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An amorphous-to-amorphous transition in Ni–Zr–B alloys as probed by hydrogen storage

Published online by Cambridge University Press:  31 January 2011

J. H. Harris  and
W. A. Curtin
J. H. Harris
Affiliation:
BP America, Warrensville Research Center, Cleveland, Ohio 44128
W. A. Curtin
Affiliation:
BP America, Warrensville Research Center, Cleveland, Ohio 44128
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Abstract

The hydrogen occupation characteristics of the ternary amorphous alloy system Ni–Zr–B are investigated using gas-phase and electrochemical hydrogen-absorption techniques. Boron concentrations of as little as 1% are observed to cause large changes in the hydrogen storage properties relative to the binary Ni–Zr. Generalizations of a site statistical model, which accurately accounted for H storage in thebinary Ni–Zr and is based on tetrahedral interstitial hydrogen sites, cannot account for the hydrogen absorption properties of the boron-containing alloys, suggesting a structural transition between two amorphous phases induced by only 1% boron. A simple model in which the new amorphous phase stores H in higher-coordinated interstitial sites is shown to be consistent with the electrochemical and gas-phase data.

Type
Articles
Information
Journal of Materials Research , Volume 3 , Issue 6 , December 1988 , pp. 1349 - 1354
Copyright
Copyright © Materials Research Society 1988

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References

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