Thermodynamic analysis of chemical stability of ceramic materials in hydrogen-containing atmospheres at high temperatures
- Misra, Ajay K.
- Jan 1, 1990.
- Physical Description:
- 1 electronic document
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- The chemical stability of several ceramic materials in hydrogen-containing environments was analyzed with thermodynamic considerations in mind. Equilibrium calculations were made as a function of temperature, moisture content, and total system pressure. The following ceramic materials were considered in this study: SiC, Si3N4, SiO2, Al2O3, mullite, ZrO2, Y2O3, CaO, MgO, BeO, TiB2, TiC, HfC, and ZrC. On the basis of purely thermodynamic arguments, upper temperature limits are suggested for each material for long-term use in H2-containing atmospheres.
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19900006756.
Accession ID: 90N16072.
- No Copyright.
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