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The Li–C phase equilibria

  • Artem Kozlov , Martin Seyring , Martin Drüe , Markus Rettenmayr and Rainer Schmid-Fetzer
Published/Copyright: November 5, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 104 Issue 11

Abstract

Experimental work using X-ray diffraction and differential scanning calorimetry was conducted on key samples in the Li–C binary system. Reproducible differential scanning calorimetry data with multiple heating cycles were produced only by samples sealed in arc welded Ta-capsules. Only one compound, α/βLi2C2, is found to be stable. A comprehensive Calphad-type assessment was performed and for the first time a consistent thermodynamic description, covering all thermodynamic and phase equilibrium data, is developed. Phase diagrams calculated from that validated database, including the gas phase, are presented. The phase LiC6, was also studied experimentally. It is metastable with respect to α/βLi2C2 + (C), but may be formed from Li + (C). Phase transitions of LiC6, claimed in the literature, are discussed.

Keywords: Li–C; Phase equilibria; X-ray diffraction; Differential scanning calorimetry; Thermodynamic assessment
* Correspondence address, Prof. Dr.-Ing. Rainer Schmid-Fetzer, Robert-Koch-Str. 42, Institute of Metallurgy, Clausthal University of Technology, D-38678, Clausthal-Zellerfeld, Germany, Tel.: 05323-72-2150, Fax: 05323-72-3120, E-mail:

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Received: 2013-03-12
Accepted: 2013-05-31
Published Online: 2013-11-05
Published in Print: 2013-11-14

© 2013, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110960
Keywords for this article
Li–C; Phase equilibria; X-ray diffraction; Differential scanning calorimetry; Thermodynamic assessment

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Solubility of nitrogen in ferrite; the Fe–N phase diagram
  5. The Li–C phase equilibria
  6. Experimental study of phase equilibria in the “SnO”–SiO2–“FeO” system at silica saturation, and fixed oxygen partial pressures at 1473 K
  7. The evolution of Y distribution during the processing route of mechanically alloyed iron studied by means of atom probe tomography
  8. Oscillative surface morphology in peritectic NiAl using phase-field modeling
  9. Microstructural characterisation of oxide layer developed by sulphuric anodisation on 2017A alloys
  10. Wear and corrosion behaviour of AISI 310 and AISI 316 stainless steels in synthetic mine water
  11. Superplasticity of coarse-grained Ti-13V-11Cr-3Al alloy
  12. Research on the creep fracture mechanism of FGH95 Ni-based superalloy
  13. Hot pressing of Al2O3 matrix ceramic materials improved by diopside additive
  14. Tungsten heavy alloy as a filler metal for repair welding of dies for high pressure die casting
  15. A one-pot synthesis of Ag/α-Fe2O3 nanoplates with gelatin and their photocatalytic activity
  16. Short Communications
  17. Effects of coating solution concentration on the interlaminar shear strength of carbon fiber/epoxy/nano-CaCO3 composites
  18. People
  19. Dr.-Ing. Christa Blank
  20. DGM News
  21. DGM News
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