Evaluation of hydrogen entry into high strength steel under atmospheric corrosion

被引：139

作者：

Akiyama, Eiji ^{[1
]}

Matsukado, Katsuhiro ^{[1
]}

Wang, Maoqiu ^{[1
]}

Tsuzaki, Kaneaki ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Struct Met Ctr, Tsukuba, Ibaraki 3050047, Japan

来源：

CORROSION SCIENCE | 2010年 / 52卷 / 09期

关键词：

Steel; Thermal desorption spectroscopy; cyclic corrosion test; Atmospheric corrosion; hydrogen embrittlement; delayed fracture; DELAYED FRACTURE PROPERTY; NOTCH TENSILE-STRENGTH; EMBRITTLEMENT; DEGRADATION; PERMEATION; BOLTS; IRON;

D O I：

10.1016/j.corsci.2009.11.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hydrogen entry into high strength steels by atmospheric corrosion has been investigated to evaluate their susceptibility to hydrogen embrittlement. High strength steels were corroded by dry/wet cyclic corrosion after NaCl deposition. The maximum diffusible hydrogen concentration around the surface was successfully obtained by means of thermal desorption analysis after keeping the specimens at high humidity to reproduce enhanced hydrogen entry influenced by the rust layer and to homogenize the hydrogen distribution. Despite decrease in corrosion rate, hydrogen content in specimens did not decrease. Decrease of pH in inner rust layer is responsible for the enhanced hydrogen entry into steel. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2758 / 2765

页数：8

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