超级13Cr不锈钢在气液两相环境下的腐蚀行为研究  

Corrosion Behavior of Super 13Cr Stainless Steel in Two-phase Environment

作　　者：牛坤[1] 郭俊文[1] 张国超[2,3] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032 [2]宝鸡石油钢管有限责任公司钢管研究院,陕西宝鸡721008 [3]国家石油天然气管材工程技术研究中心,陕西宝鸡721008

出　　处：《全面腐蚀控制》2015年第3期47-50,共4页Total Corrosion Control

摘　　要：采用高温高压釜试验系统,研究了超级13Cr不锈钢在气液两相环境中的腐蚀行为。结果表明,气相时超级13Cr钢的腐蚀速率在150℃时达到最大,液相时在130℃附近时即达到最大,且气相腐蚀速率大于液相;两相环境中超级13Cr均发生了不同程度的点蚀,气相环境中的点蚀较液相严重,气相环境下水膜与材料表面气/液交界形成浓差腐蚀电池是局部腐蚀发生的主要原因。The corrosion behaviors of super 13Cr stainless steel were studied with high temperature and high pressure CO_2 corrosion tests in gas-liquid two phase in the environment. The results showed that the maximal corrosion rate appeared at 150℃ in gas phase, and the maximal corrosion rate appeared at 130℃ in liquid phase. And the gas phase corrosion rate is greater than the liquid phase, super 13Cr occurred in pitting in two-phase environment, gas phase environment pitting more serious than in the liquid phase, the main cause of local corrosion is concentration cell corrosion occurred in gas/liquid junction of material surface

关 键 词：超级13Cr不锈钢 CO_2腐蚀 气液相 

分 类 号：TG174.3[金属学及工艺—金属表面处理]