The effect of heat treatment temperature on the structure and barrier performance of a zirconia coating electrodeposited by pulse current

被引：12
|
作者：
Samiee, F. [1 ]
Raeissi, K. [1 ]
Golozar, M. A. [1 ]
机构：
[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 05期
关键词：
Stainless steel; TEM; EIS; XRD; Amorphous structures; Electrodeposited films; ELECTROLYTIC DEPOSITION; CORROSION BEHAVIOR; FILMS; STEEL;
D O I：
10.1016/j.corsci.2011.02.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Zirconia coatings were prepared by heat-treating the electrodeposited zirconium hydroxide produced by pulse current on 316L stainless steel. The results showed that a coating with amorphous structure obtained after heat treating at 200 degrees C, reveals no corrosion barrier performance. Heat treating at 400 degrees C resulted in zirconia coating with nanocrystalline/amorphous structure, which reveals a strong corrosion barrier performance. This coating shows a high value of pore resistance and Warburg behaviour in electrochemical impedance spectroscopy. As the temperature was raised to 600 degrees C, an entirely nanocrystalline structure was found. However, this coating revealed muddy shape cracks, with inferior corrosion barrier performance. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1969 / 1975
页数：7
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