Silicon nitride powder and silicon nitride-containing aqueous sl

Details Silicon nitride powder and silicon nitride-containing aqueous sl Silicon nitride powder and silicon nitride-containing aqueous sl

1994-11-29

1995-12-26

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

423344, C04B 35584

Patent

active

054787840

ABSTRACT:
Disclosed is a powder of silicon nitride particles having a specific surface area of from 5 to 20 m.sup.2 /g. When an aqueous solution of a polyvinyl alcohol having a mean degree of polymerization of X and a degree of saponification of Y (mol %) is adsorbed to the powder, the amount of saturated adsorption at 20.degree. C. is not higher than the amount of adsorption to be represented by:

REFERENCES:
patent: 5030434 (1991-07-01), Pitzer et al.
patent: 5258169 (1993-11-01), Wannagat et al.
patent: 5273942 (1993-12-01), McCauley et al.
patent: 5348919 (1994-09-01), Kuwabara et al.
patent: 5378666 (1995-01-01), Bachelard et al.
patent: 5382554 (1995-01-01), Kuwabara et al.

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