METHOD OF PRODUCTION OF COMPOSITE MATERIAL AlO-Al Russian patent published in 2008 - IPC C04B35/65 C04B35/00 B22F3/23 

FIELD: chemical industry; other industries; methods of production of the composite material Al₂О₃-Al.

SUBSTANCE: invention is pertaining to the production process of composite materials and may be used for production of strong, wear-resistant products and also for manufacture of the abrasive tools. For production of the composite material Al₂O₃ aluminum powder consisting of the_{laminate particles was exposed to the thermal treatment in the open air at the temperature of 220-250°С for 2-3 hours for removal of the stearinic coating from the surface of its particles and mixed with the water solution of the water glass taken in the amount of 3-15 mass % in terms of the dry residue of the material. The mixture was dried up to the complete removal of moisture and molded from it the workpiece under pressure of 620-700 MPa. Workpiece was heated UP by the air heat-carrier medium to the temperature of 610-650°С for initiation of drying up process and was aged at this temperature for 1-5 hours, after that the product was cooled in the open air at the room temperature. Density of the products - 2.15-2.50 g/cm³, transverse strength - 320-370 MPa, Brinell hardness number - 47-55. Technical result of the invention is the increased strength and hardness of the material and simplification of the method of its production.}

EFFECT: invention ensures the increased strength and hardness of the material, simplification of the method of its production.

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