Model for evaluating and predicting thermal expansivity at high temperatures for geophysical minerals |
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| Institution: | 1. Materials Science, Engineering & Commercialization, Texas State University, San Marcos, TX 78666, United States;2. Ingram School of Engineering, Texas State University, 601 University Drive, San Marcos, TX 78666, United States;1. Université de Lyon, Ecole Centrale de Lyon, INL-UMR5270-CNRS, 36 av. Guy de Collongue, F69134 Ecully cedex, France;2. LPN-UPR20/CNRS, route de Nozay, 91460 Marcoussis, France;1. State Key Laboratory for Mechanical Behavior of Materials & School of Microelectronics, Xi''an Jiaotong University, Xi''an 710054, China;2. Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing 210023, China;3. Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China;1. Department of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, China;2. Department of Applied Physics, The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan |
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| Abstract: | In the present communication, a new relationship for temperature dependence of thermal expansivity at high temperatures has been reported. The relation is acquired on the ground of high-temperature experimental data collected by Anderson for six geophysical minerals, viz. NaCl, KCl, MgO, CaO,Mg2SiO4 and Grossular Garnet. According to the present study, the thermal expansivity varies exponentially with temperature above the Debye temperature. The model projected in the present study is valuable to predict data on thermal expansivity in the high-temperature domain where experimental data have not been found so far. |
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