Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Patent
1988-06-27
1994-12-27
Lusignan, Michael
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
156 89, 264113, 264125, 4273977, 428698, 428902, 501 88, 501 95, 501 97, C04B 3552, C04B 3556
Patent
active
053765982
ABSTRACT:
Tough ceramic products can be prepared without exotic pressure fabricating techniques by use of a matrix laminate comprising a continuous fiber ceramic reinforcement in tow or woven form for strength, stiffness, and toughness and a ceramic matrix generally comprising (a) a filler, such as mullite; (b) ceramic reinforcing whiskers, such as silicon nitride or silicon carbide, for fine-scale interlaminar shear resistance (c) a binder, such as colloidal silica; and (d) an activator, such as a trona-like material including sodium and carbonate. The matrix is brushed into the fiber reinforcement, which is then laid up, dried, and cured. Tandem ceramic composites can be fabricated.
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Levitt, S. R., High-strength graphite fibre/lithium aluminosilicate composites, 8 J of Materials Sci. 793-806 (1973).
Rice, R. W., et al., Refractory-Ceramic-Fiber Composite: Progress, Needs, and Opportunities, Ceramic Proc., Sep.-Oct. 1982, 698-703.
Bacon, J. F. et al, Glass Matrix Composites II-Alumina Reinforced Glass, United Technologies Research Center.
Preedy Kristina S.
Simpson Frederick H.
Hammar John C.
Lusignan Michael
The Boeing Company
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