摘要
本文采用浸渍提拉层层自组装法在氢氧化钠水热处理后的AZ31镁合金表面制备得到了KH550/SiO_(2)复合涂层,通过扫描电镜(SEM)、红外光谱(FTIR)、X射线光电子能谱(XPS)等手段表征了复合涂层的形貌和组成。结果表明,KH550/SiO_(2)复合涂层表面平整且均匀,表面上的二氧化硅为均匀的球形结构,粒径为50~200 nm。采用电化学方法研究了涂层的耐腐蚀性能。结果表明,制备的复合涂层提高了镁合金的耐腐蚀性能。
In this paper,KH550/SiO_(2)composite coatings were deposited on the surface of AZ31 magnesium alloy after sodium hydroxide hydro-thermal treatment with dip-coating layer-by-layer self-assembly method.The morphology and composition of composite coatings were characterized by scanning electron microscopy(SEM),fourier transform infrared spectroscopy(FTIR)and X-ray photoelectron spectroscopy(XPS)analysis.The results showed that the KH550/SiO_(2) composite coating surface was flat and uniform,and SiO_(2) on the surface was of spherical structure with the particle size range of 50~200 nm.The corrosion resistance of the coating was studied by electrochemical method.The results showed that the prepared composite coating can improve the corrosion resistance of AZ31 magnesium alloy.
作者
李德燕
王晓雯
张金莲
李晓露
Li Deyan;Wang Xiaowen;Zhang Jinlian;Li Xiaolu(State Key Laboratory of Plateau Ecology and Agriculture,Qinghai University,Xining 810016,China;College of Chemical Engineering,Qinghai University,Xining 810016,China)
出处
《轻金属》
北大核心
2023年第5期49-53,58,共6页
Light Metals
基金
青海大学中青年基金项目(2019-QGY-8)。
关键词
镁合金
层层自组装
硅烷偶联剂
二氧化硅
耐腐蚀性能
magnesium alloy
layer-by-layer self-assembly
silicon dioxide
corrosion resistance
