Tribological Test and Mechanical Properties of Electrodeposited Nickel Coating on the Metal Surface of Carbon Steel 4140

Wear and corrosion are the main problems in mechanical elements in mechanical contact and therefore there are economical losses. To enhance the tribological properties of the metallic materials, nickel coating has found a wide application in aerospace, automobile, chemical industries and other. In this research nickel coating on carbon steel substrate were developed using nickel sulfamate bath and Watts nickel bath to obtain homogeneous electrodeposits so as good adherence and nonporous material. Nickel is one of the most used metals in the nuclear industry as well as in conventional industry, so it is important to study its morphological composition and its mechanical properties. The crystal structure of nickel: It is distributed in two phases, gamma (γ) and gamma prime (γ›): -Gamma phase: solid solution centered on the faces that acts as a matrix. Gamma prime phase: dispersion of ordered intermetallic precipitates, responsible for the great resistance of the super-alloys. Experimental development