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
收藏
页码：47 / 52
页数：6
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