Experimental and finite element study of the thermal conductivity of alpha-SiAlON ceramics


Kushan S. R. , Uzun I., DOĞAN B. , Mandal H.

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, vol.90, no.12, pp.3902-3907, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 90 Issue: 12
  • Publication Date: 2007
  • Doi Number: 10.1111/j.1551-2916.2007.01993.x
  • Title of Journal : JOURNAL OF THE AMERICAN CERAMIC SOCIETY
  • Page Numbers: pp.3902-3907

Abstract

The thermal conductivity of monolithic Y-Sm/alpha-SiAlON was evaluated using experimental data and finite element analysis. The thermal diffusivities of Y, Y-Dy, and Y-Ce/alpha-SiAlON ceramics were also investigated experimentally for comparison. The maximum achievable thermal conductivity of Y-Sm/alpha-SiAlON has been calculated by the linear extrapolation of the temperature-based experimental inverse diffusivity data and was used for the numerical calculations. Two-dimensional model microstructures were built on the base of real microstructure images and applied for calculations. Experimental data and numerical calculations were compared for Y-Sm/alpha-SiAlON, and it was revealed that both results are in good agreement.