聚变堆第一壁涂层材料

First Wall Coating Materials for Fusion Reactors

由于使用低Z涂层材料可使传统的结构材料和技术保持不变并能降低等离子体杂质,因而为设计提供了灵活性。低Z涂层可由元素Be,B,C,Al,Ti,V及其化合物中选择。文中介绍了涂层工艺和评价方法。添加约10wt%SiC的热解碳几乎能完全抑制化学溅射。60块C+SiC涂层石墨砖在DoubletⅢ托卡马克的整个照射期间性能令人满意。

Because of using low Z coating materials, the conventional first wall construction materials and techniques can be retained and plasma impurity levels can be reduced. The elements Be, B, C, Al,Ti,V and their compounds are selected as low Z coatings.The coating process and the evaluation methods are described in this paper. It was found that the addition of～10wt%SiC to pyrolytic carbon provided almost complete suppression of chemical sputtering. The 60 tile array of C+SiC alloy-coated graphite performed satisfactorily during the entire exposure history of the Doublet Ⅱ ToKamak.