304不锈钢在模拟循环冷却水中应力腐蚀破裂的临界Cl-浓度
Critical Cl- Concentration of Stress Corrossion Cracking for 304 Stainless Steel in Simulated Circular Cooling Water
摘 要
采用慢应变速率法和恒应变原位电化学测试法研究了304不锈钢在60 ℃的模拟循环冷却水中,氯离子对其耐蚀性能的影响.结果表明:Cl-浓度小于600 mg/L时,随着Cl-浓度的增加,膜破裂电位迅速负移,点蚀敏感性增大,未发生应力腐蚀破裂；Cl-浓度大于600 mg/L时,随着Cl-浓度的增加,膜破裂电位较负且变化缓慢,应力腐蚀破裂敏感性增大.
模拟循环冷却水
膜破裂电位
应力腐蚀破裂
临界Cl-浓度
304 stainless steel
simulated circular cooling water
pitting potential
SCC
critical Cl- concentration
Abstract
The effect of Cl- on the corrosion resistance of 304 stainless steel in simulated circular cooling water at 60 ℃ was studied by means of in-situ electrochemical tests under constant strain condition and slow strain rate tests (SSRT).When Cl- concentration was below 600 mg/L,the pitting potentials evolved towards negative sharply and the pitting corrosion susceptibility increased with the increase of Cl- concentration;While above 600 mg/L,the pitting potentials shifted towards negative slowly and the stress corrosion cracking (SCC) susceptibility increased with the increase of Cl- concentration.
中图分类号 TG172.6
所属栏目 试验研究
基金项目 中石化项目“三级炼油外排污水回用循环水成套技术开发”(306021)
收稿日期 2007/10/17
修改稿日期
网络出版日期
作者单位点击查看
引用该论文: CHENG Hai-dong,XU Chun-chun,LU Guo-cheng,QU Xiu-hua. Critical Cl- Concentration of Stress Corrossion Cracking for 304 Stainless Steel in Simulated Circular Cooling Water[J]. Corrosion & Protection, 2008, 29(11): 674～677
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】中华人民共和国水利部.2006年中国水资源公报[R].2007,9.
【2】王又蓉.工业水处理问答[M].北京:国防工业出版社,2007:104.
【3】周本省.工业水处理技术[M].北京:化学工业出版社,1997:160.
【4】Cloet T E,Brozel V S,Von H A.Practical aspects of befouling control in industrial water system[J].Int Biodet & Biodegad,1992,29:299-341.
【5】Marcus P.Surface science approach of corrosion phenomena[J].Electrochemical Acta,1988,43:109-118.
【2】王又蓉.工业水处理问答[M].北京:国防工业出版社,2007:104.
【3】周本省.工业水处理技术[M].北京:化学工业出版社,1997:160.
【4】Cloet T E,Brozel V S,Von H A.Practical aspects of befouling control in industrial water system[J].Int Biodet & Biodegad,1992,29:299-341.
【5】Marcus P.Surface science approach of corrosion phenomena[J].Electrochemical Acta,1988,43:109-118.
相关信息
