磷酸钠浓度对40Cr钢耐蚀性能的影响

周炜龙, 郭玉冰, 胡梦茹, 沈凯杰, 杨正桓, 谢林君

Effect of Sodium Phosphate Concentration on Corrosion Resistance of 40Cr Steel

ZHOU Weilong, GUO Yubing, HU Mengru, SHEN Kaijie, YANG Zhenghuan, XIE Linjun

表2 40Cr钢在不同浓度Na3PO4下EIS的拟合结果

Table 2 Fitting results of EIS data of 40Cr steel in Na3PO4 solution at different concentrations

C / mol·L-1 Rs / Ω·cm2 Fitting error / % Rf / Ω·cm2 Fitting error / % Rct / Ω·cm2 Fitting error / % R / Ω·cm2 1 × 10-4 1585 0.457 568 8.742 2717 1.803 3285 5 × 10-4 1194 0.609 2174 6.920 3582 1.662 5756 1 × 10-3 722 0.618 2.931 × 104 2.255 3.010 × 104 4.040 5.941 × 104 5 × 10-3 278 0.831 - - 8.341 × 104 2.036 8.341 × 104 1 × 10-2 105 0.688 - - 1.032 × 105 2.409 1.032 × 105