| 引用本文： |
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湛永钟,解浩峰,史小波,曾建民.SiC颗粒增强物对铜基复合材料磨损行为转变的影响[J].广西科学,2005,12(4):295-299. [点击复制]
- Zhan Yongzhong,Xie Haofeng,Shi Xiaobo,Zeng Jianmin.Effect of SiC Particulate Reinforcement on the Wear Transition of Copper Matrix Composite[J].Guangxi Sciences,2005,12(4):295-299. [点击复制]
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| 摘要: |
| 采用粉末冶金结合热挤压的工艺制备SiCp/Cu复合材料,研究SiC颗粒增强物对铜基复合材料在不同载荷条件下磨损行为转变的影响规律;并与纯铜进行比较,探讨颗粒增强物对材料磨损行为影响的机理。结果表明,SiC颗粒的加入提高了铜基复合材料的耐磨性,延缓了高载荷条件下严重磨损的发生。在低于临界转变载荷时,复合材料的磨损表面形成硬度很高的机械混合层(MML),改变了摩擦副的接触形式,对复合材料起到保护作用。高载荷条件下,SiC颗粒增强物可有效减轻亚表层的塑性变形量和粘着磨损程度,提高了材料发生严重磨损的临界转变载荷,有利于材料在高载荷滑动条件下的应用。 |
| 关键词: 复合材料 铜 磨损行为 转变载荷 SiC颗粒 |
| DOI： |
| 投稿时间：2004-12-17修订日期：2005-07-28 |
| 基金项目:广西教育厅[桂教科研(2004)20号]、广西青年科学基金(桂科青0542011)和有色金属材料及基加工新技术教育部重点实验室开放基金课题(kfjj200501)联合资助。 |
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| Effect of SiC Particulate Reinforcement on the Wear Transition of Copper Matrix Composite |
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Zhan Yongzhong, Xie Haofeng, Shi Xiaobo, Zeng Jianmin
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| (Key Laboratory of Nonferrous Metals and New Processing Technology, Ministry of Education, Guangxi University, Nanning, Guangxi, 530004, China) |
| Abstract: |
| SiCp/Cu composite was fabricated by powder metallurgy plus hot extrusion method while studing the effect of particulate addition on the wear transition of copper matrix composite.It was compared with the pure copper specimens to investigate the wear mechanism.The experimental results showed that the incorporation of SiC particulates improved the wear resistance and delayed severe wear under high applied loads.When the applied load was lower than the transition load,a hard mechanically mixed layer(MML) was formed on the worn surface of the composite.MML protected the composite in the wear process by changing the contact mode of the tribo-system.At high applied load,SiC particulate reinforcement effectively decreased the plastic deformation of subsurface region,therefore,alleviated adhesive wear and significantly improved the wear resistance. |
| Key words: matrix composite copper wear behavior transition load SiC particle |
