THERMODYNAMIC PROPERTIES OF TERNARY REFRACTORY CARBIDES. 1. ZIRCONIUM-NIOBIUM-CARBON.
Abstract
The non-stoichiometry of zirconium-niobium-carbide with the sodium-chloride type structure, Zr(x)Nb(1-x)C(y), was studied by measuring the activities of the components as a function of composition. The samples were prepared by heating the required amounts of oxides and graphite in a high-vacuum induction furnace. Lattice parameters were measured of all specimens. At constant carbon concentration (y = constant), the lattice parameter deviates from Vegard's law at the niobium-rich end. The metal-metal interaction energy is not much different from that in the bcc metallic zirconium-niobium system. The difference between the zirconium-carbon and niobium-carbon interaction energies (E(13)-E(23)) is linearly dependent on composition. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1969
- Accession Number
- AD0700765
Entities
People
- C. K. Jun
- M. Hoch
Organizations
- University of Cincinnati