X-Ray Diffraction Analysis of Tungsten-Free Carbide Electroerosive Powder Materials

Purpose. Conducting an experiment aimed at the study of new tungsten-free carbide electroerosive materials (phase composition) obtained on the basis of waste alloy grade KNT16 in an oxygen-containing working fluid.

Methods. To obtain new experimental tungsten-free carbide electroerosive materials (charges), an electroerosive dispersion unit was used. As a material for processing, the waste of a tungsten–free hard alloy of the KNT16 brand in the form of spent turning and milling plates was selected, distilled water was used as a working fluid. After receiving the electroerosive material, its phase composition was studied by X-ray diffraction using the Rigaku Ultima IV X-ray diffractometer.

Results. During the study, it was experimentally established that the dispersion by electroerosion of the waste of the KNT16 alloy in distilled water leads to the formation of a charge with the following phase composition: TiC, MoNi₃, Ni, Mo, as well as Ni₂O₃, which is formed as a result of the interaction of nickel with oxygen contained in the working fluid. This study confirms the influence of the chemical composition of the working fluid on the phase composition and properties of the resulting erosion material.

Conclusion. The results obtained allow us to conclude that the dispersion by electroerosion of the KNT16 alloy in an oxygen–containing working fluid - distilled water leads to the formation of a charge with a phase composition that allows it to be used as a starting material for the production of new tungsten-free hard alloys.

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