Localized corrosion of steel sheet piling

被引：19
|
作者：
Melchers, Robert E. [1 ]
Jeffrey, Robert J. [1 ]
Usher, Kayley M. [2 ]
机构：
[1] Univ Newcastle, Ctr Infrastruct Performance & Reliabil, Newcastle, NSW 2308, Australia
[2] CSIRO Land & Water, Wembley, WA 6913, Australia
来源：
CORROSION SCIENCE | 2014年 / 79卷
基金：
澳大利亚研究理事会;
关键词：
Mild steel; SEM; Weight loss; Pitting corrosion; Selective oxidation;
D O I：
10.1016/j.corsci.2013.10.038
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
When steel sheet piling suffers accelerated low water corrosion the webs and flange-web regions of individual piles often perforate first, for reasons not fully understood. To investigate this, samples of the cross-sections of typical U and Z profile sheet piling were exposed to natural seawater for 1,2 and 3 years. They showed localized corrosion in the central region and also near the flange-web junctions. These locations were found to have more material defects and segregation and show composition differences. It is proposed these observations are linked to localized sheet pile perforation after long exposure to seawater. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：139 / 147
页数：9
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