AZ31B镁合金挤压管材快速微弧氧化工艺  

Rapid Micro-arc Oxidation Process for AZ31B Magnesium Alloy Extruded Tube

作　　者：陈燕飞[1] 刘洪涛[1,2] 周吉学 宋晓村[1] 杨院生 

机构地区：[1]山东省科学院新材料研究所,山东济南250014 [2]山东省轻质高强金属材料省级重点实验室(筹),山东济南250014 [3]山东省汽车轻量化镁合金材料工程技术研究中心,山东济南250014 [4]中国科学院金属研究所,辽宁沈阳110016

出　　处：《热加工工艺》2018年第2期185-187,194,共4页Hot Working Technology

基　　金：国家重点研发计划(2016YFB0701200)

摘　　要：以AZ31B挤压镁合金为研究对象,探讨了快速微弧氧化工艺对氧化膜质量的影响。结果表明,采用简单电解液配方、大电流密度、短时间的工艺参数,可实现AZ31B挤压镁合金管材的快速微弧氧化处理。粗糙的基体表面能实现自平整,氧化膜呈现规则致密的火山口形貌。此外,该工艺氧化处理时间相比传统工艺缩短到2-3 min,可获得6μm以上的氧化膜层。Taking extruded AZ31 B magnesium alloy as research object, and the influences of rapid MAO process on the quality of oxide film were discussed. The results show that the rapid micro-arc oxidation treatment on the surface of AZ31 B alloy extruded tube can be fulfilled under the process parameters of simple electrolyte formula and but high density current for a short time. The rough base metal can achieve self-leveling, and the oxidation layer shows a regular and compact crater morphology. What＇s more, the oxidation time to obtain oxide film with the thickness above 6 μm by the rapid process can be shorten to 2-3 min compared with tradition micro-arc oxidation process.

关 键 词：微弧氧化 镁合金 氧化膜 陶瓷层 

分 类 号：TG178[金属学及工艺—金属表面处理]