STABILITY OF REFRACTORY COMPOUNDS IN HYDROGEN BETWEEN 4500 AND 5000 F, AND THEIR COMPATIBILITY WITH TUNGSTEN

Technical Report · Mon May 01 04:00:00 EDT 1961

OSTI ID:4002894

May, C E; Hoekstra, P D

Each refractory compound prepared was placed in a tungsten cup which was inductively heated in a hydrogen atmosphere to temperatures between 4500 and 5000 deg F. Changes in pressure, weight, and crystal structure were taken as indications of reaction. HfC, TaC, TiC, ZrC, HfN, TiN, ZrN, and ZrO/sub 2/ showed weight loss due to volatilization, decomposition, or reaction with hydrogen; reaction of TaN was indicated from diffraction data. Any reaction occurring for TaB/sub 2/, WB, and NbC was less than the minimum detectable amount. Most of the compounds (except the nitrides) were found to be incompatible with the tungsten container. This prevented the determination of the degree of stability of some of the materials in hydrogen. These results were compared with the earlier work at Lewis Research Center on the stability of these materials in hydrogen between 4000 and 4500 deg F. (auth)

• Research Organization: National Aeronautics and Space Administration. Lewis Research Center, Cleveland
• NSA Number: NSA-15-019773
• OSTI ID: 4002894
• Report Number(s): NASA-TN-D-844
• Country of Publication: United States
• Language: English

Related Subjects

ATMOSPHERE
CHEMICAL REACTIONS
CONFIGURATION
CRYSTALS
DECOMPOSITION
DIFFRACTION
HAFNIUM CARBIDES
HAFNIUM NITRIDES
HIGH TEMPERATURE
HYDROGEN
LATTICES
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM CARBIDES
PRESSURE
REFRACTORIES
STABILITY
TANTALUM BORIDES
TANTALUM CARBIDES
TITANIUM CARBIDES
TITANIUM NITRIDES
TUNGSTEN
TUNGSTEN BORIDES
VESSELS
VOLATILITY
WEIGHT
ZIRCONIUM CARBIDES
ZIRCONIUM NITRIDES
ZIRCONIUM OXIDES