工业设计用AZ91D合金的表面改性层性能研究  

Study on Surface Modified Layer Properties of AZ91D Alloy for Industrial Design

作　　者：郑好 许开强[2] 秦莹[3] ZHENG Hao;XU Kaiqiang;QIN Ying(Hubei University of Technology,Wuhan 430000,China;Hubei University,Wuhan 430062,China;Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]湖北工业大学,湖北武汉430000 [2]湖北大学,湖北武汉430062 [3]武汉理工大学,湖北武汉430070

出　　处：《热加工工艺》2019年第20期90-93,97,共5页Hot Working Technology

基　　金：湖北省科技计划项目(2016CFB186)

摘　　要：采用磁控溅射和微弧氧化法在工业设计用AZ91D镁合金表面制备了不同的改性层,研究了磁控溅射和微弧氧化时间对改性层物相组成、电化学性能和耐磨性能,并分析了相应地作用机理。结果表明,磁控溅射Ti层的主要物相为α-Ti和α-Mg,经过微弧氧化处理后,改性层中还形成了Mg2SiO4相、锐钛矿型和金红石型TiO2相;磁控溅射Ti层和不同时间微弧氧化改性层的耐腐蚀性都高于AZ91D合金基材,且当微弧氧化时间为4 min时改性层的腐蚀速率最低;磁控溅射Ti层和不同微弧氧化时间下改性层的耐磨性都高于AZ91D合金基材,且在微弧氧化时间为4 min时改性层取得了最佳的耐磨性。Different modified layers were prepared on the surface of AZ91 D magnesium alloy by magnetron sputtering and microarc oxidation method. The effects of magnetron sputtering and micro arc oxidation time on the phase composition,electrochemical properties and wear resistance of the modified layer were studied, and the corresponding mechanism was analyzed. The results show that the main phases of magnetron sputtering Ti layer are α-Ti and α-Mg. After micro-oxidation treatment, Mg2SiO4 phase, anatase and rutile TiO2 phases appear in the modified layer. The corrosion resistance of magnetron sputtering Ti layer and different time microarc oxidation modified layer are higher than that of AZ91 D alloy substrate, and when the microarc oxidation time is 4 min, the corrosion rate of the modified layer is lowest. The wear resistance of the magnetron sputtering Ti layer and modified layers with different microarc oxidation time are higher than that of AZ91 D alloy substrate, and when the micro arc oxidation time is 4 min, the modified layer gets the best wear resistance.

关 键 词：AZ91D合金 磁控溅射 微弧氧化 腐蚀 磨损 

分 类 号：TG174.4[金属学及工艺—金属表面处理]