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中国腐蚀与防护学报  2004, Vol. 24 Issue (4): 208-212     
  研究报告 本期目录 | 过刊浏览 |
外加电位对X70管线钢在近中性PH溶液中的应力腐蚀破损的影响
郭浩
Effect of Applied Potentials on Stress Corrosin Cracking of X70 Pipeline Steel in Near-Neutral-pH Solutions
全文: PDF(228 KB)  
摘要: 采用慢应变速率试验(SSRT)研究了不同电位下X70管线钢在近中性pH溶液中的应力腐蚀破裂(SCC)行为,同时研究了溶液中通往不同含量CO2对SCC的影响。结果表明,X70管线钢在近中性pH溶液中的开裂方式是穿晶型的,具有准解理特征,并且随着外加阴极电位的降低,SCC敏感性增加,随CO2含量的增加,pH值降低,SCC敏感性增加,均表现为氢致开裂占主导。
关键词 管线钢应力腐蚀破裂近中性pH电位CO2含    
Abstract:The stress corrosion cracking(SCC) behaviior of X70pipeline steel in near-neutral-pH solutions at different applied potentials and the effect of different levels of CO2 on SCC were studied with slow strain rate testing (SSRT). The results showed that the cracking mode of X70pipeline steel in near-neutral-pH solutions was transgranular, with the features of quasi-cleavage. The susceptibilit to SCC increased as the applied potential moved towards the cathodic direction The value of pH decreased with the increased addition of CO2 in the solution, which increased the susceptibitlity to SCC. Hydroge induced cracking(HIC) dominated the process.
Key wordspipeling steel    stress corrosion cracking    near-neutral pH    potential    carbon dioxide
收稿日期: 2003-05-12     
ZTFLH:  TG172.8  

引用本文:

郭浩 . 外加电位对X70管线钢在近中性PH溶液中的应力腐蚀破损的影响[J]. 中国腐蚀与防护学报, 2004, 24(4): 208-212 .

链接本文:

https://www.jcscp.org/CN/Y2004/V24/I4/208

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