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The phase and chemical compositions, structure, thickness, microhardness, operational properties of the VK8 hard alloy with multilayer coatings produced by the methods of diffusion titanizing, titanoalitizing, nitriding, nitridotitanoalitizing have been studied. The last two methods combine the nitriding at a temperature of 540°C for 20 h followed by titanizing or titanonitriding. It has been established...