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- W2079865617 abstract "층상규산염광물 중 하나인 활석(<TEX>$Mg_3Si_4O_{10}(OH)_2$</TEX>)은 경도가 매우 낮고, 산업분야에서 매우 다양하게 이용되는 재료물질이다. 실험에 이용한 활석은 외부가열열수고압기기를 이용하여 압력 200 MPa, 온도 <TEX>$600^{circ}C$</TEX>인 조건하에서 합성한 분말시료이다. 포항가속기연구소에서 대칭다이아몬드 앤빌 기기와 방사광 및 각분산 X-선회절방법을 이용하여 상온에서 11.06 GPa까지 압축실험을 시행하였다. 본 실험의 압력 범위 내에서 상변이는 관찰하지 못하였다. 체적탄성률은 버치-머내한 상태방정식을 이용하여 72.4 GPa로 결정되었으며, 이 값은 천연산활석에 비해 낮은 것으로 나타났다. Talc (<TEX>$Mg_3Si_4O_{10}(OH)_2$</TEX>), 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 <TEX>$600^{circ}C$</TEX> 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." @default.
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- W2079865617 date "2014-12-30" @default.
- W2079865617 modified "2023-09-27" @default.
- W2079865617 title "A Compression Study on a Synthetic Talc" @default.
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- W2079865617 doi "https://doi.org/10.9727/jmsk.2014.27.4.283" @default.
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