循环水中氯离子含量对碳钢腐蚀行为影响规律的研究  

EFFECT OF CHLORIDE ION CONTENT IN CIRCULATING WATER ON THE CORROSION BEHAVIOR OF CARBON STEEL

作　　者：吕胜杰[1,2] 程学群[1] 段振国[2] 李晓刚[1] 

机构地区：[1]北京科技大学腐蚀与防护中心,北京100083 [2]中国石化石家庄炼化分公司

出　　处：《石油炼制与化工》2011年第3期84-87,共4页Petroleum Processing and Petrochemicals

基　　金：国家高技术研究发展863计划(No.2009AA063405-04)

摘　　要：采用实验室浸泡及电化学实验方法,研究了循环水模拟溶液中Cl^-含量对20号和08碳钢腐蚀的影响规律。结果表明,随着Cl^-含量的升高,20号和08碳钢的耐腐蚀性能均下降;当Cl^-含量不超过750μg/g时,20号和08碳钢在模拟循环水中的耐蚀性相当;当Cl^-含量超过750μg/g时,08碳钢比20号碳钢具有更优异的耐蚀性。The effect of chloride ion content in simulated circulating water on the corrosion behavior of 20^# carbon steel and 08 carbon steel was investigated by means of laboratory immersion and electro- chemical methods. The results showed that with the increase of chloride ion content, the corrosion resistance of both 20^# and 08 carbon steel materials decreased. When the chloride ion content was less than 750 μg/g,corrosion resistance performance of the two materials in the simulation solution were similar; however,when the chloride ion content was more than 750 μg/g,08 carbon steel exhibited superior corrosion resistance in simulation solution as compared with 20 ^# carbon steel.

关 键 词：腐蚀 循环水 极化曲线 交流阻抗 

分 类 号：TE986[石油与天然气工程—石油机械设备]