Features of Structure Formation During the Thermal Synthesis of Powders Carbide-Steels from Waste Sludge of Bearing Steels

Abstract

The peculiarities of structure and phase composition of the briquettes material obtained by thermal fusion of the mixture consisting of a powder slurry obtained by grinding rollers and cone bearings, titanium hydride and graphite. It was shown that after synthesis at temperatures of 1150÷1200 0С phase composition of the obtained alloy includes mainly phases of titanium carbide, cementite and α-Fe. When boron carbide introduced into the mixture too, the last dissociates during thermal synthesis, resulting along with titanium carbide in the alloy significant content boride phases - TiB, TiB2, Ti2B5 and FeB was identified. Keywords: carbon, thermal fusion, composite powder, titanium carbide, boron carbide slurry, the diffraction pattern of the phase composition.