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首页> 外文会议>The 3rd International Symposium on Material Chemistry in Nuclear Environment (Material Chemistry '02 MC'02) Mar 13-15, 2002 Tsukuba >SURFACE STUDIES OF LIQUID METALS AND ALLOYS
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SURFACE STUDIES OF LIQUID METALS AND ALLOYS

机译：液态金属和合金的表面研究

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摘要

Liquid metals and alloys have been proposed for use in nuclear fusion reactors to serve as replaceable plasma-facing surfaces that remove particles and heat from reacting plasmas. Several materials are being considered for this purpose including lithium, gallium, and tin as well as some of the alloys made from these elements. In order to better understand the properties of liquid surfaces, the technique of low-energy ion scattering was used to examine the surface composition of several of these materials in vacuum as a function of temperature. Oxygen is found to rapidly segregate to the surface of several metallic liquids. The segregation process can be interpreted using a simple thermodynamic model based on Gibbs theory. In the case of an alloy of Sn and Li, Li also segregates to the liquid surface. This provides a means to produce a surface enriched in Li, which is more plasma compatible than Sn, without the need to handle large quantities of liquid Li.
机译：已经提出液态金属和合金用于核聚变反应堆，以用作可替换的面向等离子体的表面，该表面可从反应等离子体中去除颗粒和热量。为此，正在考虑几种材料，包括锂，镓和锡，以及由这些元素制成的某些合金。为了更好地理解液体表面的特性，使用低能离子散射技术检查了这些材料在真空中随温度变化的表面组成。发现氧气会迅速隔离到几种金属液体的表面。可以使用基于吉布斯理论的简单热力学模型解释偏析过程。在Sn和Li的合金的情况下，Li也偏析到液体表面。这提供了一种生产富含Li的表面的方法，该表面比Sn具有更强的等离子体相容性，而无需处理大量液态Li。

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