Peculiarities of Formation of Phase and Elemental Composition during Electrospark Alloying Using a Manual High-Frequency Vibrator

The phase and elemental compositions of electrospark coatings of nickel and titanium deposited on steel, nickel, and titanium, that is, coatings from TiNiMo-20 and WC92-Co8, on steel during high-frequency electrospark alloying are investigated. It is established that the material of the electrode, of the substrate, and the modes of deposition have the main impact on the physical and chemical properties of the formed coatings. A positive influence of high-frequency alloying on the quality indicators of the processed surfaces is shown. Both the phase and chemical analyses showed availability of the compounds considerably improving the corrosion resistance of the processed surfaces. Alloying with WC92-Co8 electrodes at a high frequency makes it possible to obtain an increased content of tungsten carbide in the deposited layer.