Accession Number : AD0823638

Title :   TERNARY PHASE EQUILIBRIA IN TRANSITION METAL-BORON-CARBON-SILICON SYSTEMS. PART I. BINARY SYSTEMS. VOLUME XII. REVISION OF THE VANADIUM-CARBON AND NIOBIUM-CARBON SYSTEMS.

Descriptive Note : Documentary rept.,

Corporate Author : AEROJET-GENERAL CORP SACRAMENTO CA MATERIALS RESEARCH LAB

Personal Author(s) : Rudy, Erwin ; Windisch, Stefan ; Brukl, Charles E.

Report Date : SEP 1967

Pagination or Media Count : 50

Abstract : The binary systems vanadium-carbon and niobium-carbon were reinvestigated by means of X-ray, melting point, DTA, and metallographic techniques on chemically and thermally characterized specimens; revised phase diagrams for both binary systems are given. In addition, recent investigations have also shown that some of the intermediate phases exhibit a more complex thermal behavior than previously anticipated. Thus, for example, the thermodynamic evaluation of the equilibria in ternary metal-carbon systems pointed to the existence of sublattice order-disorder transformations in the Me2C phases. These indications have, in the meantime, been confirmed experimentally by X ray and differential-thermoanalytical means.

Descriptors :   *CARBON ALLOYS), *CHEMICAL EQUILIBRIUM), (*PHASE STUDIES, (*TRANSITION METALS, DIFFERENTIAL THERMAL ANALYSIS, VANADIUM ALLOYS, NIOBIUM ALLOYS, EUTECTICS, CARBIDES, TEMPERATURE, MELTING, COOLING, DIFFUSION, MELTING POINT, X RAY DIFFRACTION.

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE