石墨烯铝基复合材料的界面反应研究
Study on Interface Reaction of Aluminum-Matrix Composite Reinforced by Graphene

作者: 陈长科 , 马 冰 :新疆众和股份有限公司,新疆 乌鲁木齐; 张海平 , 李炯利 , 王旭东 :北京航空材料研究院,北京;

关键词: 铝基复合材料石墨烯界面反应机理研究Aluminum-Matrix Composite Graphene Interface Reaction Mechanism Analysis

摘要:
石墨烯具有极其优异的力学性能,是理想的复合材料增强体。本文以商业纯铝为基体,石墨烯为增强相,通过超声混合法制备石墨烯-Al复合粉末,通过真空热压烧结制备石墨烯-Al复合材料,通过扫描电镜(SEM)、差热分析(DSC)、X-射线衍射分析(XRD)、显微硬度计表征了材料的宏观形貌、微观形貌、反应温度、相组成和显微硬度等。结果表明:石墨烯和Al在400℃时便开始发生反应,但在600℃以下时,两者反应速度较慢,在Al熔点以上时,石墨烯和Al反应速度明显增加,石墨烯和Al反应生成Al4C3;少量的Al4C3可以增强石墨烯和Al基体的结合力,有利于提高材料的力学性能,但是大量脆性Al4C3生成时,材料的力学性能下降。

Abstract: Graphene has excellent mechanical properties and is considered as an excellent strengthening material in composite. In this paper, ultrasonic mixing was used to obtain uniformly dispersed graphene into Al powder and hot pressing was used to fabricate Graphene-Al composite bulk. The samples were characterized by scanning electron microscopy (SEM), differential thermal analysis (DSC), X-ray diffraction (XRD); the mechanical properties were tested by microhardness test. The results showed that the graphene could react with Al at 400˚C and form Al4C3 phase, and the reacting rates were relative low under 600˚C, the reacting rates increased significantly above the melting point of aluminum. Slight formation of Al4C3 could increase the mechanical property of composites, but massive Al4C3 would greatly decrease the mechanical property of composites.

文章引用: 陈长科 , 张海平 , 马 冰 , 李炯利 , 王旭东 (2017) 石墨烯铝基复合材料的界面反应研究。 纳米技术, 7, 66-73. doi: 10.12677/NAT.2017.73008

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