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http://dx.doi.org/10.9727/jmsk.2014.27.4.283

A Compression Study on a Synthetic Talc  

Kim, Young-Ho (Department of Earth and Environment Sciences and Research Institute of Natural Science, Gyeongsang National University)
Kim, Soon-Oh (Department of Earth and Environment Sciences and Research Institute of Natural Science, Gyeongsang National University)
Publication Information
Journal of the Mineralogical Society of Korea / v.27, no.4, 2014 , pp. 283-291 More about this Journal
Abstract
Talc ($Mg_3Si_4O_{10}(OH)_2$), one of sheet silicates, is soft and has been widely used in industry. Powdered talc specimen was synthesized at the pressure of 200 MPa and temperature of $600^{\circ}C$ using external heated hydrothermal high pressure apparatus. High pressure angular dispersive X-ray diffraction (ADXRD) mode experiments were performed at the Pohang Light Source (PLS) using the symmetrical diamond anvil cell (SDAC). Compression pressure was loaded up to 11.06 GPa at room temperature. This synthetic talc shows no phase transition(s) within the present pressure limit. Based on ADXRD data, bulk modulus of talc was calculated to be 72.4 GPa using Birch-Muranghan equation of state (EOS). This value is lower than that of natural talc determined previously.
Keywords
synthetic talc; SDAC; ADXRD; Birch-Murnaghan EOS; bulk modulus;
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Times Cited By KSCI : 3  (Citation Analysis)
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