摘要
利用金相显微镜(OM)、摩擦磨损试验机、扫描电镜(SEM)对Al-15Si-4Cu-Mg复合材料微观组织形貌、摩擦磨损性能、磨痕表面形貌进行表征和分析。研究添加不同含量石墨烯对Al-15Si-4Cu-Mg复合材料微观组织及摩擦磨损性能的影响。结果表明,随石墨烯含量增加,复合材料中硅颗粒形貌逐渐变得圆钝且尺寸减小,复合材料的硬度有所增加,摩擦系数减小,耐磨性能显著提高;加入0.3%石墨烯的复合材料磨损机制为磨粒磨损,当石墨烯的含量达到0.7%时复合材料的磨损机制以轻微的粘着磨损为主并有少量的磨粒磨损。
Microstructure,friction and wear properties and surface morphology of wear marks of Al-15 Si-4 Cu-Mg composites were characterized and analyzed by metallographic microscope(OM),friction and wear tester and scanning electron microscopy(SEM).The effects of graphene content on the microstructure and friction and wear properties of Al-15 Si-4 Cu-Mg composite were studied.The results show that with the increase of graphene content,the morphology of silicon particles in the composites becomes blunt and the size decreases,the hardness of the composites increases,the friction coefficient decreases,and the wear resistance of the composites increases remarkably.The wear mechanism of the composites with 0.3% graphene is abrasive wear,when the content of graphene reaches 0.7%.The wear mechanism of the material is mainly slight adhesion wear and a little abrasive wear.
作者
张凯
水丽
ZHANG Kai;SHUI Li(Shenyang Ligong University,Shenyang 110159,China)
出处
《沈阳理工大学学报》
CAS
2019年第1期25-28,47,共5页
Journal of Shenyang Ligong University
