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
收藏
页码：169 / 176
页数：8
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