Abstract
Nickel-plated powders and coatings of titanium and chromium carbides and borides are studied. Components of the starting powders react between themselves and with oxygen from the atmosphere forming solid solutions, intermetallic compounds, and a shielding oxide film. During pulverization the surface of particles does not lose a plated layer and nickel metal is always available in the coating. In order to increase the life of coatings it is advisable to use powders with the minimum possible amount of oxygen which promotes decomposition of higher carbide. In order to reduce the amount of complex oxides and intermetallic compounds in the coating which make a brittle matrix it is recommended to use boride powders in a mechanical mixture with metal (alloy) powders.
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