Abstract
Electrodeposited chromium -silicon carbide was deposited from chromium (III) sulfate -potasium formate solutions containing from 4 to 50g/L of silicon carbide having particle sizes 0.5 and 5μm.
It was possible to deposit a composite containing about 3.6wt% of particles. After optimum heat treatment in air, the maximum hardness was 1650Hv for trivalent chromium coatings, and 1550Hv for the composite coatings.
Wear characteristics were examined by a plane-reciprocating abrasive wear method.
The wear resistance characteristics obtained for the chromium-silicon carbide coatings in the heat treated condition were better than those of the heat treated trivalent chromium and hexavalent chromium coatings.
