Effects of Tribo-Couple and Environmental Medium on the Tribological Properties of the Graphite/CaF₂/TiC/Ni-Base Alloy Composite Coating

Abstract:

The graphite/CaF₂/TiC/Ni-base alloy composite coating was prepared on the surface of 45 carbon steel by plasma spray. Effects of loads, friction counterparts and lubricants on the tribological properties of the composite coating were investigated. The results show that the wear rate of the GCTN composite coating against Si₃N₄ is 0.67×10^-3mm³/m, which is about 2 times that against GCr15 steel, because Si₃N₄ induces micro-cutting wear of the composite coating. Water and NaCl solution may induce increasing of friction coefficients and wear rates. Especially, wear rate of the GCTN composite coating in NaCl solution is increased by 3.1 times compared with those under dry sliding and water. The GCTN composite coating presents better anti-wear property than Ni-base alloy coating in different environmental mediums.

• Periodical: Advanced Materials Research (Volumes 834-836)
• Pages: 644-648
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.834-836.644
• Online since: October 2013
• Authors: Bin Cai, Hua Bing Li, Ye Fa Tan*, Hong Wei Li, Qi Feng Jing, Zhong Wei Zhang
• Keywords: Anti-Friction, Anti-Wear, Composite Coating, Environmental Medium, Ni-Base Alloy

References

[1] R. GONZÁLEZ, M.A. GARCÍA, I. PEÑUELAS, et al: Wear, Vol. 263(2007), pp.619-624.

[2] S. LIU, X. ZHENG, G. GENG: Materials and Design, Vol. 31(2010), pp.913-917.

[3] Z. ZHANG, Z. WANG, B. LIANG: Tribology letters, Vol. 37(2010): pp.141-148.

[4] X. H. WANG, M. ZHANG, X. M. LIU, et al: Surface & Coatings Technology, Vol. 202(2008), pp.3600-3606.

[5] B. CAI, Y. TAN, Y. TU, et al: Transactions of Nonferrous Metals Society of China, Vol. 21(2011): 1741-1749.

[6] X. ZHANG, X. ZHANG, A. WANG, et al: Transactions of Nonferrous Metals Society of China, Vol. 19(2009): 85-92.

[7] B. CAI, Y. TAN, L. HE, et al: Transactions of Nonferrous Metals Society of China, Vol. 23(2013): 392-399.