CO_(2)环境中“拉应力-温度-Cl^(-)含量”共存体系对P110钢电化学行为的影响  

Effect of “Tensile Stress-Temperature-Cl^(-) Concentration” Coexistence System on Electrochemical Behavior of P110 Steel in CO_(2) Environment

作　　者：鲍明昱 熊建嘉[2] 高健 廖柯熹 郭小阳 刘丽[4] BAO Mingyu;XIONG Jianjia;GAO Jian;LIAO Kexi;GUO Xiaoyang;LIU Li(Satety,Environmental Protection&Technology Supervision Research Institute,PetroChina Southwest Oil&Gasfield Company,Chengdu 610041,China;PetroChina Gas Storage Company,Beijing 100029,China;Petroleum Engineering School,Southwest Petroleum University,Chengdu 610500,China;School of New Energy and Materials,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中国石油西南油气田公司安全环保与技术监督研究院,成都610041 [2]中国石油天然气股份有限公司储气库分公司,北京100029 [3]西南石油大学石油与天然气工程学院,成都610500 [4]西南石油大学新能源与材料学院,成都610500

出　　处：《腐蚀与防护》2021年第11期49-55,60,共8页Corrosion & Protection

基　　金：国家科技重大专项(2016ZX05052);国家自然科学基金(51374180)。

摘　　要：参照正交试验的思路,利用电化学测试手段研究了在CO_(2)环境中"拉应力-温度-Cl^(-)含量"共存体系对P110钢电化学行为的影响。结果表明:在饱和CO_(2)环境中,共存体系各因素对P110钢电化学行为的影响强弱顺序为温度>Cl^(-)含量>拉应力;共存体系中,升高温度、增大Cl^(-)含量以及在弹性变形阶段增大拉应力都能使P110钢的电化学反应速率增大,促进P110钢CO_(2)腐蚀反应的进行。Referring to the idea of orthogonal test, the effect of "tensile stress-temperature-Cl^(-) concentration" coexistence system on electrochemical behavior of P110 steel in CO_(2)environment was investigated using electrochemical measurement. The results show that in saturated CO_(2)environment, the influence order of factors in the coexisting system on the electrochemical behavior of P110 steel was as follows: temperature > Cl^(-) concentration > tensile stress. The electrochemical reaction rate of P110 steel would be increased by increasing temperature, Cl^(-) concentration and tensile stress(below yield strength) in the coexistence system, which would promote the CO_(2)corrosion reaction of P110 steel.

关 键 词：拉应力 共存体系 P110钢 电化学行为 正交试验 

分 类 号：TG172[金属学及工艺—金属表面处理]