ABSTRACT Measuring the surface tension of molten ZrO2 is critical to determine the progression of a severe accident in a nuclear power plant. However, no experimental reports have been published pertaining to the surface tension of liquid ZrO2 because of its high melting point, high reactivity, and high vapor pressure, among other factors. Thus, in this study, the surface tension of ZrO2 was measured by using the droplet impingement method, which can help determine the surface tension of molten oxides in an extremely short time. The impingement behavior could be determined to analyze the surface tension from the image. The surface tension was approximately 0.91 N/m at 2988 K, which is the melting point of ZrO2, and this value was consistent with the data estimated using the oscillation droplet method. Compared with a past report regarding the surface tension of the molten Zr-O system, the surface tension of molten Zr was noted to reduce with oxidation.

中文翻译：

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液滴撞击法测量熔融氧化锆的表面张力

摘要 测量熔融 ZrO2 的表面张力对于确定核电厂严重事故的进展至关重要。然而，由于液态 ZrO2 的高熔点、高反应性和高蒸气压等因素，还没有发表有关其表面张力的实验报告。因此，在本研究中，使用液滴撞击法测量 ZrO2 的表面张力，这有助于在极短的时间内确定熔融氧化物的表面张力。可以确定撞击行为以分析图像的表面张力。表面张力在 2988 K 时约为 0.91 N/m，这是 ZrO2 的熔点，该值与使用振荡液滴法估计的数据一致。