9C系列粉末冶金高耐蚀铝合金腐蚀行为研究

房豪杰, 曲华, 杨黎晖, 曾庆亚, 王丽丹, 袁宁, 侯保荣, 曹立新, 袁迅道

Corrosion Behavior of 9C Series of Powder Metallurgy Al-alloy with High Corrosion Resistance

FANG Haojie, QU Hua, YANG Lihui, ZENG Qingya, WANG Lidan, YUAN Ning, HOU Baorong, CAO Lixin, YUAN Xundao

表8 3种铝合金在25 ℃不同pH值的模拟海水溶液中的等效电路元件拟合结果

Table 8 Fitting results of EIS of three Al-alloys in simulated seawater with different pH values at 25 ℃

Al-alloy pH Rs / Ω·cm2 R1 / Ω·cm2 C1 / F·cm-2 n1 Lo / H·cm2 W / Ω-1·cm2 9C34 5.0 2.52 15120 1.229×10-5 0.8186 --- 0.392×10-3 7.0 3.49 233470 5.567×10-6 0.9535 7.575×107 --- 8.3 3.37 8689 9.012×10-6 0.9375 --- --- 9C37 5.0 1.24 17120 8.381×10-6 0.8692 4.503×105 --- 7.0 3.58 314750 5.362×10-6 0.9651 1.043×107 --- 8.3 2.79 14780 6.406×10-6 0.9624 --- --- 5083 5.0 2.21 18540 6.528×10-6 0.9045 4.316×105 --- 7.0 3.79 215760 6.141×10-6 0.9395 8.596×107 --- 8.3 3.75 17920 5.601×10-6 0.9647 --- ---