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Measurement of Thermal Diffusivity for Rocks at High Temperature and High Pressure:Application to Basalt
Author(s): 
Pages: 11-17
Year: Issue:  1
Journal: Chinese Journal of High Pressure Physics

Keyword:  high pressure and high temperaturethermal diffusivity measurement devicetransient plane source methodlaser-flash apparatusbasalt;
Abstract: Heat conduction property of minerals and rocks at high temperature and high pressure is important information to understand the dynamic mechanism,temperature distribution and the thermal evolution history of the Earth.Measurements of the thermal diffusivity of minerals and rocks at high temperature and high pressure have important significance in earth science.However,the domestic research in this field has not started.A device for measurement of thermal diffusivity at high temperature and high pressure has been developed using an YJ-3000tmulti-anvil press.The thermal diffusivity of basalt is determined at 0.5GPa,2.0GPa and 20-500℃.The extrapolations of experimental results on basalt to atmospheric pressure are in good agreement with results from LFA427laser-flash apparatus. It shows that the present setup can be used to measure the thermal diffusivity of rocks at high temperature and high pressure.
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