Abstract
The study covers the formation of structure and properties during infiltration, pressureless and spark plasma sintering in Cu – (12,5÷37,5 vol.%) Ti 3 SiC 2 powder materials using electron microscopy, X-ray phase and energy dispersive analysis methods. The paper determines the independence of composite material (CM) phase composition from the sintering method and the temperature within 900–1200 °C. Special aspects of CM structure formation during sintering include deintercalation of silicon from titanium carbosilicide, formation of a solid carbon solution based on titanium silicide Ti 5 Si 3 (С), small amounts of titanium carbide, silicon carbide and silicide TiSi 2 . The increased concentration of Ti 3 SiC 2 in CM leads to a certain decrease in electrical conductivity, but also to a significant increase in hardness, strength and wear resistance of the electroerosion electrode composites for EDM.
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