| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: according to procedure there is used source charge containing sodium fluoride, potassium chloride, scandium oxide or fluoride, aluminium fluoride, hydro-fluoride of potassium and oxy-fluoride of zirconium and/or hafnium. Charge is mixed with metal aluminium to maintain weight ratio of components of charge to aluminium, as 1:0.8-1.1. Produced mixture is loaded into a crucible and is heated to temperature 800-900C. Further, there is carried out alumino-thermal reduction at melt mixing. Melt is conditioned during 15-30 min and salt melt and liquid metal are poured separately into moulds. Source charge contains components at the following ratio, wt %: oxide or fluoride of scandium 4.312.0, aluminium fluoride 5.08.0, sodium fluoride 14.518, potassium hydro-fluoride 13, zirconium and/or hafnium oxy-fluoride 815.4, potassium chloride - the rest. ^ EFFECT: improved modifying effect of alloying components, simplified process and reduced rotation of salts. ^ 2 cl, 6 ex, 1 tbl |
