High Pressure/High Temperature Studies on Transition Metals and Alloys

这项研究的目的是研究在极端的压力和温度条件下金属系统的晶体结构、电子结构和成键变化。在金刚石砧座装置中，已经实现了超过400万大气压的校准压力。这种能力与同步加速器研究设施中的激光加热技术相结合，可以在极端静态条件下检查相结构。这项研究包括来自过渡金属的原型金属合金，包括钼-Ru、钨-Re和钛-铝，以检查在高压和高温下的相稳定性。其他感兴趣的金属包括钍、普拉和钕。这些研究将提高对高压、高温以及组成对金属体系相稳定性和结构影响的基本理解。

The goal of this research is to study crystal structures, electronic structures, and bonding changes in metallic systems at extreme conditions of pressures and temperatures. Calibrated pressures of over 4 million atmospheres have been achieved in diamond anvil cell devices. This capability is combined with laser heating techniques at synchrotron research facilities to examine phase structure under extreme static conditions. The research includes prototype metallic alloys from the transition metals, including molybdenum-ruthenium, tungsten-rhenium, and titanium- aluminum to examine phase stability under imposed high pressures and temperatures. Other metals of interest include thorium, praseodymium, and neodymium. These studies should improve fundamental understanding of high pressure, high temperature, and compositional effects on phase stability and structure in metallic systems.