TERNARY PHASE EQUILIBRIA IN TRANSITION METAL-BORON-CARBON-SILICON SYSTEMS. PART 2. TERNARY SYSTEMS. VOL. 1. TA-HF-C SYSTEM
Abstract
The ternary alloy system tantalum-hafnium-carbon was investigated by means of X-ray, DTA, melting point, and metallographic techniques on chemically analyzed alloys, and a complete phase diagram for temperature above 1000 deg C was established. The system is characterized by a very high melting solid solution of the refractory monocarbides in both binary systems, and a limited exchange of hafnium in the low- and high-temperature modification of Ta2C. Four Class II four-phase reaction planes as well as three limiting tie lines occur in the concentration area metal-monocarbide solution. The results of this investigation are discussed and compared with previous, partial investigations of this system. Fields of application are outlined.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1965
- Accession Number
- AD0470827
Entities
People
- E. Rudy
Organizations
- Aerojet Rocketdyne Holdings