Direct measurement of the kinetics of volume and enthalpy relaxation of an Au-based bulk metallic glass
Direct measurement of the kinetics of volume and enthalpy relaxation of an Au-based bulk metallic glass
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DOI：
10.1063/1.4843716
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发表时间：
2013-12
影响因子：
3.2
通讯作者：
J. Bünz;G. Wilde
中科院分区：
文献类型：
--
作者：
J. Bünz;G. Wilde
低于其玻璃化转变的玻璃的结构弛豫是一种充分研究的现象，仍然提出了几个开放的问题。随着具有极低玻璃化转变温度的大块金属玻璃的出现，新的选择是基于通过高精度的直接测量对几个不同热力学量的时间依赖性的实验评估。在这方面的贡献的第一个直接测量的等温弛豫的体积和焓的Au基大块金属玻璃形成的报告和讨论的特征描述的基础过程。
Structural relaxation of glasses below their glass transition is a well-studied phenomenon that still poses several open issues. With the advent of bulk metallic glasses with exceptionally low glass transition temperatures, new options are available that are based on the experimental assessment of the time dependence of several different thermodynamic quantities by direct measurements with high accuracy. In this contribution the first direct measurement of the isothermal relaxation of the volume and the enthalpy of an Au-based bulk metallic glassformer are reported and discussed with respect of the characteristics describing the underlying processes.