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タイトル: | Role of partial molar enthalpy of oxides on Soret effect in high-temperature CaO–SiO₂ melts |
著者: | Shimizu, Masahiro https://orcid.org/0000-0002-9948-891X (unconfirmed) Matsuoka, Jun Kato, Hiroshi Kato, Takeyuki Nishi, Masayuki https://orcid.org/0000-0002-9387-2152 (unconfirmed) Visbal, Heidy Nagashima, Kohji Sakakura, Masaaki Shimotsuma, Yasuhiko https://orcid.org/0000-0003-0588-3167 (unconfirmed) Itasaka, Hiroki Hirao, Kazuyuki Miura, Kiyotaka https://orcid.org/0000-0001-6199-7113 (unconfirmed) |
著者名の別形: | 清水, 雅弘 加藤, 毅之 平尾, 一之 三浦, 清貴 |
発行日: | 19-Oct-2018 |
出版者: | Springer Nature America, Inc |
誌名: | Scientific Reports |
巻: | 8 |
論文番号: | 15489 |
抄録: | The Soret effect or thermodiffusion is the temperature-gradient driven diffusion in a multicomponent system. Two important conclusions have been obtained for the Soret effect in multicomponent silicate melts: first, the SiO₂ component concentrates in the hot region; and second, heavier isotopes concentrate in the cold region more than lighter isotopes. For the second point, the isotope fractionation can be explained by the classical mechanical collisions between pairs of particles. However, as for the first point, no physical model has been reported to answer why the SiO₂ component concentrates in the hot region. We try to address this issue by simulating the composition dependence of the Soret effect in CaO–SiO₂ melts with nonequilibrium molecular dynamics and determining through a comparison of the results with those calculated from the Kempers model that partial molar enthalpy is one of the dominant factors in this phenomenon. |
著作権等: | © The Author(s) 2018. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
URI: | http://hdl.handle.net/2433/234939 |
DOI(出版社版): | 10.1038/s41598-018-33882-1 |
PubMed ID: | 30341314 |
出現コレクション: | 学術雑誌掲載論文等 |
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