Fatigue behaviour of nickel-flyash composite coatings
01 Oct 1993-Journal of Materials Science Letters (Kluwer Academic Publishers)-Vol. 12, Iss: 10, pp 746-746
About: This article is published in Journal of Materials Science Letters.The article was published on 1993-10-01. It has received 3 citations till now. The article focuses on the topics: Composite number & Carbon steel.
TL;DR: In this paper, a theoretical model was used to predict the wear rates of the composite coatings and the predicted wear rates were in reasonable agreement with the experimental values, however, they did not consider the effect of load and sliding speed on both the coefficient of friction and wear rates.
TL;DR: In this paper, the wear rates of nickel-fly ash composite coatings on mild steel have been measured for unlubricated rubbing against a rotating hardened steel disc, and wear losses of composite composites were lower than those of nickel coating.
TL;DR: In this paper, the electrochemical behavior of sediment electrodeposited nickel-silicon nitride composite coatings on mild steel has been studied, and it was shown that the higher the percentage of silicon nitride in the composite, the better is the corrosion resistance.
Abstract: The electrochemical behaviour of sediment electrodeposited nickel-silicon nitride composite coatings on mild steel has been studied. These composite coatings provide better corrosion resistance in both 3.5% NaCl and 0.5M H2SO4 solution than nickel coatings. The higher the percentage of silicon nitride in the composite, the better is the corrosion resistance. Microstructural studies on these composite coatings have revealed the retention of silicon nitride particles in the coating after corrosion tests, which was indicative of very little or no galvanic corrosion. A reduced tendency to pitting of the composite coatings as compared to nickel coatings was also observed. X-ray analysis of composite coatings exposed to 0.5M H2SO4 revealed the presence of silicon dioxide in them, leading to enhanced passivation of the composite coatings with respect to pure nickel.