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Phase Analysis of the Si-O-2 System
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作者:Ikhmayies, SJ (Ikhmayies, Shadia J.) ENERGY TECHNOLOGY 2017: CARBON DIOXIDE MANAGEMENT AND OTHER TECHNOLOGIES 编者:Zhang, L; Drelich, JW; Neelameggham, NR; Guillen, DP; Haque, N; Zhu, J; Sun, Z; Wang, T; Howarter, JA; Tesfaye, F; Ikhmayies, S; Olivetti, E; Kennedy, MW 丛书: Minerals Metals & Materials Series 页: 333-342 DOI: 10.1007/978-3-319-52192-3_33 出版年: 2017 文献类型:Proceedings Paper 会议名称 会议: Energy Technologies Symposium 会议地点: San Diego, CA 会议日期: FEB 26-MAR 02, 2017 会议赞助商:TMS Energy Comm 摘要 In this work the equilibrium temperature-composition phase diagrams of the Si-O-2 system were calculated using Thermo-Calc software in the temperature range 500-3000 K. Constituents of stable phases were obtained, and the amounts of certain phases where investigated with the variations in the composition of oxygen and temperature. It is found that quartz with silicon represent a stable phase in the temperature range 500-1150 K, while tridymite with silicon represent a stable phase in the temperature range 1150-1700 K. A liquid phase is found besides tridymite in the temperature range 1700-1750 K, and a stable phase of cristobalite with liquid appears in the temperature range 1750-2000. The maximum amounts of quartz, tridymite, and cristobalite are found at oxygen mole percent of 67.7%. These results are important to better understand the process steps in the production of silicon for different applications including silicon solar cells. 关键词 作者关键词:Quartz; Equilibrium; Phase diagrams; Silicon; Silicon solar cells KeyWords Plus:QUARTZ |
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