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7 3种铝合金在不同pH的模拟海水溶液中极化曲线拟合电化学参数

Table 7 Fitting results of polarization curves of three Al-alloys in simulated seawater with different pH values at 25 ℃

Al-alloy pH Ecorr / V Cathodic tafel slope / V·dec-1 Anodic tafel slope / V·dec-1 Icorr / A·cm-2 9C34 5.0 -0.635 0.453 0.102 2.73×10-6 7.0 -0.628 0.369 0.182 4.53×10-7 8.3 -1.206 0.145 0.217 3.16×10-6 9C37 5.0 -0.641 0.259 0.056 2.17×10-6 7.0 -0.637 0.252 0.020 3.46×10-8 8.3 -1.162 0.140 0.337 1.33×10-6 5083 5.0 -0.695 0.217 0.019 1.29×10-6 7.0 -0.630 0.237 0.096 7.54×10-7 8.3 -1.164 0.194 0.336 1.25×10-6