• English
  • Deutsch
  • Log In
    Password Login
    Research Outputs
    Fundings & Projects
    Researchers
    Institutes
    Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Artikel
  4. Phase formation in porous liquid phase sintered silicon carbide: Part II: Interaction between Y2O3 and SiC
 
  • Details
  • Full
Options
2005
Journal Article
Title

Phase formation in porous liquid phase sintered silicon carbide: Part II: Interaction between Y2O3 and SiC

Abstract
During the sintering of porous liquid phase sintered silicon carbide (porous LPS-SiC) a strong interaction with the atmosphere takes place, influencing the composition and stability of porous LPS-SiC components. The present paper is focused on the interaction of Y2 O3 with SiC, which is part of the common used sintering additives for LPS-SiC (Y2O3-Al2 O3-SiC). The interaction of Al2O3 and SiC has been studied in a previous paper [J. Eur. Ceram. Soc. (in press)]. The reaction products of the interaction of Y2O3 with SiC and the resulting microstructures were analysed using model experiments. The effects of the influence of different sintering atmospheres, namely Argon and Ar/CO, as well as vacuum and different temperatures have been investigated. The phase formation was determined by X-ray diffraction (XRD) and can be explained on the basis of thermodynamic calculations. Depending on the sintering conditions, silicides or yttrium carbides can be formed in addition to stable oxides, which can result in the decomposition of the samples after sintering. Reactions between SiC and Y2O3 during sintering can be suppressed successfully if an Ar/CO atmosphere is used.
Author(s)
Ihle, J.
Herrmann, M.
Adler, J.
Journal
Journal of the European Ceramic Society  
DOI
10.1016/j.jeurceramsoc.2004.04.016
Language
English
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Keyword(s)
  • additive

  • Al2O3

  • liquid phase sintering

  • phase development

  • SiC

  • phase formation

  • reaction product

  • microstructure

  • sintering atmosphere

  • argon

  • Ar/CO

  • vacuum

  • x-ray diffraction

  • thermodynamic calculation

  • silicide

  • yttrium carbide

  • stable oxide

  • decomposition

  • Al2O3

  • SiC

  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Contact
© 2024