Electroplated super-hydrophobic Zn−Fe coating for corrosion protection on magnesium alloy  

电镀超疏水锌铁涂层对镁合金的腐蚀防护

作　　者：Xue MENG Jin-lei WANG Jie ZHANG Bao-long NIU Xiang-hua GAO Hong YAN 孟雪;王晋磊;张杰;牛宝龙;高向华;晏泓(太原理工大学材料科学与工程学院,太原030024;太原理工大学新材料界面科学与工程教育部重点实验室,太原030024)

机构地区：[1]College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China [2]Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China

出　　处：《Transactions of Nonferrous Metals Society of China》2022年第10期3250-3258,共9页中国有色金属学报（英文版）

基　　金：supports from the National Natural Science Foundation of China(No.22178242).

摘　　要：A superhydrophobic Zn−Fe alloy coating was prepared on the surface of a reactive magnesium alloy using a simple,low-cost,eco-friendly method.Firstly,the Zn−Fe coating was obtained in a neutral glycerol Zn−Fe plating solution,which is green,compositionally stable,and non-corrosive to the equipment.And then the superhydrophobic surface with a flower-like microstructure was obtained by grafting myristic acid onto the Zn−Fe coating via a chelation reaction.The water contact angle was>150°and the rolling angle was 3°−4°.The corrosion rate of the two groups of superhydrophobic magnesium alloy samples with electrodeposition time of 30 and 50 min,respectively,was reduced by about 87%compared to that of the bare magnesium alloy.The prepared superhydrophobic coatings exhibit high performance in self-cleaning,abrasion resistance,and corrosion resistance.采用简单、低成本、环保的方法在化学性质活泼的镁合金表面制备超疏水的Zn−Fe合金涂层。首先,在中性甘油Zn−Fe电解液中得到Zn−Fe涂层。该电镀液绿色、成分稳定且对设备无腐蚀性。随后,通过螯合反应改性将肉豆蔻酸接枝到Zn−Fe涂层表面,获得具有花状微观结构的超疏水表面。制备的超疏水涂层的水接触角>150°,滑动角为3°~4°。与裸镁合金相比,电沉积时间分别为30和50 min的两组超疏水镁合金样品的腐蚀速率降低了约87%。这表明所制备的超疏水涂层表现出优异的自洁性、耐磨性和耐腐蚀性。

关 键 词：Zn−Fe coating Mg alloy contact angle sliding angle SELF-CLEANING abrasion resistance 

分 类 号：TQ153.2[化学工程—电化学工业]