B30铜镍合金原始膜对其腐蚀的影响

王立芳, 商孟超, 高希钰, 刘贵昌, 孙文

Effect of Inherent Films Resulted from Manufacturing Process on Corrosion of B30 Cu-Ni Alloy

WANG Lifang, SHANG Mengchao, GAO Xiyu, LIU Guichang, SUN Wen

表5 C试样在海水中浸泡60 d后的EIS拟合结果

Table 5 Fitting parameters of EIS of C sample immersed in seawater for 60 d

Time / d Rs / kΩ·cm2 Rct / kΩ·cm2 CPE1 / 10-5 F·cm-2 n1 W / 10-4 Ω-1s-0.5 Rfin / kΩ·cm2 CPE3 / 10-5 F·cm-2 n3 0 0.014 1.17 41.68 0.72 116.8 - - - 1 0.010 8.42 20.73 0.88 - 13.32 19.96 0.62 3 0.010 19.38 30.25 0.44 - 151.1 5.87 0.77 5 0.010 22.97 27.53 0.46 - 264.7 4.65 0.80 7 0.012 26.90 9.81 0.55 - 374.3 3.95 0.84 10 0.011 25.54 9.56 0.68 - 366.9 1.91 0.76 15 0.010 26.52 3.73 0.69 - 346.9 2.99 0.91 20 0.011 28.55 10.45 0.57 - 362.0 2.17 0.71 25 0.010 28.90 12.71 0.67 - 351.0 1.82 0.80 30 0.010 27.27 8.05 0.74 - 369.0 1.74 0.83 40 0.010 30.34 6.78 0.77 - 363.0 1.13 0.81 50 0.011 27.23 6.14 0.81 - 351.0 2.01 0.87 60 0.012 29.18 4.01 0.68 - 360.3 1.55 0.88