吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (6): 1967-1973.doi: 10.13229/j.cnki.jdxbgxb201606028

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Diffusion alloying of Cu-C induced by high current pulsed electron beam

GUAN Qing-feng, HUANG Wei, LI Huai-fu, GONG Xiao-hua, ZHANG Cong-lin, LYU Peng   

  1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
  • Received:2015-10-20 Online:2016-11-20 Published:2016-11-20

Abstract: High Current Pulsed Electron Beam (HCPEB) was employed for the surface irradiation of Cu-C composite material made by high sintering, where C is in the form of flake graphite. The irradiating times were 1, 5, 20 and 40 respectively. The phase composition and microstructure of the irradiated samples were analyzed in detail using XRD, SEM and TEM. The surface friction and wear properties of the irradiated samples were also examined. Results of XRD indicate that the diffraction peak shifts to high angle after HCPEB irradiation, and the solid solution occurs between Cu-C. Furthermore, C atoms and Cu atoms forms interstitial solid solution partly, and the maximum calculated solid solubility reaches 2.24%. Microscopic results show that high density Cu and C nanoparticles are formed on the irradiated surface, and high density crystal defect is induced in the matrix Cu at the same time, which provides a large number of diffusion channels for the diffusion of C atoms. Furthermore, the friction and wear properties of the material are improved obviously after HCPEB irradiation.

Key words: metallic material, high current pulsed electron beam(HCPEB), Cu-C composite material, solid solution, diffusion, friction and wear properties

CLC Number: 

  • TG156
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