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Structure of glassy early-transition-metal-late-transition-metal hydrides

Samwer, K. and Johnson, W. L. (1983) Structure of glassy early-transition-metal-late-transition-metal hydrides. Physical Review B, 28 (6). pp. 2907-2913. ISSN 0163-1829. doi:10.1103/PhysRevB.28.2907.

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Hydrogen is used as a probe for obtaining structural information on metallic glasses. Results from experimental radial distribution functions of hydrided and unhydrided Zr3Rh and Zr2Pd glasses show a significant change in the nearest-neighbor distance of Zr atoms. The measured distance suggests that hydrogen occupies mainly tetrahedral sites defined by four Zr atoms under normal hydriding conditions (1 atm H2, ∼200°C). A statistical model for these sites based on current dense-random-packing models is in good agreement with the observed absorption capacity for hydrogen. We predict that H-H interaction should limit the upper value of hydrogen content in Zr-based glasses to 2.5 (H/metal atom).

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Additional Information:©1983 The American Physical Society. Received 7 March 1983. The authors would like to thank Dr. Art Williams and Vladimir Matijasevic for their assistance with the x-ray diffraction experiments, and Michael Atzmon, Lowell Hazelton, and Xian Li Yeh for their help with the sample preparation. This work was supported by the U. S. Department of Energy, Project Agreement No. DE-AT03-81ER10870 under Contract No. DE-AM03-76SF00767.
Issue or Number:6
Record Number:CaltechAUTHORS:SAMprb83
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2981
Deposited By: Tony Diaz
Deposited On:10 May 2006
Last Modified:08 Nov 2021 19:52

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