Measurements of Density of Liquid Oxides with an Aero-Acoustic Levitator.
Measurements of Density of Liquid Oxides with an Aero-Acoustic Levitator.
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DOI：
10.3390/ma14040822
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发表时间：
2021-02-09
期刊：
影响因子：
--
通讯作者：
Telle R
中科院分区：
文献类型：
--
作者：
Ushakov SV;Niessen J;Quirinale DG;Prieler R;Navrotsky A;Telle R
为了热力学建模和陶瓷的先进增材制造和激光焊接，建立液态混合模型，需要熔化温度在2000℃以上的液态氧化物熔体密度。最近报道了在国际空间站上用静电悬浮器进行的实验中对熔融稀土氧化物密度的精确测量。在这项工作中，我们提出了一种利用激光加热和机器视觉算法的气动声学悬浮器对高速摄像中液态氧化物的密度和热膨胀进行地面测量的方法。得到熔点下液态氧化物的密度值：Y2O3 4.6±0.15；Yb2O3 8.4±0.2；Zr0.9Y0.1O1.95 4.7±0.2；zr0.95 y0.050 o1.975 4.9±0.2；HfO2 8.2±0.3 g/cm3。采用背光照明、光谱热分析法和多发射器声悬浮器可以提高密度和热膨胀测量的准确性。
Densities of liquid oxide melts with melting temperatures above 2000 °C are required to establish mixing models in the liquid state for thermodynamic modeling and advanced additive manufacturing and laser welding of ceramics. Accurate measurements of molten rare earth oxide density were recently reported from experiments with an electrostatic levitator on board the International Space Station. In this work, we present an approach to terrestrial measurements of density and thermal expansion of liquid oxides from high-speed videography using an aero-acoustic levitator with laser heating and machine vision algorithms. The following density values for liquid oxides at melting temperature were obtained: Y2O3 4.6 ± 0.15; Yb2O3 8.4 ± 0.2; Zr0.9Y0.1O1.95 4.7 ± 0.2; Zr0.95Y0.05O1.975 4.9 ± 0.2; HfO2 8.2 ± 0.3 g/cm3. The accuracy of density and thermal expansion measurements can be improved by employing backlight illumination, spectropyrometry and a multi-emitter acoustic levitator.
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影响因子：
3.4
作者：
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DOI：
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发表时间：
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影响因子：
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