摘要
采用模拟循环回路试验研究了碳钢A106B、A672B60在乙醇胺和氨碱化剂溶液工况下的腐蚀性能,结果表明,A106B、A672B60在乙醇胺水溶液中腐蚀速率与腐蚀产物释放速率低于氨水溶液中;在相同工况条件下,A672B60的腐蚀速率与腐蚀产物释放速率低于A106B。扫描电镜表面形貌结果显示,氨水溶液工况下形成的氧化物表面较疏松多孔。极化曲线、电化学阻抗数据结果表明,A106B、A672B60在乙醇胺水溶液中的反应活性更低,耐蚀性更好。
The corrosion performance of A106B and A672B60 carbon steels in ammonia water solution and ethanolamine water solution was investigated using simulation circulation loop.The corrosion rate and corrosion product release rate of A106B and A672B60 in ethanolamine water solution were lower than those in ammonia water solution.The corrosion rate and corrosion product release rate of A672B60 were lower than those of A106B in ethanolamine water solution and ammonia water solution.The results of scanning electron microscopy showed that the surface morphology of A106B and A672B60 in ammonia water solution was loose and porous.The results of potentiodynamic polarization and electrochemical impedance spectroscopy displaed that A106B and A672B60 in ethanolamine water solution had lower reactivity and better corrosion resistance.
出处
《腐蚀与防护》
CAS
北大核心
2015年第9期828-831,共4页
Corrosion & Protection
基金
大型先进压水堆核电站重大专项(2011ZX06004-017)
关键词
碳钢
乙醇胺
氨
腐蚀
电化学
carbon steel
ethanolamine
ammonia
corrosion
electrochemistry
