Noncontact thermophysical property measurement of liquid cerium by electrostatic levitation

Noncontact thermophysical property measurement of liquid cerium by electrostatic levitation
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静电悬浮非接触液态铈热物性测量

DOI:
10.1557/jmr.2009.0278
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发表时间:
2009-07
影响因子:
2.7
通讯作者:
Okada, Junpei T.
Okada, Junpei T.
中科院分区:
材料科学4区
文献类型:
--
作者:
Yuan, Zhangfu;Li, Jianqiang;Ishikawa, Takehiko;Yu, Ji;ing;Yoda, Shinichi;Watanabe, Yuki;Okada, Junpei T.

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了解活性金属的热物理性质对了解其冶金过程和进一步的工业应用至关重要。然而,由于高反应性以及坩埚和气体环境中的熔体污染,使用常规方法(如无晶石滴法)很难获得准确的性能值。在本研究中,利用真空静电悬浮器克服了这些困难,使液体铈在过冷状态下的热物理性质的非接触测定成为可能。报道了熔融铈的密度、表面张力和粘度的数据,以及它们与温度的关系。
The knowledge of thermophysical properties of active metals is critical to understand their metallurgical processes and further industrial applications. However, due to high reactivity and melt contamination from a crucible and gaseous environment, accurate values of the properties are hard to obtain using conventional methods such as the sessiledrop method. In the present study, a vacuum electrostatic levitator was used to circumvent these difficulties and enabled the noncontact determination of thermophysical properties of liquid cerium even in an undercooled state. The data of density, surface tension, and viscosity of molten cerium were reported, as well as their temperature dependence.
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