Measurement of physical property and spectroscopy of magmatic silicate melts at high temperature and pressure

高温高压岩浆硅酸盐熔体物性及光谱测量

基本信息

批准号：
01460067
负责人：
TANIGUCHI Hiromitsu
金额：
$ 3.2万
依托单位：
Science Education Institute of Osaka Prefecture
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1991
项目状态：
已结题

项目摘要

It is important to get the knowledge of physical property and strcture of magmatic silicate melts for the better understanding of magmatic process in the Earth. By this reason, we have tried to measure the physical properties such as density, viscosity and the glass-transition temperature of some magmatic silicate melts ; diopside-anorthite and diopside-albite binary joins. The temperature ranged from room temperature to about 1800 0C, and the pressure ranged from 1 b to 20 kb. Based on the experimental results, the relationships between physical properties and physical parameters such as chemical composition and temperature were discussed.The main results are as follows :1. The temperature dependence of viscosity of the present silicate melts can be explained using the configurational entropy theory.2. The configurational entropy of magmatic silicate melts at the glass -transition temperature is the universal constant value, 8.0+1.2 J/K amw, and coincides with the reported value for high-molecular organic substance.3. The WLF(Williams, Landel, Ferry)-equation may be the universal equation which describe the viscosity-temperature relation of magmatic silicate melt independent of chemical composition. And it may be also applicable to the high-pressure condition.4. If we recognize the points 1 and 2, we can predict the viscosity and the glass-transition temperature of mixed melt using the suitable mixing model and the data of physical property of the end member melts.

重要的是要了解物理特性和岩浆硅酸盐融化，以更好地理解地球上的岩浆过程。由于这个原因，我们试图测量某些岩浆硅酸盐熔体的密度，粘度和玻璃转换温度等物理特性。 Diopside-anothite和Diopside-Albite二进制加入。温度范围从室温到约1800 0C，压力范围从1 B到20 kb。根据实验结果，讨论了物理性质与物理参数（例如化学成分和温度）之间的关系。主要结果如下：1。可以使用构型熵理论来解释本硅酸盐融化的粘度的温度依赖性2。岩浆硅酸盐在玻璃转换温度下熔融的构型熵是通用恒定值，8.0+1.2 j/k AMW，与高分子有机物质的报告值相吻合3。 WLF（Williams，Landel，Ferry） - 方程可能是一种通用方程式，它描述了岩浆硅酸盐熔体的粘度 - 温度关系，独立于化学成分。它也可能适用于高压条件4。如果我们识别点1和2，我们可以使用合适的混合模型以及最终成员熔体的物理性能数据来预测混合熔体的粘度和玻璃转换温度。