Calculation of Multicomponent Refractory Composite Phase Diagrams
Abstract
Candidate materials are being studied which can be used at temperatures as high as 5000 deg F. In order to attain this goal a series of refractory compounds are being considered which can be used as composites. These composites are based on combinations between Carbon (C), Zirconium (Zr), Boron (B), and Silicon (Si) or C, Hafnium (Hf), B and Si. In order to investigate where melting can be expected in the candidate composite systems, coupled phase diagram/thermochemical descriptions of the Hf-B, Hf-C, Zr-B and Zr-C binary systems have been developed and combined with previously derived description of the B-C, Zr-Si-C binary systems in order to calculate the temperatures at which melting occurs in the composition ranges between C-ZrC-ZrB2-B4C, C-HfC-HfB2-B4C, HfC-SiC, ZrB2-SiC and HfB2-Sic.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1986
- Accession Number
- ADA192293
Entities
People
- L. Kaufman