[1]刘 强,曾燮榕,谢盛辉,等.Gr/Al-0.7Si-1.2Mg复合材料制备及摩擦性能研究[J].深圳大学学报理工版,2007,24(2):166-171.
 LIU Qiang,ZENG Xie-rong,XIE Sheng-hui,et al.Gr/Al-0.7Si-1.2Mg composite preparation and its tribological properties research[J].Journal of Shenzhen University Science and Engineering,2007,24(2):166-171.
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Gr/Al-0.7Si-1.2Mg复合材料制备及摩擦性能研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第24卷
期数:
2007年2期
页码:
166-171
栏目:
生命科学
出版日期:
2007-04-30

文章信息/Info

Title:
Gr/Al-0.7Si-1.2Mg composite preparation and its tribological properties research
文章编号:
1000-2618(2007)02-0166-06
作者:
刘 强1曾燮榕1谢盛辉2邹继兆2李志强1
1)深圳大学材料学院,深圳市特种功能材料重点实验室,深圳 518060;
2)西北工业大学材料学院,西安710068
Author(s):
LIU Qiang1ZENG Xie-rong1XIE Sheng-hui2LI Zhi-qiang1and ZOU Ji-zhao2
1)Shenzhen Key Laboratory of Functional Materials,College of Materials Science and Engineering,Shenzhen University,Shenzhen 518060,P.R.China
2)College of Materials Science and Engineering,Northwestern Polytechnical University,Xi’an? 710068,P.R.China
关键词:
Gr/Al-0.7Si-1.2Mg复合材料二次热压 摩擦系数磨损率石墨润滑膜
Keywords:
Gr/Al-0.7Si-1.2Mg compositestwice hot pressingfriction coefficientwear rategraphite lubrication film
分类号:
TG 113.12;TG 249.9
文献标志码:
A
摘要:
采用二次热压法制备Gr质量分数为10%~25%的Gr/Al-0.7Si-1.2Mg复合材料,研究了制备工艺对组织结构及其摩擦磨损性能的影响.结果表明,采用较快速率升温的热压法可有效防止石墨铝复合材料制备过程的有害界面反应,得到组织均匀且致密的石墨铝基复合材料.Gr/Al-0.7Si-1.2Mg复合材料的摩擦系数随载荷的增大而降低,在较大载荷时,可形成完整的石墨润滑膜,不同石墨含量的复合材料的磨擦系数趋于一致,达到0.17.石墨含量高的复合材料容易形成润滑层,所以摩擦系数在较低载荷下就能达到最小值.复合材料相对密度对磨损率的影响较大,接近理论密度的复合材料在本研究试验条件下能保持较低的磨损率,最低可达到0.5×10-3~2.1×10-3 mm3/m.
Abstract:
Gr(10~25)%/Al-0.7Si-1.2Mg composites were prepared by a twice hot pressing process under rapid heating conditions.The friction coefficient and wear rate of the materials were studied related to the different normal loading and reinforcement particle content.It is showed that this process can avoid harmful interfacial reactions and ensure the composites with uniform microstructure and high relative densities.With increasing normal loading,the friction coefficients of Gr(10~25)%/Al-0.7Si-1.2Mg composites drop rapidly? at the beginning and then decrease slowly to 0.17 due to the formation of a stable graphite lubrication film at relatively high loading.The friction coefficient of composites with relatively high graphite content can reach the minimum value at lower normal loading because the abundant graphite facilitates the formation of the graphite lubrication film.The relative density of the composites is the main factor of influencing the wear rate.The composites with high density can remain relatively low wear rate of (0.5~2.1)×10-3 mm3/m under the experimental conditions.

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备注/Memo

备注/Memo:
收稿日期:2006-09-19
基金项目:深圳大学科研启动基金资助项目(200520)
作者简介:刘强(1982-),男(汉族),山东省济宁市人,深圳大学在读硕士研究生.E-mail:shanqliu@126.com
通讯作者:曾燮榕(1963-),男(汉族),深圳大学教授、博士生导师.E-mail:zengxier@szu.edu.cn
更新日期/Last Update: 2007-12-07