Microstructure and Corrosion Resistance of Free-Sprayed Ni60 Coating Prepared by High Frequency Induction Heating

Abstract:

In order to improve corrosion resistance of widely used carbon steels, self-fusion Ni60 alloys coating was prepared by free-spraying and induction heating, taking 45 steel as substrate. The microstructure and corrosion resistance of the coating and the elements diffusion cross the interface between the coatings and the substrate were analyzed. The results indicate that Ni60 coating free from cracks is obtained by free spraying and induction heating. The microstructure of the Ni60 coated substrate consists of top surface, intermediate layer, dendritic crystal zone and lamellar zone from outside to inside. The corrosion resistance of Ni60 coatings is markedly superior to that of the substrate in acid and alkali solution, and surpasses stainless steel in reductive and alkali solutions

• Periodical: Advanced Materials Research (Volumes 97-101)
• Pages: 1489-1492
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.97-101.1489
• Online since: March 2010
• Authors: Hong Xia Zhang, Cheng Luo, Hong Li Zhao, Guang Feng
• Keywords: Corrosion Resistance, Induction Heating (IH), Interface, Microstructure, Ni60 Alloy

References

[1] C. O. Paul, H. Alemonhammad and E. Toyserkani: Mater. Sci. Eng. Vol. 464 (2007), p.170.

[2] H. X. Zhang, H. L. Zhao and C. Luo: Heat. Treat. Met. In Chinese. Vol. 33 (2008), p.129.

[3] J. B. Jiang, N. Dong and D. Y. He: Chin J Rare Met. Vol. 30(2006), P. 34.

[4] P. Zhang, Y. P. Wu and P. H. Lin: J Chin Corros Prot. Vol. 26(2006), P. 197.

[5] Q. L. Yuan and Z. J. Su: Mater Heat Treat. In Chinese. Vol. 38(2009), P. 72.

[6] J. Y. Hou, J. Q. Xu, and C. Zhao: Plat. Surf. Finish. Vol. 29(2007), p.15.

[7] Z. J. Su. Q. L. Yuan and H. L. Mao: Found Technol. In Chinese. Vol. 30(2009), p.551.

[8] Allison and D. E. Diss.: Abstr. Int. J. Fatigue. Vol. 12(1990), p.72.

[9] Information on http: /www. calphad. com/nickel-chromium. html.