SiC颗粒增强耐磨铝基复合材料组织及性能研究  

Study on Microstructure and Properties of SiC Particle-reinforced Wear Resistant Aluminum Matrix Composites

作　　者：高红霞[1] 陈宝龙 樊江磊[1] 王艳 吴深[1] 李颖 王华丽[1] GAO Hongxia;CHEN Baolong;FAN Jianglei;WANG Yan;WU Shen;LI Ying;WANG Huali(School of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450000, Chin)

机构地区：[1]郑州轻工业学院机电工程学院

出　　处：《热加工工艺》2018年第8期93-96,共4页Hot Working Technology

基　　金：河南省科技攻关项目(162102210054)

摘　　要：采用粉末冶金真空热压烧结工艺制备了纳/微米双尺度SiC颗粒增强的Al-Si复合材料（4%nm＋15%μm SiC/Al-Si）,分析测试了其组织、硬度、耐磨性及磨损特征,并与纳米SiC颗粒增强复合材料（4%nm SiC/Al-Si）及微米SiC颗粒增强复合材料（15%μm SiC/Al-Si）进行了对比研究。结果表明：微米SiC颗粒均匀分布在基底中,颗粒边缘与基体接触较为紧密,无明显反应物生成;纳/微米双尺度颗粒增强复合材料的硬度高于微米颗粒增强及纳米颗粒增强的复合材料,其硬度值为76.24 HV,比基体提高了35.13%;纳/微米双尺度颗粒增强铝基复合材料的耐磨性高于微米颗粒增强及纳米颗粒增强的复合材料,其磨损量比基体减少43%;纳/微米双尺度颗粒增强铝基复合材料的磨损表面较为平坦,表现为磨粒磨损特征。The nano/micron scale SiC particle reinforced Al-Si composite（4% nm＋15% μm SiC/Al-Si） was prepared by the powder metallurgy vacuum hot pressing sintering process. The microstructure, hardness, wear resistance and wear characteristic s of the composite were analyzed and tested, then the results were compared with those of nano-sized SiC particle reinforced composites （4% nm SiC/Al-Si） and micro-SiC particle reinforced composites（15% μm SiC/Al-Si）. The results show that, the micro-SiC particles are uniformly distributed in the substrate, and the edges of the particles are in close contact with the matrix, and there is no obvious formation of reactant. The hardness ofnano/micron dual-scale particles reinforced composite is higher than that of the micron particles reinforced composite and nano-particles reinforced composite. Its hardness value is 76.24 HV, which is 35.13% higher than that of matrix. The wear resistance of the nano/micron dual-scale particles reinforced aluminum matrix composite is higher than that of the micron particle sreinforced aluminum matrix composite, and the wear capacity of nano/micron particle reinforced aluminum matrix composite is 43% less than that of matrix. The wear surface of the nano/micron dual-scale particles reinforced aluminum matrix composites is relatively fiat, which is characterized by abrasive wear.

关 键 词：真空热压烧结 纳米SIC颗粒 微米SiC颗粒 铝基复合材料 耐磨性 

分 类 号：TB333[一般工业技术—材料科学与工程]