Title

Thermodynamic approach to reaction processing of W-Ta-C composite materials

Abstract

Tantalum carbide-tungsten composites were produced by reaction sintering a mixture of tungsten carbide, tantalum pentoxide, and tantalum carbide. The reaction study was performed under both vacuum and flowing argon atmospheres at temperatures in the range of 1350 to 1800°C to determine the optimum reaction conditions. The tungsten:tantalum molar ratio was varied from 7:2 to 7:12 with carbon contents of 18-35 at %. Samples were analyzed with x-ray diffraction to determine the extent of reaction and the phases were formed. SEM analysis was also performed to characterize microstructure and phase segregation.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Corrosion; Corrosive Gases; Extreme Temperatures; Liquid Alumina; Melting Temperatures; Supersonic Speeds

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 Goller Verlag, All rights reserved.

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