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Microstructure and properties of an infra-red transmitting chalcogenide glass-ceramic

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Abstract

A chalcogenide glass-ceramic (0.3 PbSe-0.7 Ge1.5 As0.5 Se3) which transmits in the infra-red region between 8 and 12 μm was produced from a phase separated parent glass. The glass transition temperature (T g) was increased from 280 to ∼ 340°C by crystallizing the phase with the lowerT g. Further heat-treatment produced a glass-ceramic that was up to 60% crystalline and contained PbSe, PbSe2 and GeSe2 crystals with a gran size of ∼ 0.5 μm. The infra-red transmission of the glass-ceramic decreased with increased crystallinity. The glass-ceramic modulus of rupture (38 MN m−2) was increased to as much as twice that of the glass and the Vickers hardness increased by 30% to ∼ 280 kg mm−2.

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Author notes

  1. J. J. Mecholsky Jun

    Present address: Naval Research Laboratory, 20375, Washington, D.C., USA

  2. G. R. Srinivasan

    Present address: International Business Machines Corporation, 12533, Hopewell Junction, N.Y., USA

Authors and Affiliations

  1. Chemical Engineering and Materials Science Department, Catholic University of America, Washington, D.C., USA

    J. J. Mecholsky Jun, C. T. Moynihan, P. B. Macedo & G. R. Srinivasan

Authors
  1. J. J. Mecholsky Jun
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  2. C. T. Moynihan
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  3. P. B. Macedo
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  4. G. R. Srinivasan
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Mecholsky Jun, J.J., Moynihan, C.T., Macedo, P.B. et al. Microstructure and properties of an infra-red transmitting chalcogenide glass-ceramic. J Mater Sci 11, 1952–1960 (1976). https://doi.org/10.1007/BF00708273

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  • DOI: https://doi.org/10.1007/BF00708273

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