X100管线钢在库尔勒土壤模拟溶液中的微生物腐蚀特征  

Microbiological Corrosion Characteristics of X100 Pipeline Steel in Simulated Ku'erle Soil Solution

作　　者：孙福洋 赵国仙[1] 杨东平[1] 

机构地区：[1]西安石油大学材料科学与工程学院,西安710065

出　　处：《材料导报》2014年第24期47-51,共5页Materials Reports

基　　金：国家自然科学基金(51271146);陕西省重点学科专项资金(ys37020203)

摘　　要：采用线性极化曲线和交流阻抗技术（EIS）结合扫描电子显微镜和能谱分析仪,研究了SRB对X100管线钢在库尔勒土壤模拟溶液中腐蚀行为的影响.实验结果表明：X100管线钢在无菌与含SRB模拟溶液中的腐蚀均属于中度腐蚀;SRB加剧了X100管线钢在库尔勒土壤中的腐蚀,但在浸泡17～35 d过程中,微生物膜与腐蚀产物结合成的复合膜会在短时间内发生急剧抑制腐蚀作用;X100管线钢在无菌模拟溶液中的腐蚀倾向为随时间延长先减小后增大,含SRB时为先减小后增大再减小,腐蚀速率在无菌与含SRB模拟溶液中时均为随时间延长先减小后增大.The effect of SRB on corrosion behavior of X100 pipeline steel in simulated Ku＇erle soil solution was investigated by polarization curve,EIS,SEM and EDS.Experiments show that corrosion of X100 pipeline steel in sterile and SRB simulated solution belong to moderate corrosion.The corrosion of X100 pipeline steel is aggravated by SRB in simulated solution,but the effect of corrosion will be dramatically suppressed soaking 17-35 days by composite films combined with biofilms and corrosion products in a short time.With time increasing the corrosion tendency of X100 pipeline steel in sterile simulated solution exhibits first decrease and then increase while SRB exhibits first decrease and then increase and decrease again.With time increasing the corrosion rate of X100 pipeline steel in sterile and SRB simulated solution all exhibit first decrease and then increase.

关 键 词：X100管线钢 模拟溶液 微生物腐蚀 腐蚀速率 

分 类 号：TG172[金属学及工艺—金属表面处理]