论文部分内容阅读
用阻抗匹配法和PZT压电探针技术 ,在 10 0GPa的冲击压力范围内测量了两种孔隙度的叙永石样品的Hugoniot物态方程 ,发现其存在低压和高压两个相区 .通过用热力学叠加原理计算的理论Hugoniot物态方程与实测结果的对比 ,确定了其高压相区的矿物组分 ,并据此分析其相变机制 .这一新的途径确认 :高岭石→莫来石高温高压转变过程中存在SiO2 和Al2 O3 的大量分凝 ,由SiO2 和Al2 O3 反应生成莫来石是形成莫来石的主要途径 .
The Hugoniot equation of state of the two types of silibisite samples was measured in the impact pressure range of 10 0 GPa by impedance matching and PZT piezoelectric probe technology and found to exist in two phases of low pressure and high pressure. The Hugoniot equation of state calculated by the superposition principle is compared with the measured results to determine the mineral components in the high-pressure phase region and to analyze the phase transition mechanism accordingly.The new approach confirms that the kaolinite → mullite high temperature There is a large amount of segregation of SiO2 and Al2 O3 during high pressure transformation. The reaction of SiO2 and Al2 O3 to form mullite is the main way to form mullite.