Ce(NO3)2浓度及硅酸盐封孔处理对高铁枕梁用Mg-Zn-Y-Ca合金表面钙系磷化膜的影响

周殿买, 姜磊, 王美婷, 梁洪嘉, 肖云龙, 郑黎, 于宝义

Effects of Ce(NO3)2 Concentration and Silicate Sealing Treatment on Calcium Phosphating Film on Surface of Mg-Zn-Y-Ca Alloy for High Speed Railway Corbel

ZHOU Dianmai, JIANG Lei, WANG Meiting, LIANG Hongjia, XIAO Yunlong, ZHENG Li, YU Baoyi

表4 不同Ce(NO3)2浓度下钙系磷化试样的电化学阻抗拟合结果

Table 4 EIS fitting results of calcium phosphating samples at different concentrations of Ce(NO3)2

Concentration / g·L-1 Rs / Ω·cm2 Ydl / μΩ-1·cm-2·s-1 ndl Rct / Ω·cm2 Yf / μΩ-1·cm-2·s-1 nf Rf / Ω·cm2 0 30 18.5 0.86 484.4 13.4 0.82 2359 0.4 31.2 17.1 0.85 488 12.9 0.86 2462 0.8 200.4 11.6 0.36 600.4 3.1 0.84 3620 1.2 210.4 14.1 0.36 560.8 8.9 0.87 2906 1.6 180.4 15.5 0.33 532 10.6 0.77 2555 2.0 68.8 20.1 0.66 442 14.0 0.90 2316