摘要
采用粉末冶金的方法,制备了石墨烯/Al-15Si复合材料,研究了石墨烯/Al-15Si复合材料的微观组织形貌对摩擦磨损性能的影响,并运用分形理论,借助于Matlab软件分析复合材料中硅颗粒相形貌特征。结果表明,随着石墨烯添加量的改变,石墨烯/Al-15Si复合材料有不同的分形维数;分形维数反映了复合材料中硅颗粒分布状态,分形维数越大,硅颗粒分布越均匀细小,材料的硬度越高;分形维数可以间接反映复合材料的抗磨损性能,分形维数越大,材料的摩擦系数越低,耐磨损性能越好。
Graphene/Al-15Si composites were prepared by powder metallurgy method, and the study was carried out on the effect of the microstructure of graphene/Al-15Si composite on the friction and wear properties. Fractal theory was used to analyze the morphology characteristics of primary crystalline silicon phase with the help of Matlab software. The results show that the graphene/Al-15Si composites have different fractal dimensions with the change of graphene addition. Fractal dimension reflects the distribution uniformity of silicon particles in composite materials. The larger the fractal dimension, the more uniform the distribution of silicon particles, and the higher the hardness of the material. Fractal dimension can reflect indirectly the wear resistance of composite materials. The higher the fractal dimension, the lower the friction coefficient of the material, and the better the wear resistance.
作者
毛宇新
张建壮
王业懿
水丽
MAO Yu-xin;ZHANG Jian-zhuang;WANG Ye-yi;SHUI Li(School of Mechanical Engineering,Shenyang Ligong University,Shengyang 110159,Liaoning,China)
出处
《铸造》
CAS
北大核心
2019年第11期1210-1214,共5页
Foundry
基金
沈阳科技计划项目（17-231-1-32)
2018辽宁省大学生创新项目（201810144058）
关键词
石墨烯铝硅基复合材料
组织形貌
分形维数
摩擦磨损
graphene/aluminum-silicon matrix composite
morphology
fractal dimension
tribological-wear
