铜合金镶嵌石墨材料的摩擦磨损性能
Friction and Wear Properties of Copper Alloy Inlaid Graphite Material
摘 要
将硬度和强度不同的2种石墨分别镶嵌于Cu-15Ni-8Sn合金基体上，然后将Cu-15Ni-8Sn合金镶嵌石墨材料与05Cr17Ni4Cu4Nb沉淀硬化不锈钢组成摩擦副，研究了不同载荷（490，980，1 470 N）和润滑条件（干摩擦与湿摩擦）下该材料的摩擦磨损性能。结果表明：干摩擦条件下该材料的摩擦因数随载荷的增大基本呈增大趋势，且镶嵌较高硬度和强度石墨时材料的干摩擦因数小于镶嵌较低硬度和强度石墨时材料的；湿摩擦条件下，镶嵌较高硬度和强度时石墨材料的摩擦因数随载荷的增大而增大，且与干摩擦条件下的相当；随着载荷的增大，在干摩擦和湿摩擦条件下的磨损量均呈增大趋势；干摩擦条件下石墨的磨损机制以磨粒磨损为主，并伴有疲劳磨损，而湿摩擦条件下的磨损机制以磨粒磨损和冲刷磨损为主。
摩擦因数
磨损机制
copper alloy inlaid graphite
friction coefficient
wear mechanism
Abstract
Two kinds of graphite with different hardness and strength were inlaid in the Cu-15Ni-8Sn alloy matrix. The friction pairs of Cu-15Ni-8Sn copper alloy inlaid graphite material and 05Cr17Ni4Cu4Nb precipitation hardened stainless steel were obtained. The friction and wear properties of the material under different loads (490,980,1 470 N) and different lubrication conditions (dry friction and wet friction) were studied. The results show that under dry friction condition, the friction coefficient of the materials almost increased with load, and the dry friction coefficient of the material with higher hardness and strength graphite was smaller than that of the material with lower hardness and strength graphite. Under wet friction condition, the friction coefficient of the material with higher hardness and strength graphite increased with load, but was similar with that under dry friction condition. With increasing load, the wear loss under dry friction and wet friction increased. The wear mechanism of graphite was abrasive wear accompanied with fatigue wear under dry friction condition, and was abrasive wear and erosive wear under wet friction condition.
中图分类号 TB333 DOI 10.11973/jxgccl202105009
所属栏目 材料性能及应用
基金项目 2019年度（工业强基）产业转型升级发展专项资金资助项目（GYQJ-2019-1-24）
收稿日期 2019/6/11
修改稿日期 2021/3/15
网络出版日期
作者单位点击查看
备注史科(1986-),男,浙江慈溪人,工程师,学士
引用该论文: SHI Ke,WANG Wendong,SI Mingming,WANG Fei,ZHANG Chao. Friction and Wear Properties of Copper Alloy Inlaid Graphite Material[J]. Materials for mechancial engineering, 2021, 45(5): 50～55
史科,王文东,司明明,王飞,张超. 铜合金镶嵌石墨材料的摩擦磨损性能[J]. 机械工程材料, 2021, 45(5): 50～55
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【4】王江文,陆龙,孟军虎,等.Cu-2Ni-5Sn-(石墨+PbO)自润滑复合材料高温摩擦学性能的研究[J].摩擦学学报,2018,38(1):84-92. WANG J L, LU L, MENG J H, et al. High temperature tribological properties of Cu-2Ni-5Sn-graphite-PbO self-lubricating composites[J].Tribology, 2018,38(1):84-92.
【5】CRIBB W R,GRENSING F C. Spinodal copper alloy C72900-New high strength antifriction alloy system[J].Canadian Metallurgical Quarterly, 2011,50(3):232-239.
【6】董瑞峰.铜合金/石墨复合材料的研究[D].天津:天津大学,2012. DONG R F. The research of copper alloy/graphite composites[D]. Tianjin:Tianjin University, 2012.
【7】杨晓萍.石墨/锡青铜复合材料制备技术及摩擦磨损性能研究[D].沈阳:东北大学,2013. YANG X P. Research on preparation technology and the friction and wear properties of the bronze-copper coated graphite composite[D]. Shenyang:Northeastern University, 2013.
【8】尹延国.铜基石墨自润滑材料及其摩擦学研究[D].合肥:合肥工业大学,2006. YIN Y G. Research on preparation and tribological properties of copper matrix with graphite self-lubricating materials[D]. Hefei:Hefei University of Technology, 2006.
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【10】RAJKUMAR K,ARAVINDAN S,KULKARNI M S.Wear and life characteristics of microwave-sintered copper-graphite composite[J].Journal of Materials Engineering and Performance, 2012,21(11):2389-2397.
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