阴极保护电位对Q235钢氢脆敏感性和力学性能的影响

中国腐蚀与防护学报

2013, Vol. 33

Issue (4): 271-276

研究报告

本期目录 | 过刊浏览

阴极保护电位对Q235钢氢脆敏感性和力学性能的影响

文丽娟高志明刘洋洋林峰

天津大学材料科学与工程学院天津市材料复合与功能化重点实验室天津 300072

Effects of Applied Cathodic Potential on Susceptibility to Hydrogen Embrittlement and Mechanical Properties of Q235 Steel

WEN Lijuan, GAO Zhiming, LIU Yangyang, LIN Feng

School of Materials Science and Engineering, Tianjin Key Laboratory of Composite & Functional Material, Tianjin University, Tianjin 300072, China

全文: PDF(2887 KB)

摘要: 利用拉伸实验和显微硬度测试等方法研究了不同阴极保护电位对Q235钢在3.5%NaCl溶液中氢脆敏感性的影响，并用SEM对断口形貌进行分析。结果表明，随着阴极保护电位的负移，Q235钢的最大抗拉强度和屈服强度没有呈现规律性变化，但断面收缩率减小，材料发生氢脆的可能性加大。当施加电位为-1100 mV时，断口出现准解理断裂特征形貌。

关键词 ： Q235钢, 阴极保护, 电化学阻抗谱, 显微硬度

Abstract：The hydrogen permeation characteristics of Q235 steel under different applied cathodic protection potential in 3.5%NaCl solution were investigated by using electrochemical, tensile and micro-hardness test. The fracture morphology was observed by scanning electron microscopy (SEM). When the cathodic potential shifted to the negative direction, there was no correlation between maximal tensile strength, yield strength, and hydrogen embrittlement, but the reduction of area decreased. When the polarization potential was -1100 mV, the micro-hardness increased significantly and the fracture morphology exhibited brittle fracture feature.

Key words： Q235 steel cathodic protection EIS micro-hardness

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TG174.41

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引用本文:

文丽娟, 高志明, 刘洋洋, 林峰. 阴极保护电位对Q235钢氢脆敏感性和力学性能的影响[J]. 中国腐蚀与防护学报, 2013, 33(4): 271-276.
WEN Lijuan, GAO Zhiming, LIU Yangyang, LIN Feng. Effects of Applied Cathodic Potential on Susceptibility to Hydrogen Embrittlement and Mechanical Properties of Q235 Steel. Journal of Chinese Society for Corrosion and protection, 2013, 33(4): 271-276.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2013/V33/I4/271

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