Method of casting powder materials

Details Method of casting powder materials Method of casting powder materials

1990-01-16

1991-07-02

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264344, 419 61, 419 66, C04B 4100

Patent

active

050283634

ABSTRACT:
A method of casting a powdered material. A slurry is formed by dispersing metal powder or ceramic powder into a dispersing medium mainly consisting of a substance extractable by a liquid or supercritical carbon dioxide and having a melting point between 0.degree. C. and 100.degree. C., and the slurry is poured into a liquid non-absorbing mold where the slurry is cooled to freeze and solidify into a molding. The main constituent of the dispersing medium in the molding is extracted and removed by the liquid or supercritical carbon dioxide.

REFERENCES:
patent: 4428895 (1984-01-01), Blasch et al.
patent: 4731208 (1988-03-01), Nakajima et al.

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