Ceramic materials with increased crystallinity from silazane pol

Details Ceramic materials with increased crystallinity from silazane pol Ceramic materials with increased crystallinity from silazane pol

1986-05-23

1988-07-12

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 92, 501 97, C04B 3556, C04B 3558

Patent

active

047570350

ABSTRACT:
A method of preparing ceramic materials with increased levels of crystalline SiC and/or Si.sub.3 N.sub.4 is described. The method consists of firing a mixture of a R.sub.3 SiNH-containing silazane polymer and an inorganic compound selected from the group consisting of iron compounds, cobalt compounds, nickel compounds, and copper compounds to an elevated temperature of at least 750.degree. C. under an inert atmosphere or in a vacuum until a ceramic material with increased levels of crystalline SiC and/or Si.sub.3 N.sub.4 is obtained.

REFERENCES:
patent: 4312970 (1982-01-01), Gaul
patent: 4340619 (1982-07-01), Gaul

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