深冷处理对EH40极寒环境船用钢板的海水腐蚀性能影响

沈树阳, 王东胜, 孙士斌, 杨剔, 赵前进, 王鑫, 张亚飞, 常雪婷

Corrosion Behavior in Artificial Seawater of Subzero Treated EH40 Marine Steel Suitable for ExtremelyCold Environments

SHEN Shuyang, WANG Dongsheng, SUN Shibin, YANG Ti, ZHAO Qianjing, WANG Xin, ZHANG Yafei, CHANG Xueting

表1 极化曲线拟合结果

Table 1 Fitting results of the polarization curves of EH40 steel without and with -80 ℃ cooling treatment after 72 h immersion

Temperature / ℃ Ecorr / V Ba / mV·dec-1 Bc / mV·dec-1 Icorr / μA·cm-2 Rp / Ω·cm2 CORrate 25 -0.652 10.023 3.788 1.244 2531 1.3×10-4 -80 -0.645 9.835 2.282 3.643 985 3.8×10-4