Anisotropic thermal properties of talc under high temperature and pressure

Akira Yoneda, Mitsuhide Yonehara, Masahiro Osako

Research output: Contribution to journalArticle

3 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 languageEnglish
Pages (from-to)10-14
Number of pages5
JournalPhysics of the Earth and Planetary Interiors
Volume190-191
DOIs
Publication statusPublished - Jan 2012

Fingerprint

talc
thermal conductivity
thermodynamic properties
heat capacity
thermal diffusivity
diffusivity
specific heat
antigorite
olivine
atmospheric pressure
anisotropy
anomalies
anomaly
pulses

Keywords

  • Antigorite
  • Heat capacity
  • Hydrous mineral
  • Phyllosilicate
  • Talc
  • Thermal conductivity
  • Thermal diffusivity

ASJC Scopus subject areas

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

Cite this

Anisotropic thermal properties of talc under high temperature and pressure. / Yoneda, Akira; Yonehara, Mitsuhide; Osako, Masahiro.

In: Physics of the Earth and Planetary Interiors, Vol. 190-191, 01.2012, p. 10-14.

Research output: Contribution to journalArticle

@article{be63cf0ce7b94d0abf058a53dded47c6,
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",
year = "2012",
month = "1",
doi = "10.1016/j.pepi.2011.10.003",
language = "English",
volume = "190-191",
pages = "10--14",
journal = "Physics of the Earth and Planetary Interiors",
issn = "0031-9201",
publisher = "Elsevier",

}

TY - JOUR

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

AU - Yoneda, Akira

AU - Yonehara, Mitsuhide

AU - Osako, Masahiro

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

UR - http://www.scopus.com/inward/record.url?scp=81355147378&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=81355147378&partnerID=8YFLogxK

U2 - 10.1016/j.pepi.2011.10.003

DO - 10.1016/j.pepi.2011.10.003

M3 - Article

VL - 190-191

SP - 10

EP - 14

JO - Physics of the Earth and Planetary Interiors

JF - Physics of the Earth and Planetary Interiors

SN - 0031-9201

ER -