镀铜石墨/铜复合材料的组织和摩擦磨损性能

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (9731KB)
Export: BibTeX | EndNote (RIS)

Abstract Copper-coated graphite/copper composites were prepared by spark plasma sintering (SPS) with electrolytic copper powder as matrix and copper-coated graphite as lubrication phase. The effect of graphite content on microstructure, hardness, porosity, friction and wear properties of the composites were investigated. Results shows that the copper-coated graphite can be uniformly dispersed in the Cu matrix to refine the grains and uniform structure. The copper-coated layer on the graphite surface can enhance the interfacial bonding strength between graphite and Cu matrix. When the content of copper-coated graphite was over 4wt%, the change range of hardness and porosity of the composite material increased significantly. The copper-coated graphite had a fine-grained strengthening effect to enhance the hardness of the composite. When the content of copper-coated graphite was 4wt%, the hardness reached a maximum of 53.6HV, but the combined effect of the copper-coated graphite content and the porosity causes the hardness to increase first and then decrease. As the content of copper-coated graphite increases, the porosity of composites increased remarkably, and the friction coefficient and wear amount decreased gradually. When the content of copper-coated gra-phite was 8wt%, the friction coefficient and wear of composites were reduced by 63.9%, 96.3%, respectively, compared with pure copper. The copper-coated graphite was tightly embedded in the copper matrix as a lubricating phase, which significantly improved the friction and wear pro-perties of the composite. The friction and wear mechanism of composites were mainly abrasive wear, adhesive wear and oxidative wear.

Key words： copper-coated graphite copper-coated graphite/copper composites microstructure fine-grain strengthening friction and wear

Published: 01 July 2020

CLC number:

TG146.1+1

Fund:This work was financially supported by Guangdong Academy of Science Fund (2019GDASYL-0502009), Science and Technology Planning Project of Guangdong Province (2017A070701029,2017A050503004,2018dr005), the GDAS' Project of Science and Technology Development(2019GDASYL-0302017).

About author:: Xiao Qin received his B.E. degree in metal material engineering in materials science and engineering from the Liaoning Technical University in 2013, and his M.S degree in material processing engineering in materials science and engineering from the central south university (CSU) in 2017. His research has focus on metal matrix composites ; Juan Wang, professor of engineer. In 2017, she was elected as the “Top Special Talent of Guangdong” for scientific and technological innovation. Mainly engaged in the preparation and industrial application of high-performance ceramic-reinforced metal matrix composite materials, and carry out scientific research around steel wear-resistant materials, advanced structural ceramics, interface connections, composite solders, and genetic engineering of materials. Presided over/participated in more than 50 national, provincial, and municipal scientific research projects, and the total project funding exceeded 30 million yuan. Published more than 30 papers and 1 monograph. Lead or participate in the formulation of 11 na- tional standards, corporate standards and corporate standards. Applied 60 invention patents and obtained 33 authorized invention patents. He has won 8 awards at various levels including the Guangdong Gold Patent Award, Guangdong Science and Technology Progress First Prize, China Nonferrous Industry Science and Technology First Prize. Out-of-school instructor of master degree graduate students in the field of materials engineering in South China University of Technology, Guangdong University of Technology, Shenyang University of Technology, Nanhua University, etc., is a member of the Expert Committee of China Nonferrous Metals Industry Technology Innovation Alliance, and a secretary of Guangdong Province Metal Matrix Composites Industry Technology Innovation Alliance Director of Guangdong 3D Printing Industry Technology Innovation Alliance.

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	QIN Xiao
	WANG Juan
	LIN Gaoyong
	ZHENG Kaihong
	WANG Haiyan
	FENG Xiaowei

Cite this article:

QIN Xiao,WANG Juan,LIN Gaoyong, et al. Microstructure, Friction and Wear Properties of Copper-CoatedGraphite/Copper Composites[J]. Materials Reports, 2020, 34(Z1): 380-384.

URL:

http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2020/V34/IZ1/380

1 Rajkumar K, Kundu K, Aravindan S, et al. Materials and Design,2011,32(5),3029.
2 Futamia T, Ohirab M, Mutoa H, et al. Cabon,2009,47(11),2742.
3 Sapate S G, Uttarwar A, Rathod R C, et al. Materials and Design,2009,30(2),376.
4 冉旭,黄显峰,段利利,等.材料导报:研究篇,2012,26(4),33.
5 Yasar I, Canakci A, Arslan F. Tribology International,2007,40(9),1381.
6 Grandin M, Wiklund U. Tribology International,2018,121,1.
7 钱刚,凤仪,张学斌,等.表面技术,2016,45(1),7.
8 Da H H, Manory R, Sinkis H. Wear,2000,239(1),10.
9 宋影影,李佳节,张彪.稀有金属与硬质合金,2010,38(3),13.
10 Bolotin K I, Sikes K J, Jung G, et al. Solid State Communications,2008,146(9-10),351.
11 张蓓,张治国,李卫.材料导报:综述篇,2012,26(11),92.
12 杜平,张伟,刘志兰,等.表面技术,2018,47(6),222.
13 Moustafa S F, Elbadry S A, Sanad A M, et al. Wear,2002,253(7),699.
14 余刚,邹超,胡波年,等.湖南大学学报(自然科学版),2011,38(2),60.
15 Chen J, Ren S, He X, et al. Carbon,2017,121(9),25.
16 李雅文,丁华东,浩宏奇,等.稀有金属材料与工程,1998,(3),182.
17 焦明华,尹延国,俞建卫,等.中国有色金属学报,2007,17(10),1637.
18 Kovacik J, Emmer S, Bielek J, et al. Wear,2008,265(3-4),417.
19 马垚,周张健,姚伟志,等.材料导报,2008,22(7),60
20 Nayan N, Shukla A K, Chandran P, et al. Materials Science & Enginee-ring A,2017,682,229.
21 Harun A, Elizabeth A H, Mike P, et al. Acta Materialia,2006,54(12),3261.
22 Couturier G, Doherty R, Maurice C, et al. Acta Materialia,2005,53(4),977.
23 Kim B N, Kishi T. Acta Materialia,1999,47(7),2293.
24 Liu X, Wei D, Zhuang L, et al. Materials Science & Engineering A,2015,642,1.
25 Ke C, Jia C. Physica Status Solidi,2014,211(1),184.
26 路君,曾小勤,丁文江.轻金属,2008(8),59.
27 黄培云.粉末冶金原理,机械工业出版社,1997.