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Record 1 of 990
Hydrogen interactions with metals
External Online Source: doi:10.1016/0025-5416(75)90069-5
Author and Affiliation:
Mclellan, R. B.
Harkins, C. G.(Rice University, Houston, Tex., United States)
Abstract: Review 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.
Publication Date: Mar 01, 1975
Document ID:
19750035534
(Acquired Dec 01, 1995)
Accession Number: 75A19606
Subject Category: METALLIC MATERIALS
Document Type: Journal Article
Publication Information: Materials Science and Engineering; 18; Mar. 197
Publisher Information: Switzerland
Contract/Grant/Task Num: NGR-44-006-001
Financial Sponsor: NASA; United States
Description: 31p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: GAS-METAL INTERACTIONS; HYDROGEN EMBRITTLEMENT; METAL HYDRIDES; METAL-GAS SYSTEMS; BAND STRUCTURE OF SOLIDS; CHEMISORPTION; CRYSTAL LATTICES; GASEOUS DIFFUSION; HYDROGEN BONDS; METAL FATIGUE; SOLID SOLUTIONS; TECHNOLOGY ASSESSMENT; THERMODYNAMIC PROPERTIES
Imprint And Other Notes: Materials Science and Engineering, vol. 18, Mar. 1975, p. 5-35. Army-supported research;
Miscellaneous Notes: p. 5-35. Army-supported research
Availability Source: Other Sources
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