S31655奥氏体不锈钢在湿法磷酸中的腐蚀行为

张建斌, 田欢, 欧阳明辉, 郝汀

Corrosion Behavior of Austenitic Stainless Steel S31655 in a Simulated Wet Process Phosphoric Acid Solution

ZHANG Jianbin, TIAN Huan, OUYANG Minghui, HAO Ting

表3 S31655在不同温度下在湿法磷酸中的EIS拟合参数

Table 3 EIS fitting parameters of S31655 in wet process phosphoric acid at different temperatures

T / oC L / H·cm2 RS / Ω·cm2 Q / Ω-1·cm-2·Sn n R1 / Ω·cm2 C / F·cm-2 R2 / Ω·cm2 25 1.17 × 10-6 1.74 5.58 × 10-5 0.89 7.57 × 103 3.09 × 10-4 2.29 × 103 40 1.17 × 10-6 1.59 6.36 × 10-5 0.91 2.81 × 103 1.22 × 10-3 5.23 × 102 60 1.05 × 10-6 1.26 6.81 × 10-5 0.92 1.96 × 103 5.55 × 10-4 4.94 × 102 80 1.11 × 10-6 1.15 7.15 × 10-5 0.92 1.19 × 102 3.49 × 10-4 4.42 × 102