Molten salt leach for removal of inorganic cores from directiona

Details Molten salt leach for removal of inorganic cores from directiona Molten salt leach for removal of inorganic cores from directiona

1977-09-19

1979-07-24

Caroff, Marc L.

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 21, 134 22R, 134 26, 134 34, 164132, B08B 308, B08B 310

Patent

active

041621735

ABSTRACT:
Cores made of either Y.sub.2 O.sub.3, Y.sub.3 Al.sub.5 O.sub.12, LaAlO.sub.3, MgAl.sub.2 O.sub.4 or Al.sub.2 O.sub.3 are removed from castings of advanced superalloy materials by immersion in a molten salt bath of either Li.sub.3 AlF.sub.6 or a mixture of CaF.sub.2 -NaF.

REFERENCES:
patent: 3011233 (1961-12-01), Kirtchik
patent: 3563711 (1971-02-01), Hammond et al.
patent: 3809147 (1974-05-01), Raymond et al.
patent: 3957104 (1976-05-01), Terpay

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