METHOD OF OBTAINING ALUMINIUM NITRIDE IN BURNING MODE Russian patent published in 2014 - IPC C01B21/72 

FIELD: chemistry.

SUBSTANCE: method of obtaining aluminium nitride includes the preparation of a mixture of aluminium and aluminium nitride powders in a ratio of 1÷5-1÷2 and one or some additives, selected from the group AlF₃, Na₃AlF₆, NH₄Cl, NH₄F, (NH₄)₃AlF₆, or a mixture of aluminium powder and an additive of ammonium hexafluoroaluminate or a mixture of ammonium hexafluoroaluminate and ammonium chloride or fluoride, placement of the obtained mixture in a closed reactor, local inflammation of the mixture and synthesis in a burning mode under the pressure of nitrogen of 0.2-5 MPa.

EFFECT: invention makes it possible to obtain powder of aluminium nitride with an equiaxial or spherical shape of particles of high purity and a broad range of values by the particle size and specific surface.

2 cl, 1 tbl, 6 ex