Development of Dynamic Measurement techniques for Thermophyscal Properties using Optical Method

光学法热物性动态测量技术的发展

基本信息

批准号：
09555076
负责人：
NAGASAKI Yuji
金额：
$ 4.1万
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-09555076/
关键词：
Thermophysical Properties Measurement Techniques Remote Sensing Surface Tension Viscosity Diffusion Coefficient

项目摘要

The results obtained from the present research are summarized as follows.(1) Surface Laser-Light scattering Method (Surface Tension and Viscosity)(a) High Temperature Melts: In 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.(b) Xe-Water: By using the developed apparatus, we observed variations of surface tension and viscosity of the Xe aqueous solution before formation and after decomposition of the hydrate crystals by varying the system pressure at constant temperature.(2) Dynamic Light scattering Method (Viscosity and Diffusion Coefficient)We have attempted to apply the dynamic light scattering method to observe the viscous behavior near the melting point of LiィイD22ィエD2BィイD24ィエD2OィイD27ィエD2 in the temperature range above 1000 K. We have also attempted to apply the technique in order to detect the change of diffusion coefficient before hydrate formation of Xe-water system.

目前的研究结果总结如下。 (1)表面激光光散射法(表面张力和粘度)(a)高温熔体：为了提高和评估表面激光光散射法的准确性( SLLS）装置，我们在高达1243 K的温度范围内测量了熔融氯化钠的表面张力和粘度。测量的表面张力的精度估计为±4.1%。在 1685 至 1850 K 的温度范围内测量了熔融硅 (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) mNmIID1 -1 D1 (b) Xe-Water：通过使用开发的设备，我们观察了 Xe-Water 的表面张力和粘度的变化。通过在恒温下改变系统压力，在水合物晶体形成之前和分解之后的Xe水溶液。(2)动态光散射方法（粘度和扩散系数）我们尝试应用动态光散射方法来观察附近的粘性行为。 LiD22D2BD24D2OD27D2 在 1000 K 以上的温度范围内的熔点。我们有还尝试应用该技术来检测氙-水体系水合物形成前扩散系数的变化。