摘要
镁合金具有密度小、阻尼减振降噪性好和导电性好等优点,是目前工程应用中最轻的金属结构材料。但镁合金电极电位低、易腐蚀的缺点,限制了其在工业上的应用。目前,表面涂层防护技术是提高镁合金耐腐蚀性最有效的方法之一。氧化石墨烯(GO)因具有显著的热学和阻挡性能,在金属保护等方面具有广阔的应用前景。基于GO设计的涂层可以对腐蚀性介质提供良好的物理屏障,已成为防腐蚀涂层的候选材料之一。本文对单一组分的GO纳米片本身存在团聚和相容性差等局限性问题提出了解决方案。主要回顾了GO复合涂层制备方法和类型,总结了在镁合金防腐领域的最新研究进展,并深入分析了其保护机理。最后,对GO运用到的镁合金表面腐蚀防护涂层的未来发展趋势进行展望。重点阐述了镁合金表面氧化石墨烯复合涂层的制备方式以及种类,综合说明了镁合金表面氧化石墨烯涂层的研究进展以及腐蚀保护机制。
Magnesium alloy has the advantages of low density,good damping and noise reduction and good electrical conductivity.It is the lightest metal structural material in applications.However,they are easily corroded due to the low potential of magnesium alloy electrodes,which limits their wide application in industry.At present,surface coating protection technology is one of the most effective methods to improve the corrosion resistance of magnesium alloys.Graphene oxide(GO)has excellent thermal,mechanical and barrier properties,and has broad application prospects in metal protection.GO-based composite coatings can provide a good physical barrier to corrosive media and have become one of the candidate materials for anti-corrosion coatings.In this article,the solutions were proposed for the limitations of single-component GO nanosheets,such as agglomeration and poor compatibility.The preparation methods,types and corrosion protection research progress of GO composite coatings were mainly summarized and its protection mechanism was analyzed in depth.Finally,the future development trend of GO application of magnesium alloy surface corrosion protection coating were prospected.The preparation methods and types of GO composite coatings on magnesium alloys were mainly described.The research progress and corrosion protection mechanism of GO coating on magnesium alloy were summarized.
作者
陈燕宁
吴量
陈勇花
程苓
姚文辉
潘复生
CHEN Yan-ning;WU Liang;CHEN Yong-hua;CHENG Ling;YAO Wen-hui;PAN Fu-sheng(College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China)
出处
《材料工程》
EI
CAS
CSCD
北大核心
2021年第12期1-13,共13页
Journal of Materials Engineering
基金
国家自然科学基金项目(51971040,52171101,52001036,51971044)
中央高校基本科研业务费专项资金(2020CDJQY-A007)。
关键词
镁合金
氧化石墨烯
腐蚀防护
涂层
magnesium alloy
graphene oxide
corrosion prevention
coating
