Production of electrodes by spark plasma sintering method of secondary powder materials

Abstract

The article considers the practical possibility of manufacturing electrodes from secondary powder materials. Obtaining electrodes with desired properties suitable for electrospark alloying processes. Bronze powder obtained from waste metal scrap by electroerosive dispersion was used. The following equipment was also used: spark plasma sintering system SPS 10-3 from Thermal Technology, drying cabinet ShS-80-01 SPU, set of sieves according to GOST 2715—75, analytical balance Acculab ALC-210d4, XRD-6000 Shimadzu diffractometer, X-ray fluorescence spectrometer Niton XL3t 900 GOLDD+. Secondary bronze fine powder was subjected to pressure sintering in an SPS 10-3 spark plasma sintering system from Thermal Technology. The maximum temperature was 910 °C, pressure — 40 MPa. Materials before and after were examined for elemental composition. The resulting briquette was cut into electrodes, and test surfacing was carried out by the method of electrospark alloying. Using spark plasma sintering, it is possible to obtain electrodes from secondary bronze powder materials suitable for electrospark alloying processes.