METHOD OF PRODUCING SINTERED CORUNDUM-BASE ABRASIVE MATERIAL Russian patent published in 1996 - IPC

Abstract RU 2061011 C1

FIELD: abrasive powders. SUBSTANCE: boehmite sol is prepared where seeding crystallization and sintering modifying agent were added. Then gel-formation is carried out. Gel is dehydrated and the solid xerogel is obtained. Abrasive grains were formed from xerogel followed by their calcination and short-time sintering. Aluminium nitride grains were added to the boehmite sol (0.5-30% as measured for corundum). Before addition to the boehmite sol the grains of aluminium nitride were subjected for calcination at 1250-1350 C in the air medium up to mass increase by 0.2-0.6%. EFFECT: improved method of abrasive material producing. 2 tbl

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RU 2 061 011 C1

Authors

Mogilevskij V.I.

Molchanov S.A.

Kazakov V.G.

Kaplan F.S.

Ermakova V.G.

Dates

1996-05-27—Published

1992-11-02—Filed