Precise sound velocity measurements on solids and liquids at high pressure and high temperature with direct length measurement.
Precise sound velocity measurements on solids and liquids at high pressure and high temperature with direct length measurement.
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通过直接长度测量对高压和高温下的固体和液体进行精确的声速测量。
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Baosheng Li
中科院分区：
文献类型：
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作者：
Baosheng Li
压力和/或温度下的声速测量提供了材料在极端条件下的结构行为和物理特性的重要信息。随着同步辐射X射线光源的应用，为研究晶态和非晶态材料的性质和结构提供了新的发展。在过去的十年中，我们开发了一种独特的技术，用于测量安装在布鲁克海文国家实验室国家同步辐射光源(NSLS)X-17B2上的立方体型多顶锤设备的声速，使我们能够通过同时进行X射线和超声波干涉测量，在不同的压力和温度条件下对晶体和非晶体材料进行精确的速度测量。本文测量了一些陶瓷和金属在高温下的声速，研究了这些材料在压缩/膨胀和相变过程中的行为和性能变化，并与S等人进行了比较。
Sound velocity measurements at pressure and/or temperature provide important information in the material’s structural behavior and physical properties under extreme conditions. With the application of synchrotron X‐radiation sources, new developments have emerged to facilitate the study properties and structures of crystalline and amorphous materials. In the last decade, we have developed a unique technique for measuring sound velocity in a cubic type multianvil apparatus installed at X‐17B2, National Synchrotron Light Source (NSLS) of Brookhaven National Lab, which allows us to conduct precise velocity measurements on crystalline and noncrystalline materials at various pressure and temperature conditions by conducting simultaneous X‐radiation and ultrasonic interferometry measurements. In this paper, sound velocities at high temperatures for some ceramics and metals are measured to study the behavior and property change of these materials undergoing compression/expansion as well as phase transition and s...