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5 3种铝合金在pH8.3的不同温度模拟海水中的极化曲线拟合参数

Table 5 Fitting results of polarization curves of Al-alloys in simulated seawater with pH8.3 at different temperatures

Al-alloy T / ℃ Ecorr / V Cathodic tafel slope / V·dec-1 Anodic tafel slope / V·dec-1 Icorr / A·cm-2 9C34 15 -0.836 0.176 0.306 8.92×10-7 25 -1.206 0.145 0.217 3.16×10-6 35 -1.290 0.092 0.549 6.57×10-5 9C37 15 -0.840 0.096 0.371 7.79×10-7 25 -1.162 0.140 0.337 1.33×10-6 35 -1.233 0.103 0.645 3.73×10-5 5083 15 -0.879 0.155 0.202 3.91×10-7 25 -1.164 0.194 0.336 1.25×10-6 35 -1.170 0.109 0.322 5.96×10-5