METHOD OF MAKING CERAMICS Russian patent published in 2024 - IPC C04B35/573 

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used in production of parts from ceramic SiC in industrial production. Method of making ceramics involves preparing a mixture containing silicon carbide, silicon and boron, moulding workpieces, carbonisation and reaction sintering in the temperature range of 1,100–1,500 °C. Reaction sintering of components is carried out at temperature of 1,100 °C followed by holding for at least 60 minutes for recrystallization of SiC particles and formation of secondary SiC, then stepwise is heated first to temperature of 1,250 °C followed by holding for at least 40 minutes, and then in the temperature range from 1,450 °C to 1,500 °C is held for at least 30 minutes to form a liquid melt of silicon borides SiB₃ and SiB₆, which, along with SiC particles, are used to fill cavities and pores in the ceramics, and then the ceramics is cooled to room temperature.

EFFECT: reduced porosity in ceramics.

1 cl, 1 ex