METHOD OF PRODUCTION OF THE POWDERS OF THE CHEMICAL ELEMENTS NITRIDES Russian patent published in 2007 - IPC C01B21/06 C04B35/58 

FIELD: aerospace industry; chemical metallurgy industry; tool-and-die industry; other industries; methods of production of the powders of the chemical elements nitrides.

SUBSTANCE: the invention is pertaining to production of the refractory materials and may be used in aerospace industry, chemical metallurgy, tool-and-die industry and other industries for the synthesis of the powders of the chemical elements nitrides used for manufacture of the products having the high thermal stability, hardness, wear-resistance, erosion resistance, resistance to the corrosive mediums action, stability of the physical properties in the wide temperature ranges and used in the various engineering fields. The substance of the invention consists, that the method of production of the powders of nitrides provides for preparation the exothermal mixture consisting of the azotizing chemical element, the inorganic azide and the haloid salt and the mixture ignition in the nitrogen medium under pressure. At that as the haloid salt use the complex fluoride salts of the following alkaline metals:_{Na2SiF6, Na3AlF6, KBF4, Na2TiF6. The technical result of the invention is the fact, that the method allows to synthesize the base products with the nitration degree close to 1, and also to produce the powders of nitrides of the high-degree purity and the improved crystal structure.}

EFFECT: the invention ensures synthesizing of the base products with the nitration degree close to 1, production of the high-degree purity powders of nitrides with the improved crystal structure.

2 tbl, 4 ex