The effect of chromate on the pitting susceptibility of AA7075-T651 studied using potentiostatic transients

被引：28
|
作者：
Gupta, R. K. [1 ,2 ]
Hinton, B. R. W. [1 ,2 ]
Birbilis, N. [1 ]
机构：
[1] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia
[2] Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia
来源：
CORROSION SCIENCE | 2014年 / 82卷
关键词：
Pitting corrosion; Aluminium; Potentiostatic; Alloy; AL-CU-MG; ALUMINUM-ALLOYS; STOCHASTIC-MODELS; STAINLESS-STEELS; PIT INITIATION; CORROSION; TRANSITION; CHEMISTRY; MECHANISM; KINETICS;
D O I：
10.1016/j.corsci.2014.01.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of chromate on metastable pitting of AA7075-T651 as determined via potentiostatic polarisation is reported. A systematic study of metastable pitting and its correlation with stable pits was conducted in various concentrations of sodium chromate (Na2CrO4), revealing the metastable pitting rate was able to provide a quantitative metric for pitting corrosion. The size and number of metastable pits decreased significantly in the presence of chromate. The present study is intended as a general baseline for the assessment of future chromate replacement technologies, as elaborated herein. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：197 / 207
页数：11
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