Modeling of Tritium Permeation Through Erbium Oxide Coatings
Modeling of Tritium Permeation Through Erbium Oxide Coatings
复制标题
氚透过氧化铒涂层的渗透模拟
DOI：
10.13182/fst11-a12386
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发表时间：
2011
影响因子：
0.9
通讯作者：
T. Muroga
中科院分区：
文献类型：
--
作者：
T. Chikada;A. Suzuki;H. Maier;T. Terai;T. Muroga
摘要 根据实验结果对氚通过氧化铒涂层的渗透进行了建模。通过引入以下主要参数逐步构建渗透模型：表面覆盖度、晶粒尺寸和能量势垒。表面覆盖模型与通过过滤电弧沉积以及金属有机分解制造的不完美涂层样品一致。晶界扩散模型也与过滤电弧沉积制备的涂层一致，但由于杂质和不同的层结构而不适用于金属有机分解涂层。能量势垒模型解释了多层涂层对额外渗透减少的贡献。渗透模型的讨论为氚渗透屏障的发展提供了新的设计理念。
Abstract Tritium permeation through erbium oxide coatings has been modeled on the basis of experimental results. Permeation models were constructed step-by-step by the introduction of the following predominant parameters: surface coverage, grain size, and energy barrier. The surface-coverage model agreed with the imperfectly coated samples fabricated by filtered arc deposition as well as by metal-organic decomposition. The grain-boundary-diffusion model also agreed with the coatings fabricated by filtered arc deposition, though it was not applicable to the metal-organic decomposition coatings because of impurities and different layer structures. The energy-barrier model explains the contributions to the additional permeation reduction of the multilayer coatings. The discussion of permeation models provides new design concepts for the development of tritium permeation barriers.