Preceramic compositions and ceramic products

Details Preceramic compositions and ceramic products Preceramic compositions and ceramic products

1989-04-14

1990-03-20

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 88, 501 96, C04B 3558

Patent

active

049101730

ABSTRACT:
Preceramic compositions which have particular utility in providing protective ceramic coatings having low moisture sensitivity on carbon/carbon composites, graphite, carbon fibers, and other normally oxidizable materials are prepared by dispersing about 0.1-1.0 part by weight of a Group IIA metal salt with an organoborosilazane polymer solution obtained by reacting about 0.25-20 parts by weight of a trialkoxy-, triaryloxy-, or tri(arylalkoxy)boroxine with one part by weight of a polysilazane in an organic solvent and, if desired, heating the dispersion to convert it to a solution.

REFERENCES:
patent: 4097294 (1978-06-01), Rice et al.
patent: 4174331 (1979-11-01), Myles
patent: 4581468 (1986-04-01), Paciorak et al.

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