Anisotropic thermal properties of talc under high temperature and pressure

Details Anisotropic thermal properties of talc under high temperature and pressure Anisotropic thermal properties of talc under high temperature and pressure

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012pepi..190...10y&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 190, p. 10-14.

Physics

Scientific paper

The anisotropic thermal conductivity and diffusivity of talc were simultaneously measured up to 5.3 GPa and 900 K using the pulse transient method. Although significant anisotropy was observed in the thermal conductivity of talc, the average thermal conductivity is comparable to that of olivine and roughly three times greater than that of antigorite. From the ratio of the thermal conductivity to the thermal diffusivity, the heat capacity of talc was evaluated. The pressure derivative of heat capacity was found to be positive, which is related to the anomaly of thermal expansivity of talc above 50 °C at atmospheric pressure.

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