THE EFFECT OF ION-IMPLANTATION OF AR ON THE AQUEOUS CORROSION-RESISTANCE OF ZR-4 ALLOY

被引:22
作者
HE, JH
BAI, XD
MA, CL
CHEN, HM
机构
[1] Department of Materials Science and Engineering, Tsinghua University, Beijing
关键词
D O I
10.1016/0168-583X(94)00744-6
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The effect of ion implantation on the aqueous corrosion resistance of Zr-4 in deaerated 1N H2SO4 was studied with the potentiokinetic technique. The Zr-4 alloy was bombarded with 5 X 10(14)-2 X 10(16) Ar/cm(2) of 190 keV. It was found that the passive current density of Zr-4 decreases with increasing implantation dose. Photoelectrochemical results show that the ion implantation of Ar in Zr-4 raises the flatband potential of its passive film. AES was employed to analyze the surface of the passive film of Zr-4. The decrease in passive current density may be attributed to a thickening oxide layer on Zr-4 and a decrease in concentration of oxygen vacancies in its passive film.
引用
收藏
页码:59 / 64
页数:6
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