METHOD FOR OBTAINING A WEAR-RESISTANT COMPOSITE MATERIAL BASED ON SILICON CARBIDE Russian patent published in 2021 - IPC C01B32/28 C01B32/956 C04B35/528 C04B35/565 

FIELD: composite materials.

SUBSTANCE: invention relates to the field of obtaining superhard composite materials and can be used in the manufacture of abrasive tools. For the manufacture of a workpiece with a diamond-containing phase, a diamond-lonsdaleite abrasive in the amount of 30-50, wt. %, is used as a diamond-containing phase with a particle size of 30-250 mcm, and to obtain a silicon carbide base, a mixture of green silicon carbide powders with a particle size of 5-9, 26-30, 38-42 mcm in the ratio (0.5-1.5) : (6-8) : (11-13). Then the workpiece is heat-treated and impregnated with silicon melt at 1550 ± 50°C for 1 hour in the backfill of crushed silicon wafers.

EFFECT: resulting wear-resistant composite material based on silicon carbide is characterized by a Young’s modulus of 520-620 GPa, wear resistance of 47-58.5⋅10^-15 and the thickness of the graphitized layer on the particles of the diamond-containing component of 12-15 mcm.

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