journal article·2015-11

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

M.Y. Yao, C.Y. Gao, J. Huang, J.C. Peng, X. Liang, J.L. Zhang, B.X. Zhou, Q. Li

Corrosion Science· Volume 100
Publisher page

Abstract

Abstract The oxidation behavior of β-Nb precipitates in Zr–1Nb–0.2Bi alloy corroded in lithiated water with 0.01 M LiOH at 360 °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 β-Nb precipitates corroded in lithiated water in early stage is as follows: β-Nb precipitates are first oxidized to NbO 2 , then part of it is further oxidized to Nb 2 O 5 in some specific crystallographic orientations. The reason for accelerated corrosion of Zr–Nb alloys in lithiated water is discussed from the rapid oxidation of β-Nb precipitates.
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OpenAlex topics: Nuclear Materials and Properties · Fusion materials and technologies · High Temperature Alloys and Creep

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