铝合金表面陶瓷膜层形成机理
来源期刊：中国有色金属学报2000年第6期
论文作者：刘兆晶 左洪波 束术军 李凤珍
文章页码：859 - 863
关键词：铝合金； 陶瓷膜层； 等离子体；机理
Key words：aluminum alloy; ceramic coating; plasma; mechanism
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γ-Al2O3, 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。
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 γ-Al2O3, 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.
