石墨烯增强镁基复合材料制备方法概述

Survey of preparation method of graphene-reinforced magnesium matrix composite

镁合金材料因强度低、模量小、塑性差和易腐蚀等缺点,限制了其在工业领域的应用。由于石墨烯具有强度高、模量大和高温稳定性好等特征,以石墨烯为增强体的镁基复合材料备受关注。目前,石墨烯增强镁基复合材料的制备方法主要有粉末冶金法、熔体铸造法、原位还原法和半固态注射成型铸造法。从石墨烯在镁合金基体中的分散方式综合分析了各种制备方法的特点,并通过复合材料力学性能的分析,指出了其未来研究的方向。

The application of magnesium alloy in industrial field is limited by its low strength,small modulus,low plasticity and easy corrosion.Due to the high strength,high modulus and high temperature stability of graphene,magnesium matrix composites reinforced with graphene have attracted much attention.The preparation methods include powder metallurgy,melt casting,in-situ reduction and thixomolding process.The dispersion of graphene in magnesium alloy matrix was analyzed,and pointed out the future research direction by analyzing the mechanical properties of the composites.