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On the kinetics of the phase transformation of CsCl crystals II

О кинематике фазового перехода кристаллов CsCl II

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Acta Physica Academiae Scientiarum Hungaricae

Abstract

The kinetic curve of theB 2⇌B 1 phase transformation observed during uniform heating may be divided into three different stages. In the first stage disk-like nuclei are formed which grow rapidly along theB 2 phase boundaries. In the second stage no nuclei are formed and the growth takes place normal to the original grain boundaries. Finally, the decrease of the transformation rate in stage III may probably be associated with the Clausius-Clapeyron type decrease of the driving force. In the framework of this visualization of the kinetic curve some previous results are also interpretable.

Резюме

Кинетическая кривая фазового переходаB 2⇌B 1, наблюдаемого при равномерном нагреве, может быть разделена на три разные фазы. В первой фазе формируются дискообразные ядра, которые быстро растут в направления фазовых граничных линий B2. Во второй фазе ядра не образуются и рост протекает в направления, перпендикулярные к контурам первоначальных зерен. Наконец, уменьшение скорости перехода в третьей фазе вероятно можно связать с уменьшением возбуждающей силы типа Клаузиуса-Клапейрона. В рамках данного представления кинетической кривой имеется возможность для объяснения некоторых ранних результатов.

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Authors and Affiliations

  1. Research Institute for Technical Physics of the Hungarian Academy of Sciences, Budapest

    I. Gaál

  2. Research Laboratory for Chemical Structures of the Hungarian Academy of Sciences, Budapest

    Z. Morlin

  3. Research Group for Crystal Physics of the Hungarian Academy of Sciences, Budapest

    I. Tarján

Authors
  1. I. Gaál
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  2. Z. Morlin
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  3. I. Tarján
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Dedicated to Prof.P. Gombás on his 60th birthday.

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Gaál, I., Morlin, Z. & Tarján, I. On the kinetics of the phase transformation of CsCl crystals II. Acta Physica 27, 25–33 (1969). https://doi.org/10.1007/BF03156733

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  • DOI: https://doi.org/10.1007/BF03156733

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