管线钢在酸性环境中的腐蚀行为  

Corrosion Behavior of Pipeline Steel in Acidic Environments

作　　者：杨全毅 张朝阳 王永虎 底国彬 王娟 杜明俊 左景辉[2] 韩恩厚[2] YANG Quanyi;ZHANG Zhaoyang;WANG Yonghu;DI Guobin;WANG Juan;DU Mingjun;ZUO Jinghui;HAN Enhou(China Petroleum Engineering and Construction North China Company,Renqiu 062522,China;Institute of Metals,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]中国石油工程建设有限公司华北分公司,任丘062500 [2]中国科学院金属研究所,沈阳110016

出　　处：《腐蚀与防护》2022年第10期33-37,共5页Corrosion & Protection

摘　　要：选用地面集输常用管线钢L245N和L450,通过浸泡腐蚀和慢应变速率试验,研究了其在不同试验条件下的腐蚀速率和应力腐蚀敏感性,分析了腐蚀机理和影响因素。结果表明,高P_(CO_(2))/P_(H_(2)S)、中等Cl^(-)含量(7.4%)、60℃条件下,两种管线钢的腐蚀速率大,应力腐蚀敏感性高。The commonly used pipeline steels L245 N and L450 for ground gathering and transportation were selected, and their corrosion rates and stress corrosion susceptibility under different test conditions were studied through immersion corrosion and slow strain rate tests, and the corrosion mechanism and influencing factors were also analyzed. The results showed that under the conditions of high P_(CO_(2))/P_(H_(2)S), medium Cl^(-) content(7.4%) and 60 ℃, the corrosion rates of the two pipeline steels were relatively great and the stress corrosion sensitivity was high.

关 键 词：H_(2)S/CO_(2)腐蚀 L245N钢 L450钢 分压比 应力腐蚀 

分 类 号：TG172[金属学及工艺—金属表面处理]