高志恒.镁合金的腐蚀特性及防护技术[J].表面技术,2016,45(3):169-177.
GAO Zhi-heng.Corrosion Characteristic and Protection Techniques for Mg Alloys[J].Surface Technology,2016,45(3):169-177 |
| 镁合金的腐蚀特性及防护技术 |
| Corrosion Characteristic and Protection Techniques for Mg Alloys |
| 投稿时间：2015-10-14 修订日期：2016-03-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2016.03.028 |
| 中文关键词: 镁合金 耐蚀性 腐蚀机理 表面处理 有机涂层 金属涂层 |
| 英文关键词:Magnesium alloy Corrosion resistance Corrosion mechanism Surface treatment Organic coating Metal coating |
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| 中文摘要: |
| 镁合金作为最轻的金属结构材料,在汽车、3C、国防军工、航空航天等领域具有广阔的应用前景,但耐蚀性较差是其大规模应用的瓶颈。本文介绍了镁合金的腐蚀机理,包括全面腐蚀、局部腐蚀、电偶腐蚀等,以及影响镁合金耐腐蚀的因素，根据不同介质中的具体腐蚀情况，对影响镁合金腐蚀的三大因素作了重点介绍，从而总结出提高镁合金防腐性能的两个研究方向，一是改善镁合金的本征耐蚀性，即通过优化合金成分，改善镁合金的微观组织等方式提高机体材料的耐蚀性；二是采用表面防护处理技术，通过表面防护层对基体进行保护，隔离腐蚀介质与基体。详细综述了净化合金成分、开发新型耐蚀镁合金、改善镁合金的表层微观组织等提高镁合金本征耐蚀性的方法，以及有机/聚合物，金属/化合物镁合金耐蚀涂层的研究现状。最后指出了镁合金防腐技术研究过程中存在的问题和今后的发展方向。 |
| 英文摘要: |
| Magnesium alloy is the lightest metallic structural material, and has broad application prospects in automobile, 3C, national defence, aerospace and so on. However, the poor anti-corrosion property has been becoming the bottleneck for its large-scale applications. The corrosion mechanisms of comprehensive corrosion, local corrosion and galvanic corrosion etc. of magnesium alloys are elucidated in the paper. Based on magnesium alloy’s corrosion resistance in different medium,that the main three corrosion factors of magnesium alloys are introduced,we summarized two study direction to improve magnesium alloy’s corrosion resistance:one is to improving magnesium alloy’s Proper corrosion resistance, which is Optimization of alloy composition,improving magnesium alloy’s microstructure,this way is to improving the basis materials. The other way is to use Surface protection treatment technology, by using protective coatings to protect the basis materials, seperate the basis materials and corrosion medium. Purification magnesium alloy’s microstructure、inventing new kings of anti-corrosion magnesium alloy、improving magnesium alloy’s surface microstructure, etc. The ways such as organic polymerization content,metallic compound coating to improve the intrinsical anti-corrosion properties and the present situation of corrosion resistance coatings for magnesium alloys are reviewed in detail. Furthermore, some current existing problems on the corrosion protection technologies of magnesium alloys and the future development orientation are stated briefly． |
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