摘要
针对石墨烯在铝基体中分散不均匀的问题,采用电荷吸引的方法,将用Hummers法制备的带负电荷氧化石墨烯加入到表面处理后带有正电荷的铝粉中,得到氧化石墨烯/铝复合粉末,最后采用粉末冶金制备出石墨烯增强铝基复合材料.使用扫描电子显微镜,X射线衍射仪和傅里叶变换红外光谱仪等对石墨烯增强铝基复合材料的显微组织和力学性能进行研究.实验结果表明:石墨烯均匀的分散在复合材料中,相比于纯铝,石墨烯的质量分数仅为0.5%时,石墨烯增强铝基复合材料的维氏硬度和抗拉强度分别提高了19.7%和20%.
To solve the problem of graphene aggregate in the aluminum matrix, the method of charge attract was adopted. The graphene oxide/A1 composite powders were fabricated by graphene oxide with negative charge prepared by the Hummers method and the aluminum powder with positive charge. Finally was prepared graphene reinforced aluminum matrix composites by powder metallurgy. The mechanical properties and microstructure were studied using scanning electron microscope （SEM）, X-ray diffraction and Fourier Transform infrared spectroscopy （FT-IR） and material testing machine. Experimental results shows graphene homogenously dispersed in the alumi- num matrix. Compare with pure A1, adding only O. 50 wt% graphene, the Vickers hardness and tensile strength were increased by nearly 19.7% and 20% respectively.
出处
《哈尔滨理工大学学报》
CAS
北大核心
2015年第3期61-65,共5页
Journal of Harbin University of Science and Technology
基金
2014年黑龙江省大学生创新创业训练计划项目(201410214001)
关键词
石墨烯
铝基复合材料
粉末冶金
力学性能
graphene
A1 matrix composite
powder metallurgy
mechanical properties
