022Cr25Ni7Mo4N双相不锈钢选择性腐蚀行为与两相组织的关系研究

丰涵,宋志刚,吴晓涵,李惠,郑文杰,朱玉亮

Relationship Between Selective Corrosion Behavior and Duplex Structure of 022Cr25Ni7Mo4N Duplex Stainless Steel

Han FENG,Zhigang SONG,Xiaohan WU,Hui LI,Wenjie ZHENG,Yuliang ZHU

表1 两种双相不锈钢极化曲线分析结果

Table 1 Results of polarization curves of two duplex stainless steels

Steel Ecorr / mV Eb / mV Ip / μA·cm-2 El / mV Eh / mV ΔE / mV 022Cr25Ni7Mo4N-sample 1 -330 930 7.31 -287 -236 51 022Cr25Ni7Mo4N-sample 2 -327 950 22.34 -294 -238 56 022Cr22Ni5Mo3N-sample 1 -363 945 68.39 -323 -216 107 022Cr22Ni5Mo3N-sample 2 -368 940 111.70 -332 -212 120