METHOD OF OBTAINING COMPOSITE MATERIAL Al-AlO Russian patent published in 2014 - IPC C04B35/65 C04B35/117 B22F3/23 

FIELD: chemistry.

SUBSTANCE: method of obtaining a composite material Al-Al₂O₃ relates to a technology of composite materials - cermets and can be used for obtaining sealing elements, applied for tight connection of components and constructions in high-temperature power installations. In accordance with the claimed method an aluminium powder (grade PAP-2) is preliminarily thermally processed in air to remove stearine from the surface of its particles. After that, it is granulated by mechanical processing in a planetary mill for 15-180 minutes with a ratio of the powder weight to the weight of hard alloy spherical bodies from 1:20 to 1:25, thermal processing of the filler from the granules was performed in vacuum at a temperature of 500-600°C for 45-60 minutes with further pressing of the blank under pressure 400-600 MPA. The obtained blank was heated by an air heat carrier up to a temperature of 550-600°C to initiate the process of self-propagating high-temperature synthesis (SHS) with further isothermal exposure for 30-60 minutes and cooling of the heated product in air at room temperature.

EFFECT: method makes it possible to obtain the material with high ability to plastic deformation with preservation of high strength.

4 cl, 3 ex, 1 tbl