DIAMOND SURFACE TREATMENT Russian patent published in 2016 - IPC C30B33/00 C30B33/02 C30B29/04 C01B31/06 H01L21/302 

FIELD: processes.

SUBSTANCE: method of treating the surface of the diamond includes positional relationship in one plane of the original surface of the diamond and the metal surfaces of steel, ensure direct contact of said surfaces, the heat treatment of the original surface of the diamond to a predetermined depth to provide the desired final surface of the diamond, thus providing for heating said surfaces to the temperature of formation of the eutectic iron alloy - carbon, soaking at this temperature and free cooling, and the metal surface of steel with a carbon content taking 3.9-4.1 wt. %, purity class-side surface of said contact surfaces is not less than 12, said contact surfaces is performed by their entire surface or locally according to predetermined final surface of the diamond, said heating surfaces is carried out in a nitrogen atmosphere or an inert gas at a temperature of 1090-1135°C, at a predetermined rate, holding at this temperature is performed for a time determined by the expression: t_vyd=d/f(T,(N_es-N_c)), where d - the predetermined depth of thermal treatment of the original surface of the diamond, m, N_es - carbon content of the iron eutectic alloy - carbon of the original surface of the diamond and the metal surfaces of steel, by weight. %, N_c - carbon content of the metal surface of steel, by weight %, f(T,(N_es-N_c)) - function of the speed of the initial heat treatment of the diamond surface to a predetermined depth from the surface of said heating temperature and the difference in the carbon content of the iron eutectic alloy - carbon and the metallic surface of the steel.

EFFECT: improving the quality of processing by reducing the surface roughness of the diamond.

5 cl, 1 dwg, 1 tbl, 21 ex