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

作者：Ma, Yibin; Li, Ning^*; Li, Deyu; Zhang, Milin; Huang, Xiaomei

来源：Materials Letters, 2013, 90: 11-13.

DOI：10.1016/j.matlet.2012.07.053

• Metals and alloys
• Anticorrosion
• Thick films
• Fluoride film
• Waterborne acrylic resin
• Electrophoresis coating

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.

• 出版日期2013-1-1
• 单位哈尔滨工业大学; 哈尔滨工程大学