Anisotropic thermal properties of talc under high temperature and pressure

Akira Yoneda; Mitsuhide Yonehara; Masahiro Osako

doi:10.1016/j.pepi.2011.10.003

Anisotropic thermal properties of talc under high temperature and pressure

Akira Yoneda, Mitsuhide Yonehara, Masahiro Osako

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	10-14
Number of pages	5
Journal	Physics of the Earth and Planetary Interiors
Volume	190-191
DOIs	https://doi.org/10.1016/j.pepi.2011.10.003
Publication status	Published - Jan 2012

Keywords

Antigorite
Heat capacity
Hydrous mineral
Phyllosilicate
Talc
Thermal conductivity
Thermal diffusivity

ASJC Scopus subject areas

Astronomy and Astrophysics
Geophysics
Physics and Astronomy (miscellaneous)
Space and Planetary Science

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10.1016/j.pepi.2011.10.003

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title = "Anisotropic thermal properties of talc under high temperature and pressure",

abstract = "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.",

keywords = "Antigorite, Heat capacity, Hydrous mineral, Phyllosilicate, Talc, Thermal conductivity, Thermal diffusivity",

author = "Akira Yoneda and Mitsuhide Yonehara and Masahiro Osako",

note = "Funding Information: This work was supported by a Grants in Aid for Scientific Research (Nos. 19204044 and 21540444 ) from the Ministry of Education, Culture, Sports, Science and Technology , and was carried out by joint research at the Institute for Study of the Earth{\textquoteright}s Interior, Okayama University. The authors thank S. Maruyama, N. Tomioka and T. Tsujimori for characterizing the present sample, and T. Maeda and C. Oka for assistance with the high-pressure experiment.",

year = "2012",

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doi = "10.1016/j.pepi.2011.10.003",

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journal = "Physics of the Earth and Planetary Interiors",

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T1 - Anisotropic thermal properties of talc under high temperature and pressure

AU - Yoneda, Akira

AU - Yonehara, Mitsuhide

AU - Osako, Masahiro

N1 - Funding Information: This work was supported by a Grants in Aid for Scientific Research (Nos. 19204044 and 21540444 ) from the Ministry of Education, Culture, Sports, Science and Technology , and was carried out by joint research at the Institute for Study of the Earth’s Interior, Okayama University. The authors thank S. Maruyama, N. Tomioka and T. Tsujimori for characterizing the present sample, and T. Maeda and C. Oka for assistance with the high-pressure experiment.

PY - 2012/1

Y1 - 2012/1

N2 - 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.

AB - 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.

KW - Antigorite

KW - Heat capacity

KW - Hydrous mineral

KW - Phyllosilicate

KW - Talc

KW - Thermal conductivity

KW - Thermal diffusivity

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DO - 10.1016/j.pepi.2011.10.003

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VL - 190-191

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JO - Physics of the Earth and Planetary Interiors

JF - Physics of the Earth and Planetary Interiors

ER -

Anisotropic thermal properties of talc under high temperature and pressure

Abstract

Keywords

ASJC Scopus subject areas

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