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Neutron diffraction study of the deuterides of Zr0.9Ti0.1MnCr Laves phase alloy

✍ Scribed by Kai Sun; Xiumei Guo; Erdong Wu; Yuntao Liu; Hongli Wang

Publisher: Elsevier Science
Year: 2006
Tongue: English
Weight: 363 KB
Volume: 385-386
Category: Article
ISSN: 0921-4526
DOI: 10.1016/j.physb.2006.05.302

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✦ Synopsis

The structures of three deuterides with different D contents for C14-type Laves phase Zr 0.9 Ti 0.1 MnCr alloy are studied by neutron and X-ray diffraction. A saturated deuteride containing $3.5 D per mole of alloy is formed at 500 kPa. The structures of the deuterides are similar to that of ZrMn 2 D 3 with all D atoms in the interstices formed by two Zr/Ti and two Mn/Cr atoms. The lattice constants of a deuteride formed at desorption stage appear to be larger than that of the saturated deuteride with higher D concentration. A solid solution containing $0.1 D per mole of alloys is formed after de-hydrogenation. The remaining D atoms are in the more stable sites, which possess greater atom affinity and larger interstitial size. Strong diffuse scattering apparently due to hydrogen-induced amorphization has been observed in the diffraction patterns of the deuterides.

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