Elastic properties of tantalum carbide (TaC).

Lopez de la Torre, L., Winkler, B., Schreuer, J., Knorr, K. and Avalos-Borja, M. (2005) Elastic properties of tantalum carbide (TaC). Solid State Communications, 134 (4). pp. 245-250. DOI 10.1016/j.ssc.2005.01.036.

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Abstract

Elastic properties of TaC have been investigated experimentally and by model calculations. The elastic stiffness coefficients c(11)=597(11) GPa and c(44)=153(2) GPa were determined on a (100)-oriented disc-shaped monocrystal at room temperature using a plane-wave ultrasound method. The corresponding theoretical values (c(11)=621(3), c(44)=166.8(3) GPa) agree within 4 and 8%, respectively. Therefore, we are confident that the predicted value for c(12) is equally accurate, and this allows the prediction of the Bulk and Young's moduli and the Poisson ratio. Data published earlier are critically reviewed and predictions concerning the possibility to synthesize extremely incompressible carbides are made. (c) 2005 Elsevier Ltd. All rights reserved.

Document Type: Article
Keywords: transition metal carbides mechanical properties elastic constants electronic-structure phase-stability constants 1st-principles crystals
Research affiliation: Kiel University
Refereed: No
Date Deposited: 18 Jan 2012 05:21
Last Modified: 23 Sep 2019 22:33
URI: https://oceanrep.geomar.de/id/eprint/16081

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