Hydrophobic epoxy resin coating with ionic liquid conversion pretreatment on magnesium alloy for promoting corrosion resistance

作     者：Liting Guo Changdong Gu Jie Feng Yongbin Guo Yuan Jin Jiangping Tu Liting Guo;Changdong Gu;Jie Feng;Yongbin Guo;Yuan Jin;Jiangping Tu

作者机构：School of Materials Science and EngineeringState Key Laboratory of Silicon MaterialsZhejiang UniversityHangzhou310027China Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang ProvinceHangzhou310027China College of Materials Science&EngineeringZhejiang University of TechnologyHangzhou310014China Zotye Automobile Co.LtdHangzhou310018China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2020年第37卷第2期

页      面：9-18页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported financially by the Natural Science Foundation of Zhejiang Province(No.LY19B030008) the National Key Research and Development Program of China(No.2016YFF0204300) 

主　　题：Mg alloy Deep eutectic solvent Corrosion resistance Double layered hybrid coating 

摘      要：A hydrophobic epoxy resin coating with an environmental-friendly deep eutectic solvent(DES)-based conversion pretreatment was proposed to enhance the corrosion resistance of magnesium *** hydrophobic epoxy resin coatings on the AZ31B magnesium alloy with and without the DES-based conversion pretreatment were thoroughly *** is found that the DES-based conversion film on the AZ31B magnesium alloy is mainly composed of MgH2,MgO and ***,the conversion film possesses porous structure,which provides more anchor points for the following epoxy resin ***,without the DES-conversion pretreatment,the epoxy resin is difficult to be attached on the substrate during the dip-coating *** double layered hybrid coating system promotes the corrosion resistance of the magnesium alloys significantly,which can be ascribed to the unique architecture and component including the hydrophobicity of the surface layer,the dense and interlocked epoxy resin,and the corrosion resistant DES-based conversion pretreatment.