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Nanocrystallization of Co33Zr67 Glasses

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Abstract

Crystallization of Co33Zr67 glasses was studied at temperatures below and above the glass transition temperature, Tg, by means of TEM and differential scanning calorimetry (DSC). Nanocrystalline cubic structure (“big” cubes; a = 1.22 nm) was revealed at temperatures above Tg as well as at low annealing temperatures in DSC. Systematic analysis of the overall transformation kinetics of the amorphous-to-nanocrystalline reaction leads to the conclusion that primary crystallization with time-dependent growth rates instead of polymorphic transformation, takes place. We propose that the formation of this nanostructure is provoked by oxygen contamination in the glass.

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Authors and Affiliations

  1. Department of Chemistry, University of Sofia, 1126, Sofia, Bulgaria

    T SPASSOV

  2. Department of Chemical Engineering, University of Dortmund, D-44221, Dortmund, Germany

    U KOSTER

Authors
  1. T SPASSOV
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  2. U KOSTER
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  3. J MEINHARDT
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SPASSOV, T., KOSTER, U. & MEINHARDT, J. Nanocrystallization of Co33Zr67 Glasses. Journal of Materials Science 32, 1483–1486 (1997). https://doi.org/10.1023/A:1018510118805

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  • DOI: https://doi.org/10.1023/A:1018510118805

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