Identifying suboxide grains at the metal-oxide interface of a corroded Zr-1.0%Nb alloy using (S)TEM, transmission-EBSD and EELS

被引：68

作者：

Hu, Jing ^{[1
]}

Garner, Alistair ^{[2
]}

Ni, Na ^{[3
]}

Gholinia, Ali ^{[2
]}

Nicholls, Rebecca J. ^{[1
]}

Lozano-Perez, Sergio ^{[1
]}

Frankel, Philipp ^{[2
]}

Preuss, Michael ^{[2
]}

Grovenor, Chris R. M. ^{[1
]}

机构：

[1] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

[2] Univ Manchester, Sch Mat, Mat Performance Ctr, Manchester, Lancs, England

[3] Univ London Imperial Coll Sci Technol & Med, Dept Mat, Royal Sch Mines, London, England

来源：

MICRON | 2015年 / 69卷

基金：

英国工程与自然科学研究理事会;

关键词：

Zirconium alloys; (S)TEM; Transmission-EBSD; Transmission Kikuchi Diffraction; EELS; Suboxide; Oxidation mechanism; METAL/OXIDE INTERFACE; ELECTRON-MICROSCOPY; ZIRCONIUM; OXIDATION; DIFFRACTION; ZIRCALOY-2; AUTOCLAVE; CORROSION;

D O I：

10.1016/j.micron.2014.10.004

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

Here we report a methodology combining TEM, STEM, Transmission-EBSD and EELS to analyse the structural and chemical properties of the metal-oxide interface of corroded Zr alloys in unprecedented detail. TEM, STEM and diffraction results revealed the complexity of the distribution of suboxide grains at the metal-oxide interface. EELS provided accurate quantitative analysis of the oxygen concentration across the interface, identifying the existence of local regions of stoichiometric ZrO and Zr3O2 with varying thickness. Transmission-EBSD confirmed that the suboxide grains can be indexed with the hexagonal ZrO structure predicted with ab initio by Nicholls et al. (2014). The t-EBSD analysis has also allowed for the mapping of a relatively large region of the metal-oxide interface, revealing the location and size distribution of the suboxide grains. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：35 / 42

页数：8

共 19 条

[1] Examination of the chemical composition of irradiated zirconium based fuel claddings at the metal/oxide interface by TEM [J].