Microstructure and Corrosion Resistance of the AlTiN Coating Deposited by Arc Ion Plating

被引：0
|
作者：
Qi-Xiang Fan
Tie-Gang Wang
Yan-Mei Liu
Zheng-Huan Wu
Tao Zhang
Tong Li
Zu-Bing Yang
机构：
[1] Tianjin University of Technology and Education,Tianjin Key Laboratory of High Speed Cutting and Precision Machining
[2] Tianjin University of Technology and Education,Division of State
[3] Tianjin University of Technology and Education,owned Assets Management
来源：
Acta Metallurgica Sinica (English Letters) | 2016年 / 29卷
关键词：
Arc ion plating; AlTiN coating; Corrosion behavior; Microstructure; Hardness;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A new type of AlTiN coating containing about 29.13 at.% Al,16.02 at.% Ti and 54.85 at.% N was prepared by arc ion plating technology. The coating is composed of singular fcc-(Al, Ti)N phase and has no hcp-AlN phase to be formed. Due to the high content of beneficial element Al, the hardness and effective elastic modulus of the coating are up to 33.9 and 486.1 GPa, respectively. The adhesion strength between the coating and substrate is about 39.7 N. Electrochemical test shows that the corrosion current density of the AlTiN coating is nearly one-sixth of the substrate, and the charge transfer resistance Rct of the AlTiN coating is much larger than that of the substrate, which means that the coating could act as a protective barrier between the substrate and corrosive electrolyte, enhancing the corrosion resistance.
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页码：1119 / 1126
页数：7
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