FIELD: chemistry.
SUBSTANCE: inventions can be used in chemical and electronic industry. Method of obtaining aluminium α-oxide for obtaining sapphire monocrystal includes stage at which 100 weight parts of aluminium (I) α-oxide and 25-235 weight parts of aluminium (II) α-oxide are mixed. Aluminium (I) α-oxide has specific surface area from 0.1 to 5 m2/g and volume density 1.5 g/cm3 or more. Aluminium (II) α-oxide is formed from sintered particles and has specific surface area 1 m2/g or less and relative density 85% or higher, and each of sintered particles has volume 0.01 cm3 or more.
EFFECT: inventions make it possible to reduce quantity of adsorbed water, reduce crucible oxidation and increase efficiency of monocrystalline sapphire obtaining.
6 cl, 3 ex
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