Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By mechanically introducing gas into material
Patent
1986-06-24
1990-06-19
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By mechanically introducing gas into material
264 63, 264 71, 264 86, 264 87, C04B 3328
Patent
active
049351788
ABSTRACT:
The method of molding a ceramic product by forming a mixture of ceramic fibers with lengths less than one-fourth inch, water and a deflouculent, the mixture having a consistency which will not flow, placing the mixture in a water-absorbing mold, vibrating the mold to cause the mixture to flow into contact with the mold and eliminate voids in the mixture, allowing a portion of the water of the mixture to be absorbed by the mold leaving a hardened remnant in the mold, removing the hardened remnant from the mold, and heating the hardened remnant to sinter the fibers therein to each other. In one example, granular alumina is mixed with the mass of fibers, water and the deflouculent to form the mixture.
REFERENCES:
patent: 3216841 (1965-11-01), Thellmann
patent: 3500444 (1970-03-01), Hesse et al.
patent: 4117055 (1978-09-01), Alexanderson
Baer et al., In Vitro Degradation of a Ceramic-Ceramic Composite, in Ceramic Bulletin, vol. 57, No. 2 (1978).
Esposito Arthur N.
Wolter Peter A.
Derrington James
General Signal Corporation
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