Ceramic material permitting the passage of fluids and based on s

Details Ceramic material permitting the passage of fluids and based on s Ceramic material permitting the passage of fluids and based on s

1989-02-14

1992-03-03

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Pore-forming

501154, 2105101, 502232, 502439, 428613, 266220, 266227, 264 56, 264 59, C04B 3800

Patent

active

050932896

ABSTRACT:
A ceramic material made of a skeleton reaction-bonded silicon powder is distinguished by an open-cell pore structure produced by using a matrix of an appropriately shaped polyurethane foam structure. For the preparation, a foam matrix is coated with a suspension of silicon powder, synthetic resin and solvent and is subjected to a heat treatment, during which the foam matrix is expelled and the silicon is stabilized. The thermally and chemically stable product can be used, for example, as a filter medium for metal melts, as a catalyst carrier, or as a boundary medium between the flame zone and unignited combustible mixtures in burners.

REFERENCES:
patent: 4265659 (1981-05-01), Blome
patent: 4477493 (1984-10-01), Parkinson et al.
patent: 4564496 (1986-01-01), Gupta et al.
patent: 4597923 (1986-07-01), Kennedy
patent: 4774217 (1988-09-01), Takeuchi et al.
patent: 4940684 (1990-07-01), Okutani et al.
Chemical Abstracts, 109, 1988, 237, 26695z.
Columbus, Ohio, U.S.=JP-A-63-74-962.
Chemical Abstracts, 103, 1985, 233, 26199s.
Columbus, Ohio, U.S.=JP-A-60 33 272.
"Manufacture and Application of Highly Porous Nonoxide Ceramics", pp. 468-470, 472, Ceramic Forum International, V. Braetsch et al., 1989.

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