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高温高压变形实验是研究地球深部组成矿物流变学性质的重要技术手段之一.D-DIA(deformation-DIA)装置是最近10年来兴起的一种新的高温高压变形实验设备,通常可实现的最高压力为15GPa和温度约为2 000K;而同步辐射X射线衍射已经广泛地应用到物质结构科学的研究中,二者相结合,能够有效原位地研究材料物质在高温高压下的流变学性质.以美国布鲁克海文国家实验室配合有同步辐射源的D-DIA装置为例,介绍该装置的基本结构、工作原理及D-DIA装置与X射线结合技术如何实现矿物高温高压下变形过程的原位观测及相关定量力学数据的获取.这一技术突破了传统流变仪的压力局限,为在更高压力(P>4GPa)条件下研究地球深部组成物质的高温高压流变学性质提供了有效途径.
High-temperature and high-pressure deformation experiment is one of the most important technical means to study the mineralogy and rheology of earth’s deep component.D-DIA (deformation-DIA) is a new type of high temperature and high pressure deformation experiment equipment that has emerged in recent 10 years, The maximum pressure of 15GPa and temperature of about 2000K; and synchrotron radiation X-ray diffraction has been widely applied to the study of material structure science, the combination of the two can effectively study the rheological properties of materials at high temperature and pressure The paper introduces the basic structure and working principle of D-DIA device with the synchrotron radiation source of Brocken Haven National Laboratory in USA and how D-DIA device and X-ray combination technology can realize the deformation under high temperature and high pressure of mineral In-situ observations and the acquisition of relevant quantitative mechanics data.The technique breaks through the pressure limitations of traditional rheometers and provides a means to study the high-temperature and high-pressure rheological properties of Earth’s deep constituents at higher pressures (P> 4 GPa) An effective way.