THE INFLUENCE OF CURRENT DENSITY OF DEPOSITION ON THE PROPERTIES OF THE COATING ALLOY Cr-W-P
Cr-W-P coating was deposited from the bath based on water-DMFA mixture at current density 0,15-0,45 A/cm2. It was shown that at higher current density phosphorous content is increasing and tungsten content is decreasing. Maximum current efficiency was reached at 0.35 A/cm2.Hydrogen absorption by the coatings is increasing at higher current destinies, however hydrogen may be removed from the coatings by thermal treatment Porosity of the coatings is decreasing at higher current densities and reaches minimum value after thermal treatment. Maximum hardness was observed for coatings deposited at 0,35 A/cm2 and subjected to thermal treatment and for coatings deposited at 0,45 A/cm2 as-plated.