X70钢在原状污染土壤中的腐蚀行为  

Corrosion Behavior of X70 Pipeline Steel in Undisturbedly Polluted Soil

作　　者：余晓鹏[1] 张付宝[1] 孙成[2] 

机构地区：[1]四川理工学院材料与化学工程学院,自贡643000 [2]中国科学院金属研究所金属腐蚀与防护国家重点实验室,沈阳110016

出　　处：《腐蚀与防护》2010年第1期40-41,共2页Corrosion & Protection

摘　　要：利用极化曲线、电化学阻抗、扫描电镜、能谱等方法,研究了X70钢在沈阳市郊污染土壤中的腐蚀行为规律。结果表明,X70钢在原状污染土中腐蚀过程的阻抗谱图为偏心弥散单一容抗弧;腐蚀产物的表面存在轻微的裂痕,且成分复杂,O元素的含量高达16.56%。Corrosion behavior of X70 pipeline steel in undisturbedly polluted soil was studied by using polarization curve technique, electrochemical impedance spectroscopy（EIS）, scanning electron spectroscopy （SEM）, and EDS. The results of EIS spectra exhibited single capacitive loop model. Slight fissure could be found on the surface of XTO pipeline steel. The elements of corrosion products were complex, and the content of O element reached 16.56%.

关 键 词：污染土 交流阻抗 腐蚀 

分 类 号：TG172.4[金属学及工艺—金属表面处理]