|
Electroless nickel (EN) coatings, have strong effects on surface properties especially on corrosion and wear resistance of coated materials. Tensile or compression stresses form in the EN coating due to the phosphorus ratio of coating. It is known that the tensile or compression stresses on the surfaces effect fatigue strength and other mechanical properties of coated materials. In this study, the plain carbon steel specimens were coated using EN solutions with low, medium and high-phosphor ratios. The coated and uncoated specimens were fatigue tested in the same conditions. The effect of phosphorus ratio of coating on the fatigue strength of plain carbon steel has been determined. It was found that, EN coatings with low and high-phosphorus ratio decreased fatigue strength of the plain carbon steel. The fatigue strength of specimens coated with EN solution with medium-phosphor ratio has been increased relatively. |