Journal of Materials Science

, Volume 16, Issue 4, pp 973–982 | Cite as

The role of amorphous phase separation in crystal nucleation in splat cooled Li2O-SiO2 glasses

  • E. D. Zanotto
  • A. F. Craievich
Papers

Abstract

Amorphous phase separation and its influence on crystal nucleation in Li2O-SiO2 splat cooled glasses was studied. By means of small-angle X-ray scattering and optical reflection microscopy associated with stereological analysis it was shown that the crystal nucleation rate is increased during the early stages of primary and secondary phase separation. These observations emphasize the important role played by the diffusion zone around the amorphous droplets acting as nucleation sites. Some suggestions are advanced to explain why some authors found that the amorphous separation does not influence the crystal nucleation.

Keywords

Polymer Microscopy Reflection Phase Separation Nucleation Site 

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Copyright information

© Chapman and Hall Ltd 1981

Authors and Affiliations

  • E. D. Zanotto
    • 1
  • A. F. Craievich
    • 2
  1. 1.Departamento de Engenharia de MateriaisUniversidade Federal de São CarlosSão Carlos, São PauloBrazil
  2. 2.Departamento de Física e Ciência dos Materiais, Instituto de Física e Química de São CarlosUniversidade de São PauloSão Carlos, São PauloBrazil

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