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    • Keywords


      Hardness; rubidium halide mixed crystals; doped rubidium halide crystals.

    • Abstract


      Efforts are made to improve the hardness of rubidium halide crystals by

      1. solid solution hardening and

      2. impurity hardening.

      Systematic microhardness measurements have been made on rubidium halide mixed crystals (RbBr–RbI and KI–RbI) and rubidium halide crystals doped with Sr2+ ions. The composition dependence of the hardness of mixed crystals follows the law $\Delta H_V$ = $K\ x$ (1–𝑥), where $\Delta H_V$ is the enhancement in hardness, 𝐾 a constant and 𝑥 and (1 – 𝑥) the concentrations of the first and second component of the mixed crystals, respectively. The hardness of doped crystals increases with the concentration 𝐶 of the dopant according to the law, $\Delta H_V$ = $k\ C^m$, where 𝑘 and 𝑚 are constants. The relative efficacy of the two methods of hardening is discussed.

    • Author Affiliations


      D B Sirdeshmukh1 T Kumara Swamy1 P Geeta Krishna1 K G Subhadra1

      1. Physics Department, Kakatiya University, Warangal 506 009, India
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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