Microstructure and Phase Composition of Electroerosion Materials Based on Bronze Used for the Application of Metallization and Galvanic Coatings

A study of the phase composition of powder materials obtained by the electroerosion dispersion of BrC30 lead-bronze metal waste in distilled water is carried out. The preparation of metal materials of microfractions and nanofractions is carried out using an electroerosion-dispersion unit. The filings are placed in the reactor of the installation, which is filled with distilled water (an oxygen-containing medium). The following operating modes of the installation are set: pulse repetition rate of 95−105 Hz, voltage applied to the electrodes of 190−200 V, capacitor capacitance of 65.5 μF. At the places where the discharges occur, the temperature increases, and the materials melt and evaporate, which leads to the formation of fine particles. The phase composition of the powders is studied by X-ray diffraction on a Rigaku Ultima IV diffractometer. It is established that the main phases in the resulting electroerosion materials are Cu, Pb(Cu2O2), Pb5O8, Pb. The resulting powder materials can be used for metallization and galvanic coatings.