FURNACE CHARGE FOR PRODUCTION OF ALUMINUM OXYNITRIDE Russian patent published in 2005 - IPC

FIELD: production of high-refractory ceramic materials.

SUBSTANCE: the invention is pertaining to the field of production high-refractory ceramic materials, in particular, to production of aluminum oxynitride, which may be used as a component of ceramics and cermet for manufacture of cutting tools, heat-resistant and heat-conducting components of constructions, and also in thee oxidizing mediums instead of aluminum nitride and in a combination with it. The technical result of the invention is reduction of the end product cost price due to utilization of the more low-cost components. The premixed source charge consisting of an aluminum powder with the size of the specific surface area less than 0.01 m²/g with the content of the main substance of 79.4-99.8 mass % and a powder of aluminum oxide with the size of the specific surface less than 2.2 m²/g, burn in the air. The components are taken in the following ratio (in mass %): aluminum powder - 5-20, a dust of aluminum oxide - the rest.

EFFECT: the invention ensures reduction of the end product cost price.

2 cl, 1 ex, 1 tbl