Alumina-or alumina/zirconia-silicon carbide whisker ceramic comp

Details Alumina-or alumina/zirconia-silicon carbide whisker ceramic comp Alumina-or alumina/zirconia-silicon carbide whisker ceramic comp

1989-07-17

1991-04-23

Bell, Mark L.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 60, 264 65, 501 89, 501105, 501 88, 428373, C04B 3334

Patent

active

050098225

ABSTRACT:
A SiC whisker-reinforced ceramic article produced by subjecting the SiC whiskers to acid- and/or base-washing; subjecting ceramic particles and SiC whiskers to fluid classification; forming a suspension of the powdered ceramic and SiC whiskers; consolidating the suspension to form a green compact; optionally infiltrating the green compact with an aluminum compound which is a precursor to Al.sub.2 O.sub.3, and pressureless sintering the green compact to produce an SiC whisker-reinforced composite having high relative density at high SiC whisker loading.

REFERENCES:
patent: 4543345 (1985-09-01), Wei
patent: 4569920 (1986-02-01), Smith-Johannsen
patent: 4605594 (1986-08-01), Owens et al.
patent: 4624808 (1986-11-01), Lange
patent: 4652413 (1987-03-01), Tiegs
patent: 4657877 (1987-04-01), Becher et al.
patent: 4769349 (1988-09-01), Hillig et al.
patent: 4789277 (1988-12-01), Rhodes et al.
patent: 4834928 (1989-05-01), Su
Ceramic Processing Committee of Ceramic Processing National Academy of Sciences, Washington DC (1968) pp. 23-29 (Materials Advisory Board).
"Efficient Use of Whiskers in the Reinforcement of Ceramics" J. Milewski (1986) pp. 36-41.
Introduction to the Principles of Ceramic Processing James Reed pp. 141-149 (1988) Wiley Publication.

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