Composite refractory foams

Details Composite refractory foams Composite refractory foams

1984-11-19

1985-12-17

Hayes, Lorenzo B.

Coating processes

Heat decomposition of applied coating or base material

Base material decomposed or carbonized

106122, 264 44, 427244, 427373, 428688, 428697, 428699, 501 82, 521 55, 521 77, D03D 300

Patent

active

045592446

ABSTRACT:
Non-oxide refractory foams, possessing controlled permeability and uniformity, are prepared by impregnating an organic polymer foam material with a fluid, particulate slurry of a first refractory material, drying, applying to the dried, impregnated material a second refractory material which has a lower melting point than the first refractory material and thereafter heating, at a temperature sufficient to cause melt infiltration of the second refractory material into the impregnated material, thus producing inert and dimensionally stable composite refractory foams having broad utility as particulate filters or carriers.

REFERENCES:
patent: 3090094 (1963-05-01), Schwartzwalder et al.
patent: 3097930 (1963-07-01), Holland
patent: 3175918 (1965-03-01), McGhan et al.
patent: 3345440 (1967-10-01), Googin et al.
patent: 3353994 (1967-11-01), Welsh et al.
patent: 3833386 (1974-10-01), Wood et al.
patent: 3845181 (1974-10-01), Ravault
patent: 3907579 (1975-09-01), Ravault
patent: 4004933 (1977-01-01), Ravault
patent: 4075303 (1978-02-01), Yarwood et al.

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