An investigation of the effect of surface impurities on the adsorption kinetics of hydrogen chemisorbed onto iron. Annual status report, 1 January-31 December 1993
The goal of this program was to develop an understanding of heterogeneous kinetic processes for those molecular species which produce gaseous hydrogen degradation of the mechanical properties of metallic structural materials. Although hydrogen degradation of metallic materials is believed to result from dissolved protonic hydrogen, the heterogeneous hydrogen interface transport processes often dominate the kinetics of degradation. The initial step in the interface transport process is the dissociative chemisorption of the molecular species at the metal surface followed by hydrogen absorption into and transport through the bulk. The interaction of hydrogen with the surfaces of alpha-2(Ti3Al) titanium aluminide, gamma(TiAl) titanium aluminide, and beryllium were studied.
- Research Organization:
- California Univ., Santa Barbara, CA (United States)
- OSTI ID:
- 7198720
- Report Number(s):
- N-94-26643; NASA-CR-195213; NAS-1.26:195213; CNN: NCC2-63
- Country of Publication:
- United States
- Language:
- English
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An investigation of the effect of surface impurities on the adsorption kinetics of hydrogen chemisorbed onto iron. Annual status report, 1 January-31 December 1994
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Related Subjects
ALUMINIUM ALLOYS
CHEMISORPTION
BERYLLIUM
HYDROGEN
DISSOCIATION
IRON
HYDROGEN EMBRITTLEMENT
TITANIUM ALLOYS
HETEROGENEOUS EFFECTS
PROGRESS REPORT
REACTION KINETICS
ALKALINE EARTH METALS
ALLOYS
CHEMICAL REACTIONS
DOCUMENT TYPES
ELEMENTS
EMBRITTLEMENT
KINETICS
METALS
NONMETALS
SEPARATION PROCESSES
SORPTION
TRANSITION ELEMENTS
360105* - Metals & Alloys- Corrosion & Erosion