新型高强稀土Al-Zn-Mg-Cu-Sc铝合金的阳极氧化及其抗腐蚀性能研究

王英君, 刘洪雷, 王国军, 董凯辉, 宋影伟, 倪丁瑞

Investigation of Anodic Film on a Novel RE-containing Al-Alloy Al-Zn-Mg-Cu-Sc

WANG Yingjun, LIU Honglei, WANG Guojun, DONG Kaihui, SONG Yingwei, NI Dingrui

表1 阻抗谱的拟合结果

Table 1 Fitting results of EIS plots

Sealing-pore method Rs / Ω·cm2 Qp / Ω-1·cm-2·s-n np Rp / kΩ·cm2 Qb / Ω-1·cm-2·s-n nb Rb / kΩ·cm2 Boiling water 25.3 1.78×10-7 0.76 17.3 1.08×10-6 0.94 8190 Fluozirconate 32.7 1.34×10-7 0.79 3.1 3.42×10-6 0.83 217.9 Cerate 28.8 1.41×10-7 0.78 2.2 5.74×10-6 0.81 1106