2A97铝锂合金典型防护涂层热带海洋大气环境腐蚀老化行为

贾静焕, 刘明, 骆晨, 孙志华, 赵明亮, 李晓刚

Corrosion and Aging Behavior of 2A97 Al-Li Alloy with Typical Protective Coatings in Tropical Marine Atmosphere Environment

JIA Jinghuan, LIU Ming, LUO Chen, SUN Zhihua, ZHAO Mingliang, LI Xiaogang

表3 涂层2 EIS拟合结果

Table 3 EIS fitting results of coating 2

Period / a Rs / Ω·cm2 Qc (Qp) / Ω-1·cm-2s-n nc (np) Rc (Rp) / Ω·cm2 Qdl / Ω-1·cm-2s-n ndl Rct / Ω·cm2 W / Ω·cm2 0.5 6213 1.31×10-7 0.6599 8.41×107 --- --- --- --- 1 6746 5.12×10-8 0.8067 2.05×107 3.82×10-8 0.7126 2.44×108 --- 2 1000 3.70×10-7 0.684 1.05×104 2.53×10-5 0.7708 7.81×105 6.22×106 2.5 10 6.79×10-8 0.819 1.14×104 2.20×10-5 0.4982 1.92×106 ---