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Ceraset (TM) and Blackglas (TM) mini-tow composites with carbon-coated Nicalon (TM) tows

Gonczy, S. T. and Faber, K. T. (1999) Ceraset (TM) and Blackglas (TM) mini-tow composites with carbon-coated Nicalon (TM) tows. In: Advances in ceramic-matrix composites IV. Ceramic Transactions. No.96. American Ceramic Society , Westerville, OH, pp. 149-160. ISBN 1574980599.

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Two commercially available preceramic polymers are the polyureasilazane Ceraset(TM) resin from DuPont Lanxide Composites and the polysiloxane Blackglas(TM) resin from AlliedSignal Inc. The Ceraset(TM) polymer pyrolyzes to a silicon carbonitride under nitrogen and a silicon carbide under argon. The Blackglas(TM) polymer produces a silicon oxycarbide under nitrogen or argon pyrolysis. Two groups of ceramic composites were made with the two preceramic polymer systems and single rows of carbon-coated ceramic grade Nicalon(TM) fiber, using 6 infiltration seeps and 1000°C argon pyrolysis. The mean tensile break loads for the two composite sets were equivalent -75 Newtons with coefficients of variation of 10-20% and obvious fiber pull-out. The break loads were independent of the matrix weight fraction, showing that the fibers are the dominant source of strength. There was no apparent difference in short term oxidation protection between the two types of matrix compositions, given the rapid oxidation of the pyrolytic carbon on the Nicalon(TM) fibers. Oxidation at 1000°C in air for one hour embrittled both sets of ceramic composites, reducing the mean break loads to 27 Newtons.

Item Type:Book Section
Faber, K. T.0000-0001-6585-2536
Additional Information:© 1999 The American Ceramic Society. The authors would like to thank Mr. Doug Freitag and Mr. Roger Matsumoto of DuPont Lanxide Composites and Dr. Jack Sikonia of AlliedSignal for the contribution of Ceraset and Blackglas resins.
Series Name:Ceramic Transactions
Issue or Number:96
Record Number:CaltechAUTHORS:20140908-181325031
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49407
Deposited By: George Porter
Deposited On:12 Sep 2014 21:46
Last Modified:03 Mar 2020 13:01

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