UH3 produced at the initial stage of U-H2O corrosion

被引：3

作者：

Li, Haibo ^{[1
]}

Wang, Shuaipeng ^{[2
]}

Li, Gan ^{[1
]}

Wu, Haoxi ^{[2
]}

Pu, Zhen ^{[2
]}

Bin, Ren ^{[1
]}

Meng, Daqiao ^{[2
]}

Luo, Wenhua ^{[1
]}

机构：

[1] Sci & Technol Surface Phys & Chem Lab, Mianyang 621908, Peoples R China

[2] China Acad Engn Phys, Inst Mat, Mianyang 621907, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 217卷

基金：

中国国家自然科学基金;

关键词：

Interfacial UH 3; Raman spectroscopy; U-H 2 O reaction; Corrosion mechanisms; Isotopic labelling method; URANIUM HYDRIDE; LIQUID WATER; RAMAN; SPECTROSCOPY; DESORPTION; OXIDATION; KINETICS; VAPOR; AIR;

D O I：

10.1016/j.corsci.2023.111143

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The characteristic Raman spectra of UH3 produced at the initial stage of U-H2O corrosion were observed, which provided direct evidence of the existence of water-formed interfacial UH3. The results were further identified and confirmed using the isotopic labelling method and other characterization techniques. The water-formed hydride layer was distributed at the interface of metallic uranium and oxide exhibiting several nanometers of thickness via the depth profile analysis. The characterizations of oxidation behavior suggested that the interfacial UH3 transformed to oxide and acted as a reaction front in the corrosion process. The experimental results supported the hydride-catalyzed corrosion mechanism of wet oxidation.

引用

页数：7

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