Thermodynamic approach to reaction processing of W-Ta-C composite materials
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.
M. C. Malone et al., "Thermodynamic approach to reaction processing of W-Ta-C composite materials," Proceedings of the 10th International Ceramic Engineering Conference, Goller Verlag, Jan 2007.
Materials Science and Engineering
Keywords and Phrases
Corrosion; Corrosive Gases; Extreme Temperatures; Liquid Alumina; Melting Temperatures; Supersonic Speeds
Article - Conference proceedings
© 2007 Goller Verlag, All rights reserved.
01 Jan 2007