Effect of Electrical Current on Wear Rate of Nano-Al₂O_3p/Cu Composite

Abstract:

The nano-Al2O3p/Cu composite performed in this paper was prepared by internal oxidation. The nano-Al2O3p/Cu composite wire and the Cu-Ag alloy wire were slid against a copper-based powder metallurgy strip under unlubricated conditions. The wear behavior of nano-Al2O3p/Cu composite and Cu-Ag alloy were researched under different currents from 0~50A and sliding distance from 0~72Km. Worn surfaces of the nano-Al2O3p/Cu composite were analyzed by scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDS). The results indicate that the nano-Al2O3p/Cu composite surface is dispersed with Al2O3 particles having a size of 10~20nm; the wear rate of both 0.60Al2O3p/Cu (containing 0.60wt.% Al2O3) composite and Cu-Ag alloy increases with the increasing electrical current and sliding distance, which increases abruptly at the beginning and smoothly subsequently; The wear rate of Cu-Ag alloy is 2-5 times that of 0.60Al2O3p/Cu composite without electrical current; The wear rate of Cu-Ag alloy is 5-10 times that of 0.60Al2O3p/Cu composite with electrical current of 30A-50A; The sensitivity of electrical current on the Cu-Ag alloy is more apparently than that on 0.60Al2O3p/Cu composite. Adhesive, abrasive, and electrical erosion wear are the dominant mechanisms during the electrical sliding processes.

• Periodical: Advanced Materials Research (Volumes 97-101)
• Pages: 717-723
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.97-101.717
• Online since: March 2010
• Authors: Xiu Hua Guo, Ke Xing Song, Shu Hua Liang, Qing Wang, Yong Peng Wang
• Keywords: Al₂O₃ Particle, Electrical Sliding, Nano-Al₂O_3p/Cu Composite, Wear Behaviour

References

[1] H.H. Da, R.M. Rafael and G.J. Norm: Wear Vol. 215(1998), pp.146-155.

[2] N. Hiroki and K. Koji: J. Wear Vol. 216 (1998), pp.179-183.

[3] H. Nagasawa and K. Kato: Wear Vol. 216 (1998), pp.179-183.

[4] P. Liu, J.H. Su and Q.M. Dong: Jour. Mater. Sci. Tech. Vol. 21 (2005), pp.475-478.

[5] Y. Liu, P. Liu and B.H. Tian: Proceedings of the 3rd Asian Conference on Heat Treatment of Materials[C]. Seoul, Korea: The Korea Society for Heat Treatment (2005), p.64~66.

[6] S.G. Jia, P. Liu and F.Z. Ren: J. Wear Vol. 262(2007), pp.772-777.

[7] R.H. Liu, K.X. Song and S.G. Jia: J. Chin. Journ. Aero. Vol. 21(2008), pp.281-288.

[8] A.V. Nadkarni and Warrendale. P.A.: The Metal. of AIME (1984), pp.77-101.

[9] D.W. Lee and B.K. Kim: Mater. Lett. Vol. 58(2004), pp.378-383.

[10] S.H. Liang, Z.K. Fan and L. Xu: Composites Part A, Vol. 35 (2004), pp.1441-1446.

[11] K.X. Song, P. Liu and B.H. Tian: Mater. Sci. Forum. (2005), pp.475-479, 993-996.

[12] P.J. Blau: Wear Vol. 72(1981), pp.55-66.

[13] W.D. Kuhlmam: Wear Vol. 200(1996), pp.8-15.

[14] D. Paulmier, A. Bouchoucha and H. Zaidi: Vacuum Vol. 41(1990), pp.2213-2216.

[15] A. Bouchoucha and H. Zaidi: Wear (1997), pp.203-204, 434-441.

[16] P. Liu, S. Bahadur and J.D. Verhoeven: IEEE Trans. CPMTA Vol. 174(1994), pp.616-624.