Applied Physics A

, Volume 97, Issue 3, pp 713–720

Crystallization behavior of 80GeS2 ⋅ 20Ga2S3 chalcogenide glass

  • Changgui Lin
  • Laurent Calvez
  • Mathieu Rozé
  • Haizheng Tao
  • Xianghua Zhang
  • Xiujian Zhao
Article

DOI: 10.1007/s00339-009-5304-1

Cite this article as:
Lin, C., Calvez, L., Rozé, M. et al. Appl. Phys. A (2009) 97: 713. doi:10.1007/s00339-009-5304-1

Abstract

Glass-ceramics were fabricated from the 80GeS2⋅20Ga2S3 chalcogenide glass using an appropriate heat-treatment at a fairly low temperature (Tg+30°C) for different durations. Compared with the base glass, they present much-improved thermal shock resistance and fracture toughness, and meanwhile remain an excellent mid-IR transmission in 2–10-μm spectral region. XRD results indicate that the enhanced mechanical properties are mainly due to the appearance of Ga2S3 crystals, and only a very small amount of GeS2 was precipitated on the surface. Bulk and powder samples heat-treated at 458°C for different durations were used to study the evolution of the two crystallization peaks using DSC measurement. It is found that the precipitation of Ga2S3 phase is responsible for the exotherm of first crystallization peak and that of GeS2 phase for the second one. The crystallization mechanism was also examined using the nonisothermal method, and the considerably low activation energy (Ec) and high crystallization rate constant (K) for the first crystallization peak illustrate a much easier precipitation of Ga2S3 phase than that of GeS2 phase, which is in good accordance with the ceramization process.

PACS

61.43.Dq 62.20.Mk 62.20.Qp 64.70.Pf 65.60.+a 

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Changgui Lin
    • 1
    • 2
  • Laurent Calvez
    • 2
  • Mathieu Rozé
    • 2
  • Haizheng Tao
    • 1
  • Xianghua Zhang
    • 2
  • Xiujian Zhao
    • 1
  1. 1.Key Laboratory of Silicate Materials Science and EngineeringWuhan University of Technology, Ministry of EducationWuhanPeople’s Republic of China
  2. 2.Laboratoire des Verres et Céramiques, UMR-CNRS 6226, Sciences chimiques de RennesUniversité de Rennes 1Rennes CedexFrance

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