In-situ study of the formation process of stannate conversion coatings on AZ91D magnesium alloy using electrochemical noise

被引：53
|
作者：
Liu, Xiaolan [1 ]
Zhang, Tao [1 ,2 ]
Shao, Yawei [1 ,2 ]
Meng, Guozhe [1 ,2 ]
Wang, Fuhui [1 ,2 ]
机构：
[1] Harbin Engn Univ, Corros & Protect Lab, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin 150001, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Magnesium; Electrochemical calculation; SEM; Oxide coatings; STAINLESS-STEEL SURFACES; CORROSION-RESISTANCE; PITTING CORROSION; CHLORIDE SOLUTION; PURE MAGNESIUM; ANALYSIS ENA; TRANSFORM; ALUMINUM; CERIUM; INHIBITION;
D O I：
10.1016/j.corsci.2009.11.009
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The formation process of stannate conversion coating (CC) on AZ91D alloy was in-situ investigated by electrochemical noise (EN). The wavelet transform, as well as noise resistance (R-n) and spectral noise resistance (R-sn), had been employed to analyze the EN data. It was revealed that there exist two distinguishing stages of stannate CC formation process on AZ91D alloy, including an incubation stage companying with the nucleation and nuclei dissolution process, a periodical growth stage involving hemispherical particles growth and coating dissolution process. Furthermore, the results demonstrated that EN was a powerful tool to investigate rapid electrochemical process, such as CC formation process. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：892 / 900
页数：9
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