In situ observation of formation and spreading of micro-droplets on magnesium and its alloy under cyclic wet-dry conditions

被引：27

作者：

Chen, Jian ^{[1
]}

Wang, Jianqiu ^{[1
]}

Han, Enhou ^{[1
]}

Ke, Wei ^{[1
]}

机构：

[1] Chinese Acad Sci, Met Res Inst, Environm Corros Ctr, Shenyang 110016, Peoples R China

来源：

CORROSION SCIENCE | 2007年 / 49卷 / 03期

基金：

中国国家自然科学基金;

关键词：

magnesium; AZ91 magnesium alloy; cyclic wet-dry conditions; in situ; environmental scanning electron microscope;

D O I：

10.1016/j.corsci.2006.09.003

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

The formation and spreading of micro-droplets on pure magnesium and its alloy in an atmosphere of water vapor under cyclic wet-dry conditions was studied using an environmental scanning electron microscope (ESEM). The in situ observations indicated that the corrosion product stimulated the formation and spreading of micro-droplets, and the grain boundaries for pure magnesium and (3 phase for AZ91 magnesium alloy had no influences on this process. The oxygen concentration on the surface generally increased with the wetting time. The corrosion products decreased the corrosion rate. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1625 / 1634

页数：10

共 7 条

[1]

ESEM observations of SCC initiation for 4340 high strength steel in distilled water [J].