温度和pH对X80钢在抚顺土壤模拟溶液中腐蚀行为的影响  

Effects of Temperature and pH on the Corrosion Behavior of X80 Steel in Fushun Soil Simulation Solution

作　　者：张云霞 张煦涵 王玲[2] 梁禹财 ZHANG Yunxia;ZHANG Xuhan;WANG Ling;LIANG Yucai(College of Science,Liaoning Petrochemical University,Fushun Liaoning 113001,China;College of Mechanical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学理学院,辽宁抚顺113001 [2]辽宁石油化工大学机械工程学院,辽宁抚顺113001

出　　处：《当代化工》2024年第7期1580-1584,共5页Contemporary Chemical Industry

基　　金：2021年辽宁省教育厅基本科研项目(项目编号:LJKZ0388);2022年辽宁省大学生创新创业训练计划项目(项目编号:S202210148012)。

摘　　要：X80钢在中国石油天然气输送管道中已经得到大量使用,土壤腐蚀是影响其安全运行的一个重要因素。通过动电位极化、电化学阻抗等方法,考察了温度和溶液p H对X80钢及其焊缝在抚顺土壤模拟溶液中的腐蚀行为。结果表明:随着温度升高,X80钢的腐蚀速率逐渐增大。随着土壤模拟溶液p H的增加,X80钢的腐蚀速率逐渐减小。这主要与温度和p H影响着溶液的电导率和溶解氧有关。X80 steel has been widely used in China's oil and gas transmission pipelines,and soil corrosion is an important factor affecting its safe operation.This article investigated the corrosion behavior of X80 steel and its welds in Fushun soil simulated solution under temperature and solution pH values through methods such as potentiodynamic polarization and electrochemical impedance.The results indicated that as the temperature increased,the corrosion rate of X80 steel gradually increased.As the pH of the soil simulation solution increased,the corrosion rate of X80 steel gradually decreased,and this was mainly related to the influence of temperature and pH value on the conductivity and dissolved oxygen of the solution.

关 键 词：X80管线钢 温度 PH 耐蚀性 

分 类 号：TQ153.2[化学工程—电化学工业]