Oxidation behavior of β-Nb precipitates in Zr-1Nb-0.2Bi alloy corroded in lithiated water at 360 °C

被引：26

作者：

Yao, M. Y. ^{[1
,2
]}

Gao, C. Y. ^{[1
,2
]}

Huang, J. ^{[1
,2
]}

Peng, J. C. ^{[1
,2
]}

Liang, X. ^{[1
,2
]}

Zhang, J. L. ^{[1
,2
]}

Zhou, B. X. ^{[1
,2
]}

Li, Q. ^{[1
,2
]}

机构：

[1] Shanghai Univ, Inst Mat, Shanghai 200072, Peoples R China

[2] Shanghai Univ, Lab Microstruct, Shanghai 200444, Peoples R China

来源：

CORROSION SCIENCE | 2015年 / 100卷

基金：

中国国家自然科学基金;

关键词：

Zirconium; TEM; High temperature corrosion; Oxidation; CORROSION-RESISTANCE; METAL/OXIDE INTERFACE; SUPERHEATED STEAM; ZIRCONIUM ALLOYS; BI ADDITION; OXIDE; EVOLUTION;

D O I：

10.1016/j.corsci.2015.07.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxidation behavior of beta-Nb Precipitates in Zr-1Nb-0.2Bi alloy corroded in lithiated water with 0.01 M LiOH at 360 degrees C/18.6 MPa was investigated by high-resolution transmission electron microscopy (HRTEM). From the HRTEM observation and the analysis for the oxide layer, the oxidation behavior of beta-Nb precipitates corroded in lithiated water in early stage is as follows: beta-Nb precipitates are first oxidized to NbO2, then part of it is further oxidized to Nb2O5 in some specific crystallographic orientations. The reason for accelerated corrosion of Zr-Nb alloys in lithiated water is discussed from the rapid oxidation of beta-Nb precipitates. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：169 / 176

页数：8

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