An integrated modeling and experimental approach to study hydrogen pickup mechanism in zirconium alloys

被引：19

作者：

Couet, A. ^{[1
]}

Borrel, L. ^{[1
]}

Liu, J. ^{[2
]}

Hu, J. ^{[3
]}

Grovenor, C. ^{[2
]}

机构：

[1] Univ Wisconsin, Dept Engn Phys, 1500 Engn Dr, Madison, WI 53703 USA

[2] Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England

[3] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA

来源：

CORROSION SCIENCE | 2019年 / 159卷

基金：

英国工程与自然科学研究理事会;

关键词：

Corrosion; TEM; Oxidation; Porosity; Zirconium alloys; FUEL CLADDING ALLOYS; OXIDATION-KINETICS; CORROSION; NB; OXIDES; ZR; DIFFUSION; TEMPERATURE; STRESS; METALS;

D O I：

10.1016/j.corsci.2019.108134

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hydrogen pick-up during corrosion of nuclear fuel cladding is a critical life-limiting degradation mechanism in Light Water Reactors. In this study, the oxidation kinetics and hydrogen pickup of a Zr-0.5Nb and an annealed Zr-1.0Nb alloys are being measured during corrosion in pure water autoclave (360 C, 18 MPa). Both the oxidation and hydriding kinetics are successfully reproduced by the Coupled Current Charge Compensation (C4) corrosion model, which now includes proton transport. The nanoscale porosity in the oxides are measured quantitatively by TEM. It is shown that a higher oxide porosity corresponds to a higher proton diffusivity predicted by the C4 model.

引用

页数：10

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