(哈尔滨理工大学 材料科学与工程学院， 哈尔滨 150080)
摘 要: 用等离子体增强电化学表面处理技术对铝合金表面进行陶瓷化处理，在铝合金表面获得陶瓷膜层。采用X射线衍射、X光电子能谱、扫描电镜、透射电镜等测试手段对陶瓷膜层进行了研究。结果表明：该陶瓷膜层由γAl2O3, AlPO4和CoO等组成；通过对陶瓷膜层的表面形貌和显微结构观察及分析，发现陶瓷膜层形成过程是一个离子运动，表面层不断被击穿形成熔融区，处理体系中的电解质不断向熔融区运动、成核并迅速烧结的过程；陶瓷膜层呈现岛屿状；陶瓷膜层与基体之间为冶金结合。
关键字: 铝合金； 陶瓷膜层； 等离子体；机理
（School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, P.R.China）
Abstract:The ceramic coatings were developed byplasma enhanced electrochemical reaction technology. The surface ceramic coating on aluminum alloy was investigated by means of XRD, XPS, SEM and TEM. The phase structure of the ceramiccoating includes γAl2O3, AlPO4 and CoO. The forming process of the ceramiccoating includes iron movement, melting of surface layer, movement of electrolyte towards the meltingzone and the final nucleusforming and sintering. The ceramic coating looks like islands and islets. The ceramic coating and the matrix are integrated metallurgically.
Key words: aluminum alloy; ceramic coating; plasma; mechanism
