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    • Morphological and solidification studies of the naphthalene-thymol eutectic

      P S Bassi G P Sachdev

      Physical and Theoretical Volume 101 Issue 6 December 1989 pp 539-546

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/101/06/0539-0546

    • Keywords

       

      Heterogeneous nucleation; crystal growth; eutectic solidification; eutectic morphology; growth rate anisotropy

    • Abstract

       

      The mechanism of eutectic solidification of the naphthalene-thymol system has been investigated by spontaneous crystallization, linear velocity of crystallization and microscopic studies. The kinetic data for all the compositions of the system suggests that the growth is governed by a screw dislocation mechanism. The diffusion process has been found to be a dominant factor in explaining the decrease in the velocity of crystallization when one component is added to the other and also explains the higher growth rate for the eutectic mixture. Both the kinetic and microscopic studies confirm the interdependent nature of the growth of the two phases of the eutectic. The two phases grow simultaneously side by side and are controlled by the cross-diffusion ahead of the solid-liquid interface.

    • Author Affiliations

       

      P S Bassi1 G P Sachdev2

      1. Department of Chemistry, Guru Nanak Dev University, Amritsar - 143 005, India
      2. Department of Chemistry, Government G M Science College, Jammu - 180 001, India

    • Dates

       
      Published
      December 1989
      Manuscript received
      11 May 1989
      Manuscript revised
      28 September 1989

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