Fabrication of insulator coatings for fusion reactor liquid lithium blankets
Fabrication of insulator coatings for fusion reactor liquid lithium blankets
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DOI：
10.1016/j.jpcs.2004.07.024
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发表时间：
2005-02
影响因子：
4
通讯作者：
A. Sawada;T. Terai;A. Suzuki;M. Yamawaki
中科院分区：
文献类型：
--
作者：
A. Sawada;T. Terai;A. Suzuki;M. Yamawaki
绝缘涂料的研制是聚变堆液态锂包层研制的重要课题之一。化合物AlN、Y2O3和Er2O3因其高电阻和与液态锂的良好相容性而被认为是陶瓷涂层的候选材料。本研究采用射频溅射法制备了这些化合物的涂层，并对涂层的性能、厚度、组成比、杂质、结晶度和电阻率进行了研究。这种涂层是多晶的，几乎是化学计量比。虽然在测量中用不同种类的电极分散了视电阻率数据，但涂层具有足够高的电阻率。退火后，涂层的结晶度提高，但Y2O3层和Er2O3层表面出现了一些裂纹。
The development of insulating coatings is one of the most important subjects in fusion reactor liquid lithium blanket research and development. The compounds AlN, Y2O3and Er2O3are thought to be candidate materials for ceramic coatings because of their high electrical resistance and their high compatibility with liquid lithium. In this study, the coatings of these compounds were fabricated by the RF sputtering method, and their properties, thickness, composition ratio, impurities, crystallinity and resistivity were investigated. The coatings were polycrystalline and almost stoichiometric. Although the apparent resistivity data were scattered with different kinds of electrodes in the measurement, the coatings had enough high resistivity. After annealing, the crystallinity of the coatings became higher, but some cracks were observed on the surface of Y2O3and Er2O3coatings.