表面处理工艺对铝合金防腐涂层性能影响研究  

Effect of Surface Treatment Process on Performance of Anticorrosive Coatings on Aluminum Alloy

作　　者：黄从树[1,2] 叶章基[1,2] 邓玉[1] 王晶晶[1,2] 谢志鹏[1,2] 任润桃[1,2] 

机构地区：[1]中国船舶重工集团公司第七二五研究所厦门分部,福建厦门361101 [2]海洋腐蚀与防护国防科技重点实验室,福建厦门361101

出　　处：《涂料工业》2014年第9期6-10,共5页Paint & Coatings Industry

摘　　要：通过拉开法附着力测试、耐海水浸泡试验及电化学阻抗试验等方法,研究了铝合金不同表面处理工艺对防腐涂层耐蚀性能的影响.研究结果表明：打磨和钝化处理能大幅提高防腐涂层的附着力,附着力可达16～ 20 MPa,但涂层的模拟电阻值较低,海水浸泡5个月后,仅为（0.8～ 1.3） x10^8Ω;阳极氧化处理基材表面防腐涂层的附着力较低,仅为9 MPa,但基材的耐蚀性能有大幅提高,海水浸泡5个月后,涂层模拟电阻值仍可达（1.0～ 1.3）x10^9 Ω.以上研究结果可为铝合金基材表面处理工艺的选择提供参考依据.The effect of surface treatment process on the corrosion resistance of aluminumalloy substrate is analyzed via pull-off test for adhesion, seawater immersion test and electro-chemical impedance spectroscopy. The results show that grinding and passivation treatment cangreatly improve the adhesion of anticorrosive coatings on substrate （approx. 16 - 20 MPa）. Butthe simulation resistance of the coatings is reduced to （0.8～ 1.3） x10^8Ω after five-monthsseawater immersion test. However, the adhesion of anticorrosive coatings on anodizingtreatment aluminum alloy substrate is only 9 MPa but the corrosion resistance of the substrateis significantly improved. Furthermore, the simulation resistance of the coatings can be in-creased up to （1.0～ 1.3）x10^9 Ω after five-months seawater immersion. These results canserve as reference for surface treatment process of aluminum alloy substrate.

关 键 词：铝合金 防腐涂层 表面处理 

分 类 号：TQ639.1[化学工程—精细化工]