The role of Nb in enhancing the corrosion resistance of U-Nb alloy to hydrogen

被引：2

作者：

Chen, Licheng ^{[1
]}

Ji, Hefei ^{[1
]}

Su, Bin ^{[1
]}

Chen, Piheng ^{[1
]}

Wang, Xiaolin ^{[1
]}

机构：

[1] China Acad Engn Phys, Mianyang 621900, Peoples R China

来源：

CORROSION SCIENCE | 2025年 / 243卷

基金：

中国国家自然科学基金;

关键词：

U-Nb alloy; Hydrogen corrosion; SQS; AIMD; TOF-SIMS; GAMMA-U; URANIUM; OXIDATION; KINETICS; BEHAVIOR; SOLUBILITY; ABSORPTION; DIFFUSION; DYNAMICS; HYDRIDE;

D O I：

10.1016/j.corsci.2024.112594

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion resistance of uranium to hydrogen has been significantly enhanced by niobium addition while its mechanism remains unknown. To better understanding the underlying effect of niobium addition, behaviours of hydrogen in alpha-U, dilute U-Nb alloy and concentrated U-Nb alloy have been systematically explored by ab-initio calculations and experimental observations. Our findings suggest that Nb atoms play distinct roles in the dilute and concentrated single-phase U-Nb alloys, shifting from hydrogen traps to rapid hydrogen diffusion channels. Moreover, the dominant mechanisms enhancing hydrogen corrosion resistance differ between dilute and concentrated U-Nb alloys.

引用

页数：9

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