Keywords

pressure dependence, thermal conductivity, pyrophyllite, temperature distribution, anisotropic thermal conductivities

Abstract

A mathematical model for calculating the temperature distribution as a function of power delivered to a line source and the thermal conductivity of the surrounding medium in the pressure cell of a cubic-anvil press was derived. The model will handle anisotropic thermal conductivities. A simple sample assembly consisting of a line source and two or three thermocouple junctions is described. A comparison of measured to calculated temperatures yields the thermal conductivity. Thermal conductivity measurements were made on natural pyrophyllite and baked pyrophyllite to 40 kbar. For the natural pyrophyllite the thermal conductivity parallel to the bedding plane at room temperature increased with pressure from 13 to 15 (mcal/s cm K) over the pressure range but for the baked material it decreased with pressure.

Original Publication Citation

Chen, Wei and D. L. Decker."Pressure dependence of the thermal conductivity of pyrophyllite to 4 kbar." Journal of Applied Physics 71 (1992): 2624-2627.

Document Type

Peer-Reviewed Article

Publication Date

1992-03-15

Permanent URL

http://hdl.lib.byu.edu/1877/1346

Publisher

AIP

Language

English

College

Physical and Mathematical Sciences

Department

Physics and Astronomy

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