveals that the corrosion potentials of the aluminum contain coatings are nobler than that of the CrN coatings. This means that the addition of aluminum shifts the corrosion potential to more positive potential value. Among these coatings, CrN in NaCl solution exhibits the worst corrosion resistance, while the corrosion resistance of Cr0.63Al0.37N in NaCl solution is the best. The polarization data and EIS data suggest that addition of aluminum can improve the corrosion resistance of CrN coating.

基金信息:the National Natural Science Foundation of China

相关论文

  • 暂无!

相关知识点

  • 暂无!

有色金属在线官网  |   会议  |   在线投稿  |   购买纸书  |   科技图书馆

中南大学出版社 技术支持 版权声明   电话:0731-88830515 88830516   传真:0731-88710482   Email:administrator@cnnmol.com

互联网出版许可证:(署)网出证(京)字第342号   京ICP备17050991号-6      京公网安备11010802042557号