Influence of hydrogen bubbles adhering to the exposed surface on the corrosion rate of magnesium alloys AZ31 and AZ61 in sodium chloride solution

被引：11

作者：

Feliu, S., Jr. ^{[1
]}

Garcia-Galvan, F. R. ^{[1
]}

Llorente, I. ^{[1
]}

Diaz, L. ^{[2
]}

Simancas, J. ^{[1
]}

机构：

[1] CSIC, Ctr Nacl Invest, Avda Gregorio del Amo 8, Madrid 28040, Spain

[2] Univ Simon Bolivar, Dept Ciencias Mat, Caracas 1080A, Venezuela

来源：

MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2017年 / 68卷 / 06期

关键词：

EIS; magnesium alloys; passivity; weight loss; XPS; GAS-EVOLVING ELECTRODES; ELECTROCHEMICAL IMPEDANCE; ATMOSPHERIC CORROSION; NACL SOLUTION; MASS-LOSS; MG-ALLOY; RESISTANCE; BEHAVIOR; FILMS; TEMPERATURE;

D O I：

10.1002/maco.201609233

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of the presence of hydrogen bubbles adhered to the corroding specimen surface on the EIS estimations of corrosion rate of magnesium alloys is considered. The EIS corrosion rates for AZ31 specimens exposing a small area were four times higher than the real values determined by gravimetric or hydrogen evolution measurements. In contrast, no significant differences in the corrosion rate have been observed in the case of the AZ61 specimens. A progressive deterioration in the protective properties of the corrosion products layer formed during the test was observed only on AZ31 specimens exposing a small area.

引用

页码：651 / 663

页数：13

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