铝合金表面微弧氧化涂层制备工艺  

Micro-arc Oxidation Coating Preparation Process For Aluminum Alloy Surfaces

作　　者：全伟[1] 胡正前[1] Chernega.S.M. 马晋[1] 

机构地区：[1]武汉理工大学机电学院,湖北武汉430070 [2]乌克兰国立技术大学工程物理系,基辅03056

出　　处：《电镀与精饰》2009年第11期39-43,共5页Plating & Finishing

基　　金：科技部国际科技合作项目(2008-No.CU08-10)

摘　　要：用微弧氧化技术对铝合金表面进行强化处理,利用正交试验设计优化试验方案,按五因素四水平得到正交表,合理安排微弧氧化试验,达到优化工艺条件的目的;并用综合平衡法评价各因素对陶瓷膜硬度和厚度影响的主次顺序和最优水平。结果表明:铝合金微弧氧化陶瓷膜的硬度和厚度受各因素水平的影响显著,其中硅酸钠的质量浓度对陶瓷膜硬度和厚度的影响最大;在最优工艺条件下,陶瓷膜致密层硬度达1 700 HV,膜层总厚度达到约200μm。Aluminum alloy surface was strengthened by micro-arc oxidation technology. The orthogonal design method was employed for optimal experimental scheme. The orthogonal table was gained according to five elements and four levels and the experiments were arranged accordingly, from which optimal experimental process were achieved. Besides, the optimum level and primary and secondary order of various factors, which exert influences on the hardness and thickness of ceramic coating, were estimated by the integrated balance method. The results showed that the hardness and thickness are affected observably by various factors, among which the concentration of N%SiO3 is most important. Especially under the optimal technological conditions, ceramic coating can reach 1 700HV in hardness and 200μm in thickness respectively.

关 键 词：微弧氧化 正交试验 工艺设计 陶瓷膜 铝合金 

分 类 号：TG174.45[金属学及工艺—金属表面处理]