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Experimental and finite element study of the thermal conductivity of alpha-SiAlON ceramics
(Wiley, 2007) Kushan, Seniz Reyhan; Uzun, İbrahim; Dogan, Battal; Mandal, Hasan
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.