A two-step surface treatment, combining fluoride pretreatment and anodic electrophoresis deposition of waterborne acrylic resin, for Mg-Li-Al-Ce alloy

被引：12
作者：
Ma, Yibin [1 ]
Li, Ning [1 ]
Li, Deyu [1 ]
Zhang, Milin [2 ]
Huang, Xiaomei [2 ]
机构：
[1] Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Peoples R China
[2] Harbin Engn Univ, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Peoples R China
来源：
MATERIALS LETTERS | 2013年 / 90卷
关键词：
Metals and alloys; Anticorrosion; Thick films; Fluoride film; Waterborne acrylic resin; Electrophoresis coating; AZ91D MAGNESIUM ALLOY; CORROSION PROTECTION; COATINGS; FILM;
D O I：
10.1016/j.matlet.2012.07.053
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to improve the corrosion resistance of Mg-Li-Al-Ce alloy. A new two-step surface treatment, combining fluoride pretreatment in hydrofluoric acid (HF) solution and anodic electrophoresis in waterborne acrylic resin solution, is developed for Mg-Li-Al-Ce alloy. The results of scanning electron microscopy with energy dispersion spectroscopy show that a 6 mu m thick fluoride film is formed on the Mg-Li-Al-Ce alloy. A compact, uniform and 56 mu m thick waterborne acrylic resin coating is formed on the fluoride-coated alloy. The results of electrochemical measurements show that the double-layer coating improves the corrosion resistance of Mg-Li-Al-Ce alloy. (c) 2012 Published by Elsevier B.V.
引用
收藏
页码：11 / 13
页数：3
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