Investigations on the electrochemical behavior of Zr-Al-Cu-Ni bulk metallic glass

被引：0

作者：

Buchholz, K ^{[1
]}

Gebert, A ^{[1
]}

Mummert, K ^{[1
]}

Eckert, J ^{[1
]}

Schultz, L ^{[1
]}

机构：

[1] IFW Dresden, Inst Met Werkstoffe, D-01171 Dresden, Germany

来源：

BULK METALLIC GLASSES | 1999年 / 554卷

关键词：

D O I：

暂无

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The passivation behavior of bulk glassy Zr55Al10Cu30Ni5 ahoy samples in weakly alkaline sulphate solution (pH = 8) is investigated in comparison to the are-melted crystalline alloy, to the main alloying component zirconium and to aluminium. Results of potentiodynamic and potentiostatic polarization measurements reveal the formation of a stable passivating surface film on the glassy alloy grown by a high-field mechanism. Auger electron spectroscopic investigations of anodized sample surfaces show that the films formed on the glassy Zr-Al-Cu-Ni alloys exhibit a composition gradient in cross-sectional direction. In 0.001M NaCl electrolytes bulk glassy Zr-Al-Cu-Ni samples are susceptible to pitting corrosion, which is due to the existence of crystalline inclusions.

引用

页码：161 / 166

页数：6

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