(1. 江西科技师范学院 江西省材料表面工程重点实验室，南昌 330013；2. 沈阳理工大学 理学院，沈阳 110168；3. 江西科技师范学院 材料科学与工程学院，南昌 330013)
摘 要:
关键字: 镁合金；微弧氧化；电解质；性能
（1. Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University,Nanchang 330013, China;2. Faculty of Science, Shenyang Ligong University, Shenyang 110168, China;3. College of Materials Science and Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China）
Abstract:The effects of four factors (Na2SiO3, C6H18O24P6, Na2CO3 and Na2B4O7) with three levels on the coating properties of micro arc oxidation formed on AZ91HP magnesium alloys were systematically studied by orthogonal experiment. The results show that the compositions and concentrations of electrolytes considerably affect the coating properties. The orders of affecting final voltage, coating thickness and corrosion resistance are separately ranked as C6H18O24P6＞Na2B4O7＞Na2SiO3＞Na2CO3, Na2B4O7＞Na2SiO3 = Na2CO3＞C6H18O24P6 and C6H18O24P6＞Na2B4O7＞Na2SiO3＞Na2CO3. The environmentally friendly process with the best corrosion resistance is Na2SiO3 8 g/L, C6H18O24P6 5 g/L, Na2CO3 25 g/L, Na2B4O7 10 g/L. There is not simple pertinence between the coating corrosion resistance and coating thickness.
Key words: magnesium alloys; micro arc oxidation; electrolyte; properties
