Increasing Wear Resistance of Power Steering Pump Cam Using Ni-Cr-Fe and Ni-Cr-Fe-B Coatings

Abstract:

Thermal depositions are very wide spread in the industry of coating techniques. The materials used as coatings for several applications must have the ability to produce a stable, slow-growing surface coating, in order to provide good service behavior. This paper presents a method to increase the wear resistance of steering pump cam, strongly stressed having premature wear effects. The method that the authors use is atmospheric plasma deposition with Ni-Cr-Fe and Ni-Cr-B-Fe powders on steel substrate. It was investigated the morphology and physico-mechanical properties (scratch and micro-indentation analysis). Results showed a comparison between those two coatings with the metallic substrate. It has been found that the deposited coatings have an adherent, dense and uniform layer with a typically molten morphology. By increasing the coefficient of friction we can obtain higher wear resistance and recommend the optimum solution for further researches.

• Periodical: Materials Science Forum (Volume 907)
• Pages: 145-150
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.907.145
• Online since: September 2017
• Authors: Cristian Stescu, Corneliu Munteanu, Dorin Luca, Bogdan Istrate, Marcelin Benchea, Daniela Lucia Chicet, Bogdan Oprisan*
• Keywords: Morphology, Ni-Cr-B-Fe Powder, Ni-Cr-Fe Powder, Plasma Deposition, Scratch Analysis, X-Ray Diffraction (XRD)

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