论文部分内容阅读
高温高压实验是除地球物理和地球化学方法之外,研究地球深部物质和性质的重要手段之一.多面砧压机是广泛使用的高温高压实验设备,主要用来研究上地幔温压范围内的实验岩石学和矿物相变动力学等问题.主要介绍中国地质大学(武汉)地球深部研究实验室新引进的Walker型28GPa多面砧压机的原理和结构、压力标定方法和常用的压力标定材料,并根据金属铋在2.55和7.7GPa(25℃)的结构相变,以及石英在3.2GPa、1200℃向柯石英的转变对多面砧压机18/12装置(八面体传压介质边长/碳化钨截角边长)进行了压力标定,该装置可实现的最高压力和温度约为8GPa和2000℃.最后还探讨了高温高压实验在地球科学中的应用.
High-temperature and high-pressure experiments are one of the most important methods for studying the deep-sea matter and properties in addition to geophysical and geochemical methods. Multi-face anvil press is a widely used high-temperature and high-pressure experimental equipment and is mainly used to study the temperature and pressure in the upper mantle Experimental petrology and kinetics of mineral phase transformation, etc. The principle and structure of the Walker 28GPa multi-face anvil press newly introduced by Deep Earth Research Laboratory of China University of Geosciences (Wuhan) and the pressure calibration methods and pressure calibration materials are introduced. Based on the structural phase transition of bismuth metal at 2.55 and 7.7 GPa (25 ° C) and the conversion of quartz to coesite at 3.2 GPa and 1200 ° C, the multifaceted anvil press 18/12 device (octahedron pressure medium side length / tungsten carbide And the maximum pressure and temperature can be achieved at about 8GPa and 2000 ℃. Finally, the application of high temperature and high pressure experiments in geosciences was also discussed.