Abstract

The paper examines the potential for increasing the corrosion resistance of composite electrolytic and galvanophoretic coatings under thermal treatment. The corrosion behavior of the coatings in a 3% NaCl solution is analyzed under various conditions of thermal treatment. It is established that thermal treatment of composite electrolytic Ni-B and Ni-Ti coatings has no effect on the corrosion resistance of the electrolytic coating itself or that placed on a substrate. At the same time, the galvanophoretic Ni-B-Mo 2 C coating shows high corrosion resistance after thermal treatment at 1100°C owing to the obliteration of porosity during liquid-phase sintering.

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