Nanoindentation and Friction/Wear Behaviors of a Magnetron Sputtered Cnx/Sic Films on Magnesium Alloy

Abstract:

The interface adhesion, nano-indentation and friction/wear properties of the CNx films in CNx/SiC (carbon nitride/silicon carbon) double layer films (SiC as interlayer) deposited on Mg alloy (AZ91D) substrate by using magnetron sputtering technique at room temperature were investigated. The results show that the interface between CNx film and SiC film and the interface between SiC film and Mg substrate both showed obvious and gradual element diffusions as well as high adhesion. The CNx films exhibited low nano-hardness (3.85 GPa) and Young's modulus (30.46 GPa) but high hardness-to-modulus ratio (0.126). As sliding against Si3N4 (silicon nitride) ball (4 mm in diameter) using ball-on-disc friction and wear tester under dry sliding condition at 200g load, the CNx films exhibited the friction coefficient of about 0.20 and the special wear rate in the order of magnitude of 10−6 mm3 m−1 N−1 without film cracking and interface delaminating.

• Periodical: Key Engineering Materials (Volume 464)
• Pages: 637-641
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.464.637
• Online since: January 2011
• Authors: J.P. Mo, Xiao Nong Cheng, Xiao Jing Xu, Deng Fu Xia, Xin Ni Hao
• Keywords: Friction, Magnetron Sputtering Deposition, Mg Alloy Substrate, Nanoindentation, Thin Film, Wear

References

[1] K. Kato, N. Umehara, K. Adachi: Wear Vol. 254(11) (2003), p.1062.

[2] X.J. Xu, H. Wang, X. N Cheng: Materials Science Forum Vol. 610-613 (2009), p.1026.

[3] K.H. Lee, O. Takai: Diamond and Related Materials Vol. 14(9) (2005), p.1444.

[4] J. Fernandez-Palacio, I. Arce-Garcia, S. J. Bull: Tribology International Vol. 37(11-12) (2004), p.929.

DOI: 10.1016/j.triboint.2004.07.010

[5] N. Fujisawa, D.R. McKenzie, N.L. James, J.C. Woodard, M.V. Swain: Wear 260(1-2) (2006), p.62.

[6] A. Leyland and A. Matthews: Wear Vol. 246(1-2) (2000), p.1.