Deuterium permeation and retention behaviors in erbium oxide-iron multilayer coatings
Deuterium permeation and retention behaviors in erbium oxide-iron multilayer coatings
复制标题
氧化铒-铁多层涂层中的氘渗透和保留行为
DOI：
10.1016/j.fusengdes.2017.03.123
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发表时间：
2017
影响因子：
1.7
通讯作者：
Takumi Chikada
中科院分区：
文献类型：
--
作者：
Seira Horikoshi;Jumpei Mochizuki;Yasuhisa Oya;Takumi Chikada
陶瓷-金属多层涂层中氢同位素的迁移行为已被阐明，以进一步改善燃料系统和放射安全。氧化铒 (Er2O3) 涂层是通过过滤真空电弧沉积 (VAD) 在减少活化的铁素体/马氏体钢基材上制备的。通过射频磁控溅射制备铁（Fe）层或在 Er2O3 涂层上覆盖铁箔。采用VAD技术在Er2O3-Fe涂层上制备了Er2O3-Fe-Er2O3三层涂层。晶界扩散模型是根据我们之前的工作中 Er2O3 单层涂层的晶粒结构分析和氘深度剖面的结果构建的。不同Fe层厚度的Er2O3-Fe两层涂层的氘渗透率没有显着差异。由于内外Er2O3层的两个扩散势垒的贡献，Er2O3-Fe-Er2O3三层涂层的PRF高达104。此外，三层涂层的氘浓度是Er2O3-Fe涂层的三倍，尽管从燃料系统中氚库存的角度来看，该浓度小得可以忽略不计。
Hydrogen isotope migration behaviors in ceramics-metal multilayer coatings have been elucidated for a further improvement of fueling system and radiological safety. Erbium oxide (Er2O3) coatings were fabricated by filtered vacuum arc deposition (VAD) on reduced activation ferritic/martensitic steel substrates. An iron (Fe) layer was fabricated by radio-frequency magnetron sputtering or covered with an Fe foil on the Er2O3coating. An Er2O3-Fe-Er2O3three-layer coating was also fabricated by the VAD on the Er2O3-Fe coating. The grain boundary diffusion model was constructed based on the results of grain structure analysis and deuterium depth profile for the Er2O3single-layer coating from our previous works. The Er2O3-Fe two-layer coatings with different Fe layer thickness showed no significant difference in deuterium permeability. The Er2O3-Fe-Er2O3three-layer coating showed a PRF of up to 104due to a contribution of two diffusion barriers of the inner and outer Er2O3layers. In addition, the three-layer coating had three times higher deuterium concentration than the Er2O3-Fe coating, although the concentration will be negligibly small from the perspective of tritium inventory in the fuel system.