Published September 15, 1983
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Journal Article
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Structure of glassy early-transition-metal-late-transition-metal hydrides
- Creators
- Samwer, K.
- Johnson, W. L.
Abstract
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).
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.Files
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