Journal of Materials Science

, Volume 17, Issue 5, pp 1465–1473 | Cite as

Mechanical strengthening and impurity precipitation behaviour for divalent cation-doped alkali halides

  • C. Zaldo
  • J. García Solé
  • F. Agulló-López


The yield stress of NaCl doped with Ca, Sr, Mn, Pb and Cd, KCl doped with Pb, and KBr doped with Sr and Pb, has been investigated as a function of the state of aggregation of the impurity. For all systems the yield-stress remains constant during isothermal annealing treatments if the impurity concentration is below a threshold value dependent on the material. At higher concentrations two opposite behaviours have been found. For systems where a coherent Suzuki phase has been detected (NaCl-Cd and NaCl-Mn) or is expected to occur (KCl-Pb, KBr-Pb and KBr-Sr) a marked softening is observed during annealing. On the other hand, a marked hardening appears for NaCl-Pb, NaCl-Ca and NaCl-Sr, where the stable dihalide phase has been shown to form. Mechanisms responsible for the reported behaviour are proposed and briefly discussed.


Polymer Precipitation Halide Annealing Treatment Impurity Concentration 
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Copyright information

© Chapman and Hall Ltd 1982

Authors and Affiliations

  • C. Zaldo
    • 1
  • J. García Solé
    • 1
  • F. Agulló-López
    • 1
  1. 1.Departmento de Optica y Estructura de la Materia and Instituto de Física del Estado Sólido (C.S.I.C.-U.A.M.)Universidad Autónoma de MadridCantoblanco, Madrid-34Spain

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