Abstract
The thermal conductivity and specific heat of mullite-cordierite composites have been measured in the temperature range 90 K to 420 K. The sound velocity, as determined from a fit to the specific heat data, agrees well with velocities determined from mechanical measurements. The temperature and composition dependence of the phonon mean free path is established. The thermal conductivity as a function of composition passes through a minimum for the mullite-rich compositions due to a minimum in the upper limit of the phonon mean free path. Solid solution formation is a possible cause.
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Supported by the Center for Ceramics Research, Rutgers University.
Supported by Delaware Research Partnership and E.I. Du Pont de Nemours and Co. Inc.
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© 1989 Purdue Research Foundation
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Beecher, S.C., Giedd, R.E., Onn, D.G., Anderson, R.M., Wachtman, J.B. (1989). Thermal Properties of Mullite-Cordierite Composites. In: Hasselman, D.P.H., Thomas, J.R. (eds) Thermal Conductivity 20. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0761-7_11
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DOI: https://doi.org/10.1007/978-1-4613-0761-7_11
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