Synchrotron X-ray microtomography study of the role of Y in corrosion of magnesium alloy WE43

被引：64

作者：

Davenport, Alison J. ^{[1
]}

Padovani, Cristiano

Connolly, Brian J.

Stevens, Nicholas P. C.

Beale, Thomas A. W.

Groso, Amela

Stampanoni, Marco

机构：

[1] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[2] Univ Manchester, Sch Mat, Manchester M60 1QD, Lancs, England

[3] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2007年 / 10卷 / 02期

关键词：

D O I：

10.1149/1.2400727

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Synchrotron X-ray microtomography has been used to study the distribution of Y in the aerospace magnesium alloy WE43 and its role in the morphology of corrosion attack. A three-dimensional Y map was obtained by acquiring tomographic images above and below the Y K-edge at 17 keV. Tomographic images from a heavily corroded as-cast WE43 sample showed that Y-rich regions of the matrix slow the propagation of corrosion. In situ time-dependent tomographic images of corrosion of heat-treated WE43 show that homogenization of the distribution of Y decreases the corrosion rate, but both general attack and pitting is still observed. (c) 2006 The Electrochemical Society.

引用

页码：C5 / C8

页数：4

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