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Ternary Phase Equilibria In Transition Metal-Boron-Carbon-Silicon Systems. Part I. Related Binary Systems. Volume V. Ta-C System. Partial Investigation In The Systems Nb-C And V-C.

Report Number: AFML TR 65-2 Part 1 Volume 5
Author(s): Rudy, E.; Harmon, D. P.
Corporate Author: Aerojet-General Corporation
Laboratory: Air Force Materials Laboratory
Date of Publication: 1965-12
Pages: 90
Contract: AF 33(615)-1249
Project: 7350
Task: 735001
AD Number: AD0478182

Abstract:
The alloy system tantalum-carbon was investigated by means of X-ray, DTA, and melting point techniques on heat-treated and chemically analyzed alloys; a complete phase diagram was established. Analogously to the findings in the Ta-C systems, a previously unknown phase reaction of the Nb2C phase was found to occur at high temperatures. The melting temperatures of the monocarbide phase and the NbC-C eutectic reaction isotherm were redetermined. The alpha- beta-Me2C-phase reaction could not be found in the vanadium-carbon system.

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