Forming a ceramic by flocculation and centrifugal casting

Details Forming a ceramic by flocculation and centrifugal casting Forming a ceramic by flocculation and centrifugal casting

1984-05-15

1986-11-25

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 56, 264311, 501 1, 501 97, 501103, 501105, B28B 120

Patent

active

046248080

ABSTRACT:
A ceramic is fabricated by dispersing ceramic particles in a liquid, sedimenting the dispersion to remove large particles, and then changing its pH to flocculate the dispersed particles. The size distribution of the particles in each individual floc is similar to the size distribution of particles throughout the dispersion. The supernate is removed and the flocs are cast by centrifuging them into a mold. The cast flocs are dried and sintered to form the ceramic. To provide a multiphase ceramic, particles of two or more ceramics can be mixed together and flocced prior to centrifuging.

REFERENCES:
patent: 1680832 (1928-08-01), Wilder
patent: 2714227 (1955-08-01), Graham et al.
patent: 3133792 (1964-05-01), Jones, II
patent: 3497367 (1970-02-01), Gaskin et al.
patent: 4316964 (1982-02-01), Lange

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