Abstract
The transformation of crystalline Zr 3Rh intermetallic phases into the amorphous state by hydriding at about 200°C is shown. The reaction endproduct shown no significant difference in their physical properties to a rapidly quenched hydrided sample. The transformation can be explained in terms of a “chemical frustration” effect due to the large disparity in the diffusion rates. Radial distribution functions suggest that hydrogen occupies tetrahedral sites defined by four Zr atoms. A simple statistical model is in good agreement with the observed absorption capacity for hydrogen.
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