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Hydrogen interactions with metalsReview of the literature on the nature and extent of hydrogen interactions with metals and the role of hydrogen in metal failure. The classification of hydrogen-containing systems is discussed, including such categories as covalent hydrides, volatile hydrides, polymeric hydrides, and transition metal hydride complexes. The use of electronegativity as a correlating parameter in determining hydride type is evaluated. A detailed study is made of the thermodynamics of metal-hydrogen systems, touching upon such aspects as hydrogen solubility, the positions occupied by hydrogen atoms within the solvent metal lattice, the derivation of thermodynamic functions of solid solutions from solubility data, and the construction of statistical models for hydrogen-metal solutions. A number of theories of hydrogen-metal bonding are reviewed, including the rigid-band model, the screened-proton model, and an approach employing the augmented plane wave method to solve the one-electron energy band problem. Finally, the mechanism of hydrogen embrittlement is investigated on the basis of literature data concerning stress effects and the kinetics of hydrogen transport to critical sites.
Document ID
19750035534
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mclellan, R. B.
Harkins, C. G.
(Rice University Houston, Tex., United States)
Date Acquired
August 8, 2013
Publication Date
March 1, 1975
Publication Information
Publication: Materials Science and Engineering
Volume: 18
Subject Category
Metallic Materials
Accession Number
75A19606
Funding Number(s)
CONTRACT_GRANT: NGR-44-006-001
Distribution Limits
Public
Copyright
Other

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