Corrosion-driven outward migration and growth of helium bubbles in a nickel-based alloy in high-temperature molten salt environment

被引：10

作者：

Lei, Guanhong ^{[1
,2
]}

Yang, Sida ^{[3
]}

Huang, Hefei ^{[1
]}

Huang, Qing ^{[1
]}

Liu, Renduo ^{[1
]}

Zhang, Wei ^{[1
]}

Yu, Guojun ^{[1
]}

Yan, Long ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Shanghai Spaceflight Precis Machinery Inst, Shanghai 201600, Peoples R China

来源：

CORROSION SCIENCE | 2019年 / 153卷

基金：

中国国家自然科学基金;

关键词：

Corrosion; Nickel-based alloy; Helium bubbles; High-temperature irradiation; High-temperature annealing; STRUCTURAL-MATERIALS; GAS-RELEASE; IRRADIATION; NI; PERFORMANCE; CHALLENGES; ELEMENTS; CRACKING; SURFACE; METALS;

D O I：

10.1016/j.corsci.2019.03.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-temperature helium ion irradiation was conducted on a nickel-based alloy at 650 degrees C. A unique outward migration of helium bubbles was observed in the irradiated alloy under molten salt environment, distinguished from the evolution of helium bubbles induced by room-temperature irradiation, which is related to the deficit of vacancies in the high-temperature irradiated alloy and slow growth rate of the bubbles. Moreover, it was elucidated that corrosion induced vacancies rather than high-temperature annealing effect of molten salt is responsible for the evolution of helium bubbles formed by high-temperature helium ion irradiation.

引用

页码：47 / 52

页数：6

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