STABILITY OF TITANIUM NITRIDE AND TITANIUM CARBIDE WHEN EXPOSED TO HYDROGEN ATOMS FROM 298 TO 1950 K

Technical Report · Tue Oct 31 04:00:00 EST 1961

OSTI ID:4003372

Phillipp, W H

No appreciable reaction was observed from 298 to 1950 deg K when TiN or TiC was exposed to H atoms at 10/sup -4/ atm pressure. At the lower temperatures, thermodynamic calculations show that such reactions are favored; however, the reaction rates should be low because of the kinetics, since the reaction product Ti, which is a good catalyst for H atom recombination, does not readily volatilize. Also determined were the rates of decomposition of TiN and TiC ib vacuum and in molecular H/sub 2/ at 10/sup -3/ atm pressure. Thermodynamic computations support the experimental data on the evaporation rates in vacuum and the fact that TiN and TiC are not expected to react appreciably with molecular H/sub 2/ from 298 to 2000 deg K. (auth)

• Research Organization: National Aeronautics and Space Administration, 1961
• NSA Number: NSA-15-026546
• OSTI ID: 4003372
• Report Number(s): NASA-TN-D-1053
• Country of Publication: United States
• Language: English

Related Subjects

CATALYSIS
CHEMICAL REACTIONS
DECOMPOSITION
EVAPORATION
HYDROGEN
METALS, CERAMICS, AND OTHER MATERIALS
PRESSURE
REACTION KINETICS
TEMPERATURE
THERMODYNAMICS
TITANIUM CARBIDES
TITANIUM NITRIDES
VACUUM
VOLATILITY