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The reaction of a titanium alloy with hydrogen gas at low temperatures.An investigation of the effect of temperature on the surface hydriding reaction of Ti-5Al-2.5Sn alloy exposed to hydrogen at 250 psig was made. The temperature range studied extended from 160 to -160 F. Reaction conditions were controlled so as to expose a vacuum-cleaned, oxide-free alloy surface to an ultra-pure hydrogen atmosphere. Reaction times up to 1458 hr were studied. The hydriding reaction was extremely sensitive to experimental variables and the reproducibility of reaction behavior was poor. However, it was demonstrated that the reaction proceeded quite rapidly at 160 F; as much as 1 mil surface hydriding was observed after exposure for 162 hr. The amount of hydriding was observed to decrease with decreasing temperature at 75, 36, and -76 F. No surface hydriding was detected either by vacuum fusion analysis or by metallographic examination after exposure for 1458 hr at -110 or -160 F.
Document ID
19730047191
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Williams, D. N.
Wood, R. A.
(Battele Columbus Laboratories Columbus, Ohio, United States)
Date Acquired
August 7, 2013
Publication Date
May 1, 1973
Publication Information
Publication: Journal of the Less-Common Metals
Volume: 31
Subject Category
Materials, Metallic
Accession Number
73A31993
Funding Number(s)
CONTRACT_GRANT: NAS9-12044
Distribution Limits
Public
Copyright
Other

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