摘要
采用电化学阻抗谱(EIS)及动电位扫描技术研究了温度和pH值对X80管线钢在库尔勒土壤中的腐蚀行为,并利用金相显微镜观察了不同温度及pH值下的腐蚀形貌。结果表明:X80管线钢在库尔勒土壤环境中会形成一层保护性较好的钝化膜,且随着温度的升高,钝化膜稳态电流增大;而膜电阻及扩散电阻则随介质pH值的增强而减小,X80钢的腐蚀速率随之减小。
The corrosion behavior of X80 pipeline steel in Korla soil was studied by electrochemical impedance spectroscopy （EIS） and dynamic potential scanning technique.The corrosion morphology of XS0 pipeline steel in Korla soil was observed by metallographic microscope.The The results show that X80 pipeline steel will form a protective film with good protection in Korla soil environment, and the steady state current increases with the increase of temperature, while the membrane resistance and diffusion resistance will increase with the medium the corrosion rate of X80 steel decreases with the increase ofpH value.
出处
《化工设计通讯》
CAS
2017年第12期16-16,共1页
Chemical Engineering Design Communications
