ELECTRICAL-PROPERTIES OF NICKEL MATRIX COMPOSITE ELECTROCOATINGS

The electrical properties of composite nickel matrix electrodeposits p repared under direct current (DC) and pulse current (PC) regimes, are presented in this work. The codeposition of liquid-containing microcap sules (mu caps) along with the metal matrix from electrolytic baths ha s led to the development of electrocoatings with pre-specified propert ies. The behaviour of oil-containing polymeric wall mu caps in the nic kel matrix for self-lubrication during fretting and cooling during tra nsient contact operation has been investigated. Different preparation conditions have been employed. Their contact resistance and interfacia l temperature have been monitored under constant axial contact force u sing low current excitations. SEM and XRD analysis were applied for th e examination of inter-electrode surfaces towards investigating their structural characteristics.