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Summary of constitutional data on the Aluminum-Carbon-Titanium system

  • Section I: Basic and Applied Reasearch
  • Published:
Journal of Phase Equilibria

Abstract

The constitution of the titanium-aluminum-carbon ternary system has been investigated combining critical evaluation of literature data with new experimental results. Three ternary phases occur in this system: Ti3AlC, Ti2AlC, and newly discovered Ti3AlC2. As analyzed by wet chemistry methods, all three phases are carbon deficient with respect to their “ideal≓ stoichiometry, which is based on the crystal structure formula. Ti2AlC and Ti3AlC melt incongruently at 1625 ± 10 ‡ and 1580 ± 10 ‡, respectively. Ti3AlC2 decomposes in the solid state. The two isothermal sections at 1000 and 1300 ‡ investigated experimentally are corroborated by thermochemical calculations. A projection of the liquidus surface is given, and a reaction scheme linking this liquidus projection with the isothermal sections observed is proposed.

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  1. Institut für Physikalische Chemie, UniversitÄt Wien, Vienna, Austria

    M. A. Pietzka & J. C. Schuster

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  1. M. A. Pietzka
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Pietzka, M.A., Schuster, J.C. Summary of constitutional data on the Aluminum-Carbon-Titanium system. JPE 15, 392–400 (1994). https://doi.org/10.1007/BF02647559

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