镁合金微弧氧化表面处理技术研究进展及展望

巩锐; 侯步逸; 陈彤; 王延龙; 李兰芸; 李宏伟; 张新

doi:10.3969/j.issn.1000-6826.2021.04.0002

镁合金微弧氧化表面处理技术研究进展及展望

doi: 10.3969/j.issn.1000-6826.2021.04.0002

巩锐^1,,
侯步逸¹,
陈彤^{2, 3},
王延龙⁴,
李兰芸^{2, 3},
李宏伟⁴,
张新^{2, 3}

1.
北京北方车辆集团有限公司后勤装备公司，北京　100072
2.
新兴际华集团有限公司技术中心，北京　100070
3.
新兴际华科技发展有限公司，北京　100070
4.
北京北方车辆集团有限公司北京市特种车辆关键部件制备与评估工程技术研究中心，北京　100072

基金项目: 国家重点研发计划项目(2019YFC1511400)

详细信息

作者简介:
巩锐（1978—），男，辽宁阜新人，高级工程师。2001年毕业于沈阳理工大学机械工程专业，主要研究方向：军用履带车辆、军用挂车。研发的多款军用挂车实现了工程化应用，曾获得总后勤部科技进步二等奖。通信地址：100072北京市丰台区朱家坟五里五号，E-mail：gongrui3003@aliyun.com

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出版历程
- 刊出日期: 2021-07-29

Research Progress and Prospect of Micro Arc Oxidation Surface Treatment Technology for Magnesium Alloys

Rui GONG^1
,,
Bu-yi HOU¹,
Tong CHEN^{2, 3},
Yan-long WANG⁴,
Lan-yun LI^{2, 3},
Hong-wei LI⁴,
Xin ZHANG^{2, 3}

摘要

摘要: 镁合金具有的独特性能已在汽车、航空、航天、电子、兵工等领域广泛应用，但其极易腐蚀的缺点给设备的安全、稳定运行带来潜在的危险，甚至造成重大经济损失。本文从微弧氧化技术的研究现状着手，重点讨论了电解液体系、电参数、氧化时间、添加剂等对镁合金陶瓷膜性能的影响，进而分析了微弧氧化陶瓷膜的组成、结构特征和形成过程，并提出了镁合金微弧氧化的发展方向。

HTML全文

图 1 微弧氧化装置示意图^[10]

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图 2 微弧氧化技术发展历程图^[12]

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图 3 微弧氧化过程电流-电压关系^[14]

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图 4 微弧氧化过程示意图^[27]

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图 5 AZ91D合金微弧氧化膜层的形貌^[37]

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图 6 正常膜层与破坏膜层表面的SEM图^[44]

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图 7 不同脉冲频率下所得MAO膜的表面形貌^[46]

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图 8 微弧氧化膜层的微观形貌^[72]

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图 9 AZ31微弧氧化涂层^[74]

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表 1 微弧氧化与阳极氧化技术比较

氧化工艺	电压电流	工艺流程	处理时间/ min	最大膜层厚度/mm	工作温度/℃	氧化处理	膜层均匀性	氧化膜相结构	5%盐雾腐蚀/h	硬度/HV	孔隙率/%
微弧氧化	高压、电流密度大	易于操作	10~30	200~300	<45	化学氧化、电化学氧化等	内外表面均匀	晶态氧化物	>1000	500~ 3000	0~40
阳极氧化	低压、电流密度小	较为复杂	60~120	50~80	50~80	化学氧化、电化学氧化等	尖角类缺陷	无定形相	>300	300~ 500	>40

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