The Effect of Laser Processed Nano-SiC-Ni Metal Ceramic on the Surface Properties of the Iron-Based Material

Abstract:

In this article, we have carried out the Ni based self fluxing alloy powder and studied the effect on the laser alloying of 45steel layer which contains different weight percentage of nano-SiC powders. Experimental results show that the alloy layer which obtained by the optimized laser alloying process parameters (I = 38A, V = 100 mm / min, Δf=10mm, Ar gas protection) is smoothness, fineness, hardness and have a good metallurgical bonding. The test of tribological wear experiments shows that the wear capability of Ni-based powder made of laser alloyed layer is more excellent than that of the hardened 40Cr steel. And the tribological wear capability of the Ni-based alloy with SiC made of laser alloyed layer has been further improved. In the same process conditions, the addition of 20% nano-SiC is the best.Salt spray test shows that both the Ni and Ni/SiC composite coatings' corrosion is much stronger than that of the 45steel substrate. But with the added amount of nano-SiC increased the resistance of alloying layer corrosion decreased slightly. Finally, this paper use Grey comprehensive evaluation model to value the quality of the alloy layer. The evaluation vector shows that the laser alloyed layer which added 20% SiC has optimal overall performance.

• Periodical: Applied Mechanics and Materials (Volumes 52-54)
• Pages: 953-958
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.52-54.953
• Online since: March 2011
• Authors: Ming Lin You
• Keywords: Appraisal System, Grey Relation Evaluation Theory, Laser Alloying, Metal-Ceramic, Silicon Carbide (SiC)

References

[1] Vaziri,A.; Shahverdi, H.R.; Shabestari, S.G.; Torkamany, M.J.; Effect of beam interaction time on laser alloying with pulsed Nd-YAG laser; Materials Science and Technology, Volume 25, Number 10, October 2009 , pp.1234-1237(4).

DOI: 10.1179/174328408x372065

[2] Xiao-bin Zhang, Chang-sheng Liu, Xiao-dong Liu, Jiang Dong and Bo Yu; Cavitation erosion behavior of WC coatings on CrNiMo stainless steel by laser alloying; International Journal of Minerals, Metallurgy and Materials Volume 16, Issue 2, April 2009, Pages 203-207.

DOI: 10.1016/s1674-4799(09)60034-0

[3] A. Moshkovith, V. Perfiliev, I. Lapsker; N. Fleischer,R. Tenne, L. Rapoport. Friction of fullerene-like WS {sub}2 nanoparticles: effect of agglomeration[J]. Tribology Letters 2006 24(3): 225-228.

DOI: 10.1007/s11249-006-9124-6

[4] Shi-Quan Lai, etal. The tribological properties of PTFE filled with thermally treated nano-attapulgite. Tribology International 2006 39(6): 541-547.

DOI: 10.1016/j.triboint.2005.03.016