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Synthesis of Wc-Co Nanocomposites Using Polymer as CarbonSource

Published online by Cambridge University Press:  21 February 2011

A. Manthiram  and
Y. T. Zhu
A. Manthiram
Affiliation:
Center for Materials Science and Engineering, ETC 9.104, The University of Texas at Austin, Austin, TX 78712
Y. T. Zhu
Affiliation:
Center for Materials Science and Engineering, ETC 9.104, The University of Texas at Austin, Austin, TX 78712
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Abstract

Ceramic-metal composites such as WC-Co are attractive for cutting-toolapplications as they have high hardness, chemical inertness and resistanceto heat. The properties and performance of these composites can be enhancedby keeping the size of the components on a nanometer scale. Synthesis ofWC-Co nanocomposites generally involves gas-phase carburization. We havedeveloped a novel approach in which a polymer precursor such aspolyacrylonitrile serves as an in situ source for carbon.The WC-Co nanocomposites formed are characterized by x-ray diffraction andelectron microscopy. The synthesis and processing conditions such as firingtemperature, time and atmosphere play a critical role in obtainingphase-pure products.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 463
Copyright
Copyright © Materials Research Society 1998

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References

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