酸洗工艺对不同锡量二次冷轧镀锡板耐蚀性能的影响

周谦永, 赖漾, 李谦

Effect of Pickling Process on Corrosion Resistance of Double Cold-reduced Tinplate with Different Tin Coating Masses

ZHOU Qianyong, LAI Yang, LI Qian

表1 动电位极化曲线的拟合电化学参数

Table 1 Fitting electrochemical parameters of potentiodynamic polarization curves in Fig.3

Coating mass / g·m-2 φcorr / V (vs.SCE) Icorr / A·cm-2 βa / V·dec-1 βc / V·dec-1 Rp / Ω·cm2 EP-1.1 -0.46 1.86 × 10-8 0.06 0.13 9.87 × 105 CP-1.1 -0.49 3.01 × 10-8 0.05 0.19 6.12 × 105 EP-5.6 -0.52 5.69 × 10-9 0.20 0.33 9.60 × 106 CP-5.6 -0.53 8.78 × 10-9 0.34 0.26 7.23 × 106 EP-11.2 -0.57 6.79 × 10-9 0.24 0.42 9.68 × 106 CP-11.2 -0.57 7.78 × 10-9 0.27 0.44 9.36 × 106