FIELD: chemistry.
SUBSTANCE: invention can be used in chemical and electronic industry. The volume per particle of α-aluminium oxide for producing monocrystalline sapphire is not less than 0.01 cm3, relative density is not less than 80%, bulk density of the aggregate is 1.5-2.3 g/cm3, and its shape is any one of spherical, cylindrical and briquette-like.
EFFECT: invention reduces the amount of adsorbed water, reduces crucible oxidation and improves the efficiency of producing monocrystalline sapphire.
3 cl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| α-ALUMINUM OXIDE POWDER | 2007 |
|
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|
RU2107662C1 |
