FIELD: metallurgy.
SUBSTANCE: proposed method comprises mixing of cryolite and the mix of nano-dispersed powder of oxides of niobium, titanium, zirconium, tantalum with mixing agent and further compaction of said mix. Cross-linking agent represents aqueous solution of glyoxal (40%). Note here that obtained pasty mix is compacted by screw pelletiser to cylindrical pellets to be dried for 3 hours at 80°C at the following ratio of components, in wt %: cryolite - 79-81, niobium oxide - 3-4, titanium oxide - 3-4, zirconium oxide - 4-3, tantalum oxide - 1-2, aqueous solution of glyoxal (40%) - 5-7.
EFFECT: higher physical and mechanical properties, decreased amount of cast rejects.
2 ex, 1 tbl, 1 dwg
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