摘要
利用高温高压釜进行2Cr13不锈钢的高温高压CO2腐蚀实验,用扫描电镜(SEM)和X射线光电子谱(XPS)分析腐蚀产物膜的形貌和成分,电化学交流阻抗谱测试腐蚀产物膜对2Cr13不锈钢电极过程影响,失重法评价两种2Cr13不锈钢CO2均匀腐蚀速率．结果表明:含氮钢的腐蚀产物膜结构比较疏松,腐蚀膜中的Cr2O3被CrN和Na3CrO4部分替代,并且含有较多的Fe3O4和α-FeOOH,其膜的电阻值比不含氮的2Cr13钢的小,腐蚀速率较大．
The effect of nitrogen addition on CO2 corrosion resistance of 2Cr13 stainless steels was researched by scanning electron microscopy （SEM）, X-ray photoelectron spectroscopy （XPS）, electrochemical impedance spectroscopy （EIS） and mass loss method. The results show that the corrosion scale of the N-containing 2Cr13 steel was looser than that of the 2Cr13 steel without N, and the primary scale Cr203 was part replaced by CrN and Na3CrO4, and more Fe3O4 and α-FeOOH phases appeared. The impedance value of the N-containing 2Cr13 steel was less than that of 2Cr13 steel without N, and the general corrosion rate of the former was higher than that of the latter.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第12期1279-1284,共6页
Acta Metallurgica Sinica
基金
国家高技术研究发展计划资助项目2003AA331010~~
关键词
氮添加
2Cr13不锈钢
腐蚀产物膜
交流阻抗谱
nigrogen addition, 2Cr13 stainless steel, corrosion scale, electrochemical impedance spectroscopy
