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Processing and Properties of Ceramic Nanocomposites Produced from Polymer Precursor Pyrolysis, High Pressure Sintering and Spark Plasma Sintering

Published online by Cambridge University Press:  14 March 2011

Julin Wan ,
Matt J. Gasch ,
Joshua D. Kuntz ,
Rajiv Mishra  and
Amiya K. Mukherjee
Julin Wan
Affiliation:
Department of Chemical Engineering and Materials Science, University of California Davis, CA 95616
Matt J. Gasch
Affiliation:
Department of Chemical Engineering and Materials Science, University of California Davis, CA 95616
Joshua D. Kuntz
Affiliation:
Department of Chemical Engineering and Materials Science, University of California Davis, CA 95616
Rajiv Mishra
Affiliation:
Department of Metallurgical Engineering, University of Missouri, Rolla, MO 65401
Amiya K. Mukherjee
Affiliation:
Department of Chemical Engineering and Materials Science, University of California Davis, CA 95616
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Abstract

Silicon nitride/silicon carbide nanocomposites and alumina-based nanocomposites were investigated in an effort to produce materials with high structural integrity and service properties. Bulk nano-nano composites of silicon nitride and silicon carbide were processed by crystallization of amorphous Si-C-N ceramics that were consolidated in-situ during pyrolysis of a polymer precursor. This material was developed for the purpose of examining the creep behavior of covalent ceramics when there is no oxide glassy phase at grain boundaries. Si3N4/SiC micro-nano composites were sintered by spark plasma sintering (SPS), aiming at better microstructural control and improved creep resistance. Composites of alumina with diamond, silicon carbide and metal (Nb) were developed by high pressure sintering and SPS. These composites maintain microstructures with a nanometric alumina matrix and are targeted for studying the toughening mechanisms and superplastic deformation mechanisms.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 634: Symposium B – Structure and Mechanical Properties of Nanophase Materials-Theory & Computer Simulations vs. Experiment , 2000 , B7.2.1
Copyright
Copyright © Materials Research Society 2001

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References

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