摘要
采用失重法研究了二氧化碳腐蚀环境中碳钢/不锈钢(N80/S31803)电偶对在高温高压下的电偶腐蚀行为,探讨了温度、压力及面积比对电偶腐蚀的影响。结果表明:常压下,随着温度的升高,CO2腐蚀环境中电偶对阳极(N80钢)的腐蚀速率有一个极大值;腐蚀速率的对数值与面积比的对数值呈线性关系。CO2分压为2.5MPa、阴阳极面积比≤4时,电偶对阳极(N80钢)的腐蚀速率在不同温度下分别存在一个极大值和一个极小值;腐蚀速率都随着面积比的增大而增大。
The corrosion behavior of N80 steel /S31803 stainless steel galvanic couple in CO_2-containing corrosive environment at high temperature and high pressure was studied using weight loss method.Thus-the effects of temperature,pressure,and area ratio on the galvanic corrosion of the carbon steel/stainless steel galvanic couple were investigated.Results indicated that the anode of the couple(N80 steel)had a maximum corrosion rate at a certain elevated temperature under normal pressure.The logarithmic value of the corrosion rate linearly corresponded to that of the area ratio.Besides,the N80 steel as the anode of the galvanic couple showed a maximum corrosion rate and a minimum one as well at certain elevated temperatures under a CO_2 partial pressure of 2.5 MPa,while the corrosion rale of the N80 steel at different temperatures increased with increasing area ratio.
出处
《材料保护》
CAS
CSCD
北大核心
2008年第2期60-62,共3页
Materials Protection
关键词
失重法
电偶腐蚀
二氧化碳
高温高压
weight loss method
galvanic corrosion
CO_2
high temperature and high pressure
