Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-24T12:06:14.683Z Has data issue: false hasContentIssue false

Fabrication and synthesis of electroless nickel-phosphorus coatings reinforced by incorporated chromium carbide-nickel-chrome particles

Published online by Cambridge University Press:  23 September 2011

Get access

Abstract

An investigation was conductedtoinspectthewearandfabrication of chromium carbide-nickel-chrome particles incorporated into the nickel phosphorus. St37 steel was selected to be the base and a comparison between the base and coating properties was made. The optimized parameters regarding efficiently coating the second phase particles, such as deposition rate and particle distribution in the surface and cross-section, were determined. The best heat treatment cycle for obtaining maximum hardness and wear resistance was heating the samples for one hour at 400 °C in a furnace and cooling them all to room temperature. Evaluation and inspection of the final coated samples was conducted by X-Ray Diffraction and Scanning Electron Microscopy equipped with an EDAX analyzer and microhardness tester. Composite coatings containing 22% chromium carbide nickel-chrome as the second phase showed the highest wear resistance on a low Carbon steel base, in comparison with other electroless composite coatings and electroless Ni-P, and after heat treatment for one hour at 400 °C, these coatings with 40 µm average thickness had microhardness of nearly 1000 Vickers.

Type
Research Article
Copyright
© EDP Sciences, 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Feldstein, N., Annual. Metal. Fin. 20 (1990) 516-524
Duncan, R.N., Plat Surf. 83 (1996) 55-58
Narayanan, J.N., J. Appl. Electrochem. 33 (2004) 807-816
Amell, M., Surf. Coat. Tech. 201 (2005) 389-395
Bapu, R., Mohan, S., Plate Surf. Fin. 82 (1995) 86-88
Bapu, R., Kate, G.N., Met. Fin. 92 (1994) 37-39
Izzard, M., Dennis, K., Trans. Inst. Met. Fin. 65 (1987) 85-89
Li, Y., Plat. Surf. Fin. 84 (1997) 76-82
Roy, M., Pauschitz, A., Wear 257 (2004) 799-811
Zeng, Y.S., Electrochimica Acta 49 (2004) 4313-4319
G.G. Gawrilov, Chemical (Electroless) Nickel Plating, 2nd edn, London, Portcullis P., Vol. 50, 1979
Yoon, W., Park, H., Microelec. Eng. 84 (2007) 2552-2557