| (WC+SiCw)/Cu-Al2O3复合材料载流摩擦磨损行为 |
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| 引用本文： | 林焕然,国秀花,宋克兴,苏娟华,李韶林,冯江.(WC+SiCw)/Cu-Al2O3复合材料载流摩擦磨损行为[J].表面技术,2022,51(1):33-42. |
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| 作者姓名： | 林焕然 国秀花 宋克兴 苏娟华 李韶林 冯江 |
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| 作者单位： | 河南科技大学 材料科学与工程学院 河南 洛阳 471023;河南科技大学 材料科学与工程学院 河南 洛阳 471023;河南科技大学 河南省有色金属材料科学与加工技术重点实验室 河南 洛阳 471023 ;河南科技大学 有色金属新材料与先进加工技术省部共建协同创新中心，河南 洛阳 471023 |
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| 基金项目： | 国家自然科学基金(51605146, U1502274);河南省重点研发与推广专项(科技攻关项目)(212102210110);河南省高等学校青年骨干教师培养计划项目(2018GGJS045);中国博士后科学基金(2020T130172, 2020M682288) |
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| 摘 要： | 目的 研究相同载流条件下纳米Al2O3颗粒、微米WC颗粒和SiC晶须对(WC+SiCw)/Cu-Al2O3复合材料表面摩擦磨损性能的影响.方法 采用粉末冶金法和内氧化法相结合的方式,制备了(WC+SiCw)/Cu-Al2O3复合材料,并利用HST-100高速载流摩擦试验机进行载流摩擦磨损性能测试.采用透射电镜和扫描电镜...
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| 关 键 词： | Cu-Al2O3复合材料 摩擦磨损 纳米Al2O3颗粒 微米WC颗粒 SiC晶须 协同强化 |
| 收稿时间： | 2021/3/13 0:00:00 |
| 修稿时间： | 2021/6/7 0:00:00 |
Current Carrying Friction and Wear Behavior of (WC+SiCw)/Cu-Al2O3 Composites |
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| LIN Huan-ran,GUO Xiu-hu,SONG Ke-xing,SU Juan-hu,LI Shao-lin,FENG Jiang.Current Carrying Friction and Wear Behavior of (WC+SiCw)/Cu-Al2O3 Composites[J].Surface Technology,2022,51(1):33-42. |
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| Authors: | LIN Huan-ran GUO Xiu-hu SONG Ke-xing SU Juan-hu LI Shao-lin FENG Jiang |
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| Affiliation: | School of Materials Science and Engineering,Luoyang 471023, China;School of Materials Science and Engineering,Luoyang 471023, China;Key Laboratory of Materials Science & Processing Technology for Non- ferrous Metals of Henan,Luoyang 471023, China ;Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology, Henan University of Science and Technology, Luoyang 471023, China |
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| Abstract: | The aim of this paper is to study the effect of nano-Al2O3 particles, micro-WC particles and SiC whiskers on the surface friction and wear properties of (WC+SiCw)/Cu-Al2O3 composite under the same current carrying conditions. The (WC+SiCw)/Cu-Al2O3 composites were prepared by powder metallurgy and internal oxidation, and their current carrying friction and wear properties were tested by HST-100 current carrying high speed tester. The microstructure of the composite materials and its surface morphology after current carrying friction and wear test were observed by transmission electron microscope and scanning electron microscope. The effects of different reinforcing phases on the wear property of (WC+SiCw)/ Cu-Al2O3 composites were studied and the wear mechanism was analyzed. The samples were drawn using an AUTOGRAPH AG-I 250 kN drawing device and the relation between tensile strength and wear property was analyzed. The results show that the hardness and ultimate tensile strength of (1WC+2SiCw)/Cu-Al2O3 composites are 20.2% and 12.7% higher than those of Cu-Al2O3 composites. The friction coefficient of (1WC+2SiCw)/Cu-Al2O3 composite is the least (0.33), which is 42.1% lower than that of Cu-Al2O3 composite. The wear morphology of (1WC+2SiCw)/Cu-Al2O3 composite is the smoothest, and there is no large area arc ablation, and the number of grooves is small and superficial. Therefore, the wear mechanism of (WC+SiCw)/ Cu-Al2O3 composite is mainly relevant to adhesive wear, abrasive wear and arc ablation; Nano-Al2O3 particles, micro-WC particles and SiC whiskers strengthen the copper matrix and improve the strength and hardness of the composite, thus reducing the friction coefficient and wear rate of the copper matrix composite. Besides, the wear of Cu-Al2O3 composites can be effectively improved when the mass ratio of WC particles and SiC whiskers is appropriate. |
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| Keywords: | Cu-Al2O3 composite material wear property nano-Al2O3 particles micro-WC particles SiC whiskers synergetic reinforcement |
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