Journal of Phase Equilibria

, Volume 19, Issue 6, pp 572–576 | Cite as

Stable and metastable phase equilibria of the In-Se system

  • T. Gödecke
  • T. Haalboom
  • F. Sommer
Section I: Basic and Applied Research


The In-Se phase diagram was redetermined using DTA, x-ray analysis, optical microscopy, TEM, and scanning electron microscopy. In9Se11 and In5Se7 are stable phases at stoichiometric composition and βIn2Se3 was observed at 59.6 at % Se. ΒIn2Se3 decomposes at 198 °C into γIn2Se3 and In5Se7. Alloy melts between 33 and 54 at.% Se exhibit a strong tendency for undercooling. Between 50 and 60 at. % Se, the InSe, In6Se7, or In2Se3 phases solidify directly from the undercooled melt, and the formation of In5Se7 and In9Se11 is suppressed while applying cooling rates between 2 to 10 K/min. The respective undercooled states and metastable phase equilibria are provided.


Phase Equilibrium Liquid Alloy In2Se3 Monotectic Reaction Assess Phase Diagram 
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Copyright information

© ASM International 1998

Authors and Affiliations

  • T. Gödecke
    • 1
  • T. Haalboom
    • 1
  • F. Sommer
    • 1
  1. 1.Max-Planck-Institut für MetallforschungStuttgartGermany

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