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Issue 4, 2013
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Structures of NiCd6+δ (−0.32 ≤ δ ≤ 0.35) – a γ-brass related phase, and NiCd1+δ (0 ≤ δ ≤ 0.05) – a Ti2Ni type phase in the nickel–cadmium system

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Abstract

The crystal structures of the binary cadmium-rich complex metal alloys NiCd6+δ (−0.32 ≤ δ ≤ 0.35) and NiCd1+δ (0 ≤ δ ≤ 0.05) were studied by means of single crystal X-ray diffraction. The partitioning of the NiCd6+δ structure into clusters grouped around all 16 high symmetry points of the face centered cubic cell leads to the identification of two partial structures forming replicas of two disjointed, interpenetrating, zinc blende-type nets. In one partial structure the nodes are NiTi2-type Ni4Cd18 and bcc-type NiCd26 clusters. This substructure is ordered and compositionally more or less invariant in the whole homogeneity range with the fixed composition Ni5Cd44. The complementary substructure varies in composition and exhibits vacancy, substitutional and positional disorders. The structure of NiCd1+δ (0 ≤ δ ≤ 0.05) can be described by a 34-atom Ti2Ni-type cluster.

Graphical abstract: Structures of NiCd6+δ (−0.32 ≤ δ ≤ 0.35) – a γ-brass related phase, and NiCd1+δ (0 ≤ δ ≤ 0.05) – a Ti2Ni type phase in the nickel–cadmium system

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Publication details

The article was received on 19 Jun 2012, accepted on 07 Nov 2012 and first published on 29 Nov 2012


Article type: Paper
DOI: 10.1039/C2CE25982F
CrystEngComm, 2013,15, 745-753

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    Structures of NiCd6+δ (−0.32 ≤ δ ≤ 0.35) – a γ-brass related phase, and NiCd1+δ (0 ≤ δ ≤ 0.05) – a Ti2Ni type phase in the nickel–cadmium system

    P. P. Jana and S. Lidin, CrystEngComm, 2013, 15, 745
    DOI: 10.1039/C2CE25982F

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