摘要
采用电化学极化、慢应变拉伸、外加极化电位等方法对20钢在饱和H2S溶液中的应力腐蚀及其预防措施进行了研究。研究结果表明,20钢在饱和H2S水溶液中具有很高的应力腐蚀敏感性;在饱和H2S水溶液中对20钢进行适当的阳极或阴极极化均可降低20钢的应力腐蚀开裂敏感性,但阳极极化效果最为明显;在饱和H2S水溶液中添加咪唑啉缓蚀剂、硫脲-吡啶复配缓蚀剂都能显著降低20钢的应力腐蚀开裂敏感性。
The stress corrosion-induced cracking(SCC) of 20 steel in saturated H2S solution and its protection were studied using electrochemical polarization,slow strain rate tensile test and applied potential methods.The results showed that 20 steel had high SCC sensitivity in saturated H2S solution.The SCC sensitivity of the 20 steel could be reduced by applying anodic or cathodic polarization,and the anodic polarization was more effective than cathodic polarization in preventing the 20 steel from stress corrosion-induced cracking.Besides,it was feasible to remarkably reduce the sensitivity to SCC of 20 steel by introducing imidazoline or pridinium-sulfourea as inhibitor in the saturated H2S solution.
出处
《材料保护》
CAS
CSCD
北大核心
2007年第7期15-17,共3页
Materials Protection
