Development of a new method to measure surface tension of molten oxides
Development of a new method to measure surface tension of molten oxides
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DOI：
10.32908/hthp.v50.857
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发表时间：
2021-01-01
影响因子：
1.1
通讯作者：
Ohishi, Yuji
中科院分区：
文献类型：
--
作者：
Kondo, Toshiki;Muta, Hiroaki;Ohishi, Yuji
熔融氧化物的物理性质如粘度和表面张力在各个领域中是重要的。然而，由于熔融氧化物的高熔点、高反应性和高蒸气压，测量熔融氧化物的性质非常困难。因此，熔融氧化物的物理性质几乎没有报道。因此，我们开发了一种新的方法，称为“撞击法”，用于在很短的时间内测量熔融氧化物的表面张力，使用空气动力悬浮技术。在这项工作中，我们开发了一个装置，用于测量熔融Al 2 O3的表面张力，并与其他方法的值进行比较，被认为是参考值。结果表明，在2500 K左右，熔融Al 2 O3的表面张力约为0.72 N/m，与参考值接近，而且测量时间很短（约80 ms）。因此，可以期待通过该方法能够测定ZrO 2、UO 2等蒸气压高的熔融材料的表面张力。
Physical properties of molten oxides such as viscosity and surface tension are important in various fields. However, it is very difficult to measure the properties of molten oxides owing to their high melting points, high reactivity, and high vapor pressure. Hence, the physical properties of molten oxides are scarcely reported. Therefore, we developed a new method, termed the "impingement method," for measuring the surface tension of molten oxides in a very short time, using the aerodynamic levitation technique. In this work, we developed an apparatus for measuring the surface tension of molten Al2O3 and compared the value with that of other methods, considered as reference values. Results showed that the surface tension of molten Al2O3 was approximately 0.72 N/m at around 2500 K, which is close to the reference value; moreover, the measurements could be obtained in a very short time (approximately 80 ms). Thus, it is expected that the surface tension of molten materials with high vapor pressures such as ZrO2 and UO2 can be measured using this method.