摘要
铝基轴承合金(成分:Al-20Sn-1Cu-0.5Mg),摩擦系数降低,在干摩擦过程中具有极为重要的意义。利用化学镀制备镀铜石墨烯及碳纳米管,采用球磨分散、热压烧结的方法来制备镀铜石墨烯及碳纳米管混杂铝基轴承材料;采用金相显微(OM)和扫描电子显微镜(SEM)观察复合材料的微观组织,利用X射线衍射仪(XRD)对复合材料进行物相分析,通过摩擦试验测试摩擦系数变化,结果表明:通过高能球磨技术能够将石墨烯及碳纳米管分散到铝锡复合粉体中,利用热压烧结工艺可以得到石墨烯及碳纳米管增强铝锡基轴承材料。在干摩擦的条件下,随着石墨烯含量的增加,铝基复合材料摩擦系数显著降低,波动范围也明显减小,当石墨烯含量为1.0wt.%时,复合材料摩擦系数平均值降低至0.12。
Aluminum-based bearing alloy (component: Al-20Sn-1Cu-0.5Mg), the friction coefficient is reduced, which is of great significance in the dry friction process. In this paper, copper-plated graphene and carbon nanotubes were prepared by electroless plating, and copper-plated graphene and carbon nanotube hybrid modified aluminum-based bearing materials were prepared by ball-milling dispersion and hot-press sintering;metallographic microscopy (OM) and scanning electrons were used. The microstructure of the composite was observed by microscope (SEM). The phase of the composite was analyzed by X-ray diffractometry (XRD). The friction coefficient was tested by friction test. The results show that graphene and carbon nanoparticle can be obtained by high energy ball milling. The tube is dispersed in the aluminum-tin composite powder, and the graphene and carbon nanotube-reinforced aluminum-tin-based bearing materials can be obtained by a hot press sintering process. Under the condition of dry friction, with the increase of graphene content, the friction coefficient of aluminum matrix composites decreased significantly, and the fluctuation range also decreased significantly. When the graphene content was 1.0wt.%, the average friction coefficient of composites decreased to 0.12.
作者
尹冬松
陈客举
宋良
王艳琪
YIN Dong-song;CHEN Ke-ju;SONG Liang;WANG Yan-qi(College of Materials Science and Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China)
出处
《佳木斯大学学报（自然科学版）》
CAS
2019年第5期782-785,852,共5页
Journal of Jiamusi University：Natural Science Edition
基金
哈尔滨市应用技术研究与开发项目(2017RAQXJ051)
黑龙江省博士后科研资助项目(LBH-Q16201)支持
关键词
石墨烯及碳纳米管混杂
铝基轴承材料
微观组织
减磨性能
graphene and carbon nanotube hybrid
aluminum-based bearing material
microstructure
wear reduction performance
