The effect of hydrogen and helium on microvoid formation in iron and nickel

被引：72

作者：

Ishizaki, T ^{[1
]}

Xu, Q

Yoshiie, T

Nagata, S

Troev, T

机构：

[1] Kyoto Univ, Inst Res Reactor, Sennan, Osaka 5900494, Japan

[2] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[3] Bulgarian Acad Sci, BU-1784 Sofia, Bulgaria

来源：

JOURNAL OF NUCLEAR MATERIALS | 2002年 / 307卷

关键词：

D O I：

10.1016/S0022-3115(02)01279-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Irradiation experiments on iron and nickel were carried out to study the effect of hydrogen and helium ions on, microvoid formation. The total dose was 1.0 x 10(17) hydrogen ions/cm(2) (0.2 dpa) and 9.6 x 10(15) helium ions/cm(2) (0.3 dpa). The irradiation temperature was 423 and 573 K. To investigate microvoid formation and the total amount of residual defects, positron annihilation lifetime and coincidence Doppler broadening measurements were made. The results for positron lifetime indicated that vacancy clusters grew more easily in nickel than in iron and helium atoms were more effective for microvoid formation than hydrogen atoms. The temperature dependence of microvoid growth was greater after irradiation with hydrogen ions than helium ions between 423 and 573 K in both metals. Annealing experiments for nickel irradiated with hydrogen and helium ions at 423 k were carried out at up to 573 K and the stability of helium-vacancy complexes was clarified. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：961 / 965

页数：5

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