Bondar Dmitry, Fei Hongzhan, Withers Anthony C, Katsura Tomoo
Bayerisches Geoinstitut, University of Bayreuth, D95447 Bayreuth, Germany.
Rev Sci Instrum. 2020 Jun 1;91(6):065105. doi: 10.1063/5.0005936.
In order to extend the pressure and compositional range where silicate melts can be quenched to form glass in a multi-anvil high-pressure and high-temperature apparatus, a rapid-quench technique, which includes an external cooling system and a low thermal-inertia assembly, was developed. This technique allows much higher cooling rates (6000-7000 °C/s) than regular piston-cylinder (130 °C/s) apparatus and multi-anvil (650 °C/s) apparatus, which are widely used in solid Earth science. Such high cooling rates are critical to avoid unwanted changes in a sample, such as melt crystallization and volatile loss, during quenching.
为了扩大在多砧高压高温设备中可淬火形成玻璃的硅酸盐熔体的压力和成分范围，开发了一种快速淬火技术，该技术包括外部冷却系统和低热惯性组件。与固体地球科学中广泛使用的常规活塞圆筒设备（130℃/s）和多砧设备（650℃/s）相比，该技术可实现更高的冷却速率（6000-7000℃/s）。如此高的冷却速率对于避免样品在淬火过程中发生不必要的变化（如熔体结晶和挥发物损失）至关重要。
