表面状态对TC4钛合金的耐蚀性影响

刘星, 冉斗, 孟惠民, 李全德, 巩秀芳, 隆彬

Effect of Surface State on Corrosion Resistance of TC4 Ti-alloy

LIU Xing, RAN Dou, MENG Huimin, LI Quande, GONG Xiufang, LONG Bin

表3 未处理的TC4钛合金及喷丸处理后在3.5%NaCl溶液中的电化学阻抗拟合分析结果

Table 3 Fitting results of EIS of TC4 Ti-alloy without and with CSSP, GSP and CSP treatment in 3.5%NaCl solution

Sample Rs / Ω·cm2 Q1 / Ω-1·cm-2·sn n1 R1 / Ω·cm2 Q2 / Ω-1·cm-2·sn n2 R2 / Ω·cm2 χ2 TC4 Ti-alloy 28.93 5.99×10-6 0.8853 2.38 1.59×10-5 0.9987 8.88×106 3.06×10-5 CSSP 25.80 1.99×10-5 0.8757 221 2.88×10-6 0.9495 3.71×106 6.58×10-5 GSP 24.86 1.93×10-5 0.8699 20.4 9.39×10-6 0.9151 2.56×106 1.23×10-5 CSP 27.43 2.96×10-5 0.8656 135.2 4.55×10-6 0.9016 2.07×106 4.99×10-5