Mechanical and thermodynamic properties of infrared transparent low melting chalcogenide glass

Edward Bormashenko, Roman Pogreb, Semion Sutovsky, Victor Lusternik, Alexander Voronel

Research output: Contribution to journalArticlepeer-review

Abstract

The properties of infrared (IR) transparent chalcogenide glass Se57I20As18Te3Sb2 have been studied for the first time by dynamic mechanical analysis (DMA). This glass demonstrates both high transparency in a broad IR band (1-12 μm) and a particularly low softening point (near 50 °C). It is known as one of the best adhesives intended for the binding of IR optics elements. The DMA method gives valuable information about the complex Young's modulus of the glass in its softening region. In parallel with the study of mechanical properties of the glass the character of its glass transition process has been investigated. Our results of DMA were then compared with our thermodynamic data obtained by scanning calorimetry. The peak of mechanical losses in DMA appears to be situated considerably higher than the calorimetrically determined glass transition temperature.

Original languageEnglish
Pages (from-to)397-399
Number of pages3
JournalInfrared Physics and Technology
Volume43
Issue number6
DOIs
StatePublished - Dec 2002

Keywords

  • Chalcogenide glass
  • Dynamic mechanical analysis
  • Glass transition
  • Infrared transparency band
  • Loss modulus
  • Scanning calorimeter
  • Storage modulus

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