METHOD OF MAKING ARTICLES FROM DIAMOND-CONTAINING COMPOSITE MATERIALS Russian patent published in 2015 - IPC C04B35/528 B24D3/14 

FIELD: chemistry.

SUBSTANCE: invention relates to diamond-containing composite materials which are widely used to make diamond tools: cutters, smoothers, supports, draw plates etc. The method includes preparing moulding material based on ultra-fine diamond powder and a temporary binder, moulding a porous workpiece at room temperature, heating the obtained workpiece to temperature of full removal of volatile substances from the temporary binder and soaking the workpiece with liquid silicon. According to the disclosed engineering solution, soaking with liquid silicon is carried out via capillary condensation of silicon vapour at temperature of 1300-1450°C and reactor pressure of not more than 36 mmHg, wherein the temperature of the silicon vapour is higher than that of the workpiece. In the preferred version of the method, the moulding material is prepared based on diamond powder in a capsule of pyrocarbon.

EFFECT: simple method of making articles from diamond-containing composite materials while preserving functional properties thereof.

2 cl, 1 tbl, 11 ex