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1 results

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

  • K. Gotzmann, U. Burkhardt, M. Ellner, Yu. Grin
  • Journal:
    Powder Diffraction / Volume 14 / Issue 1 / March 1999
    Published online by Cambridge University Press:
    10 January 2013, pp. 64-68

  • 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.