Viscosity measurements of metallic melts using the oscillating drop technique
Viscosity measurements of metallic melts using the oscillating drop technique
复制标题
DOI：
10.1063/1.4953871
复制
发表时间：
2016-06
影响因子：
4
通讯作者：
P. Heintzmann;Fan Yang;S. Schneider;G. Lohöfer;A. Meyer
中科院分区：
文献类型：
--
作者：
P. Heintzmann;Fan Yang;S. Schneider;G. Lohöfer;A. Meyer
通过基准降低重力实验，我们已经验证了测量的粘度的二元Zr-Ni玻璃形成液体利用振荡滴技术结合地面静电悬浮（ESL）。只要悬浮液滴的单一振荡模式的内部粘性阻尼主导外部扰动，就可以获得可靠的粘度数据。这可以通过不存在结果的样品质量依赖性来验证。因此，ESL是用于研究在约10-250 mPa·s范围内的金属玻璃形成熔体的粘度的极好工具，样品质量低于100 mg。为此，我们表明，对于二元Zr-Ni熔体，粘度是定性控制的堆积密度。
By means of benchmarking reduced gravity experiments, we have verified the measured viscosity of binary Zr-Ni glass forming liquids utilizing the oscillating drop technique combined with ground-based electrostatic levitation (ESL). Reliable viscosity data can be obtained as long as internal viscous damping of a single oscillation mode of a levitated drop dominates external perturbations. This can be verified by the absence of a sample mass dependence of the results. Hence, ESL is an excellent tool for studying the viscosity of metallic glass forming melts in the range of about 10–250 mPa s, with sample masses below 100 mg. To this end, we show that, for binary Zr-Ni melts, the viscosity is qualitatively controlled by the packing density.