Accession Number : AD0482359

Title :   TERNARY PHASE EQUILIBRIA IN TRANSITION METAL-BORON-CARBON-SILICON SYSTEMS. PART II. TERNARY SYSTEMS. VOLUME V. TI-HF-B SYSTEM.

Descriptive Note : Documentary rept.,

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

Personal Author(s) : Chang, Y. A.

Report Date : MAR 1966

Pagination or Media Count : 51

Abstract : A complete phase diagram for the ternary alloy system titanium-hafnium-boron from 1000 C through the melting ranges of the diborides was established on the basis of X-ray, melting point and metallographic studies. The outstanding features of the system are that both the metal diborides and monoborides form continuous solid solutions with respect to metal exchange. From the distribution of the tie-lines in the metal monoboride two-phase field, the Gibbs free energy difference between the titanium monoboride and hafnium monoboride was derived. (Author)

Descriptors :   *BORON ALLOYS), *BORON ALLOYS), *BORON ALLOYS), (*TITANIUM ALLOYS, (*HAFNIUM ALLOYS, (*PHASE STUDIES, INTERMETALLIC COMPOUNDS, BORIDES, HAFNIUM COMPOUNDS, TITANIUM COMPOUNDS, SOLID SOLUTIONS, TRANSITION TEMPERATURE, CRYSTAL STRUCTURE, CRYSTAL LATTICES, X RAY DIFFRACTION, MELTING, DIFFERENTIAL THERMAL ANALYSIS, MICROSTRUCTURE, THERMODYNAMICS.

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE