Alumina shell molds used for investment casting in directional s

Details Alumina shell molds used for investment casting in directional s Alumina shell molds used for investment casting in directional s

1979-12-26

1981-01-27

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 65, 264 65, B28B 734

Patent

active

042473330

ABSTRACT:
An alumina investment casting mold has a microstructure characterized by the porous nature of the interconnecting alumina grains which is indicative of alumina-silica molds fired in a reducing atmosphere to remove the silica.

REFERENCES:
patent: 4131475 (1978-12-01), Svec
patent: 4187266 (1980-02-01), Greskovich et al.

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