植酸锌的制备及其对Q235钢腐蚀行为的影响

周兰欣, 张丽萍, 汤燕, 陈柯宇, 周剑军, 师超, 邵亚薇, 刘光明

Preparation of Zinc Phytate and Its Effect on Corrosion Behavior of Carbon Steel

ZHOU Lanxin, ZHANG Liping, TANG Yan, CHEN Keyu, ZHOU Jianjun, SHI Chao, SHAO Yawei, LIU Guangming

表2 Q235钢电极在不同浸出时间的磷酸锌和植酸锌溶液中EIS拟合结果

Table 2 Fitting results of EIS of Q235 steel in zinc phosphate and zinc phytate solutions extracted for different time

Extract Extracting time / h Rs / Ω·cm2 Ct / S·cm-2·s n n Rt / Ω·cm2 η Zinc phosphate 0 5.99 6.03 × 10-4 0.81 196.91 / 1 6.77 4.80 × 10-4 0.61 389.84 49.49% 2 7.47 3.30 × 10-4 0.72 498.33 60.49% 4 7.80 1.21 × 10-4 0.67 526.72 62.62% 8 7.78 2.57 × 10-4 0.74 709.01 72.23% Zinc phytate 0 5.991 6.03 × 10-4 0.84 196.91 / 1 6.375 2.30 × 10-4 0.71 1082.00 81.80% 2 6.246 2.69 × 10-4 0.67 1942.82 89.87% 4 6.078 3.83 × 10-4 0.65 1920.91 89.98% 8 8.233 3.10 × 10-4 0.70 2122.30 90.72%