Thermophysical Properties of Molten Silicon

熔融硅的热物理性质

• 批准号: 09450096
• 负责人: NAGASAKA Yuji
• 金额: $ 1.47万
• 依托单位: Keio University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09450096/
• 关键词: Molten Silicon; Thermophysical Properties; Measurement Techniques; Molecular Simulation; Standard Reference Data

The results obtained from the present research are summarized as follows.(1) Molecular SimulationVapor-liquid equilibrium simulation were performed using the Stillinger-weber potential with the Gibbs ensemble Monte Carlo method. In the low temperature region from about 3000 to 3500 K, our calculation show the stability of phases and good agreement with several experimental results. On the whole, there is little dependence on the size of the system except near the critical point of silicon: TィイD2cィエD2=7500±500 K and ρィイD2cィエD2=750±100 kgmィイD1-3ィエD1 as determined by the law of rectilinear diameter.(2) Surface Laser-Light scattering MethodIn order to improve and evaluate the accuracy of the surface laser-light scattering (SLLS) apparatus, we have measured the surface tension and viscosity of molten NaCl in the temperature range up to 1243 K. The accuracy of the measured surface tension is estimated to be ±4.1%. The surface tension and viscosity of molten silicon (99.9995%) have been measured in the temperature range from 1685 to 1850 K. The obtained surface tension has been correlated by the following equation: σ=800-0.13(T-1685) mNmィイD1-1ィエD1 The oxygen concentration in the sample after the experiment was analyzed.

从本研究中获得的结果总结如下。(1)分子模拟采用Stillinger-Weber势和Gibbs系综Monte Carlo方法对汽液平衡进行了模拟。在3000 ~ 3500 K的低温区，计算结果显示了相的稳定性，并与实验结果吻合较好。总的来说，除了在硅的临界点附近外，对系统的尺寸几乎没有依赖性：T_（2c）_（(2)表面激光光散射法为了提高和评价表面激光光散射（SLLS）装置的准确性，我们测量了1243 K以下NaCl熔体的表面张力和粘度。表面张力的测量精度估计为± 4.1%。在1685 ~ 1850 K温度范围内测定了熔融硅（99.9995%）的表面张力和粘度。所获得的表面张力通过以下方程关联：σ=800-0.13（T-1685）mNm Δ D1-1 Δ D1分析实验后样品中的氧浓度。

项目成果

本田尚丈: "Gibbsアンサンブル法によるシリコンの相平衡シミュレーション"第34回日本伝熱シンポジウム講演論文集. 34. 415-416 (1997)

Naotake Honda：“使用吉布斯系综方法进行硅的相平衡模拟”第 34 届日本传热研讨会论文集 34. 415-416 (1997)。

M.Ohnishi: "Measurement of Surface Tension and Viscosity of Molten LINbo_3 by surface Laser-Light Scaltering Method"Broc.15th European Conf. on Thermophus.Prop. 15. (1999)

M.Ohnishi：“通过表面激光光散射法测量熔融 LINbo_3 的表面张力和粘度”Broc.15th 欧洲会议。

Kawasaki, K.: "Measurement of the Surface Tension of Molten Silicon by the use of Repplon"High Temperatures-High Pressures. 30. 91-96 (1998)

Kawasaki, K.：“使用 Repplon 测量熔融硅的表面张力”高温高压。

Kawasaki, N.,: "Measurement of Surface Tension of Moten Silicon by the Use of Ripplon"High Temperature-High Pressures. 30. 91-96 (1998)

Kawasaki, N.，“使用 Ripplon 测量 Moten Silicon 的表面张力”高温高压。

Maeda, M.: "Measurement of Surface Tension and Viscosity of High Temperature Melts by Surface Laser-Light Scattering Method"Proc. 5th Asian Thermophysical Properties Conference. 5. 607-610 (1998)

Maeda, M.：“通过表面激光光散射法测量高温熔体的表面张力和粘度”Proc。