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Powder diffraction data for the homeotypic intermetallic compounds (Co, Ni)4Al13(h) and Co2NiAl9

Published online by Cambridge University Press:  10 January 2013

K. Gotzmann,
U. Burkhardt,
M. Ellner and
Yu. Grin
K. Gotzmann
Affiliation:
Max-Planck-Institut für Metallforschung, Seestrasse 75, D-70174 Stuttgart, Germany
U. Burkhardt
Affiliation:
Max-Planck-Institut für Metallforschung, Seestrasse 75, D-70174 Stuttgart, Germany
M. Ellner
Affiliation:
Max-Planck-Institut für Metallforschung, Seestrasse 75, D-70174 Stuttgart, Germany
Yu. Grin
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
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Abstract

Two homeotypical phases occur at the mole fraction xAl≈0.75 in the ternary system Co-Ni-Al: the pseudoternary intermetallic compound (Co, Ni)4Al13(h) (space group C2/m, Pearson code mC(34-1.8)) [Notation, according to Parthé et al. (1993). TYPIX, Standardized Data and Crystal Chemical Characterization of Inorganic Structure Types (Springer, Berlin), Vol. 2, p. 269, Vol. 3, p. 1055]. For structures with partly occupied sites, the hybrid Pearson code is given as (the sum of the multiplicities of all, fully or partly occupied sites in the unit cell)−(number of structural vacancies in the unit cell)], and the ternary compound Co2NiAl9 (Immm, oI96). Powder diffraction data are reported for these materials or phases—from the viewpoint of phase equilibria—immediately neighboring phases.

Keywords

powder diffraction dataintermetallic compoundsaluminideshomeotypical structurespentagonal channels

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Type
Research Article
Information
Powder Diffraction , Volume 14 , Issue 1 , March 1999, pp. 64 - 68
Copyright
Copyright © Cambridge University Press 1999

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