FIELD: metallurgy. SUBSTANCE: composition has, wt. -% : amorphous boron 10-35; ammonium chloride 0.05-0.25; cuprous oxide 0.025-0.05, and corundum 64.7-89.925. EFFECT: enhanced quality of composition. 1 tbl
Authors
Dates
1994-05-30—Published
1991-12-02—Filed