磷酸浓度对316L不锈钢耐蚀性及钝化膜特性的影响

张媛, 张弦, 陈思雨, 李腾, 刘静, 吴开明

Effect of Phosphoric Acid Concentration on Corrosion Resistance and Passivation Film Properties of 316L Stainless Steel

ZHANG Yuan, ZHANG Xian, CHEN Siyu, LI Teng, LIU Jing, WU Kaiming

表3 316L不锈钢在不同浓度磷酸中形成的表面钝化膜中的载流子密度

Table 3 Carrier densities of passive film of 316L stainless steel formed in phosphoric acid with different concentrations

C / mol·L-1 NA / 1019·cm-3 ND / 1019·cm-3 0.1 1.47 2.06 0.2 19.96 24.60 0.5 1156.33 345.00 1 989.51 235.79 2 973.55 276.95