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Incongruent reduction of tungsten carbide by a zirconium-copper melt

Published online by Cambridge University Press:  31 January 2011

Zbigniew Grzesik ,
Matthew B. Dickerson  and
Ken H. Sandhage
Zbigniew Grzesik
Affiliation:
Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210
Matthew B. Dickerson
Affiliation:
Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210
Ken H. Sandhage*
Affiliation:
Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210
*
b) Address all correspondence to this author. Present address: School of Materials Science and Engineering, Georgia Institute of Technology, 711 Ferst Drive, Atlanta, GA 30332-0245. e-mail: [email protected]
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Abstract

The reduction of tungsten carbide (WC) to elemental tungsten by reaction with a Zr–Cu melt was examined. Dense WC disks were immersed in a vertical orientation in molten Zr2Cu at 1150–1400 °C for 1.5–24 h. Continuous, adherent layers of W and ZrC formed at WC/melt interfaces. The rates of thickening of the W and ZrC product layers were examined as a function of reaction time and temperature and position along the vertical WC surface. Such kinetic data, along with microstructural analyses, indicate that the incongruent reduction of tungsten carbide is likely to be controlled by carbon diffusion through one or both of the product layers.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 9 , September 2003 , pp. 2135 - 2140
Copyright
Copyright © Materials Research Society 2003

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