Hydrogen isotope role in the crystal orientation change of erbium oxide coatings
作者: Wei MaoMarkus WildeTakumi ChikadaKatsuyuki FukutaniHiroyuki MatsuzakiTakayuki Terai
作者单位: 1Institute of Engineering Innovation, School of Engineering, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan
2Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan
3Department of Chemistry, Graduate School of Science, Shizuoka University, 836 Ohya Suruga-ku, Shizuoka, 422-8529, Japan
4Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
5The Micro Analysis Laboratory, Tandem Accelerator, The University Museum, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan
刊名: Journal of Nuclear Materials, 2020, Vol.528
来源数据库: Elsevier Journal
DOI: 10.1016/j.jnucmat.2019.151871
关键词: Tritium permeation barrierDensity-functional theoryX-ray diffractionCrystal orientationSurface energy
原始语种摘要: Abstract(#br)Erbium oxide (Er 2 O 3 ) is a candidate material for tritium permeation barriers (TPB) applied to fusion blanket systems. To permeate through a TPB coating on a metal substrate, a hydrogen isotope must first adsorb on the surface, and then penetrate from the surface into the interior. In this work, Er 2 O 3 coatings were fabricated by arc source assisted deposition and annealing at 973 K in vacuum (<10 −5 Pa). The effect of hydrogen on the crystal orientation change of Er 2 O 3 coatings was examined by X-ray diffraction and density-functional theory studies. It was found that the surface energy of a partially H-covered initially {111} Er 2 O 3 slab increases upon annealing at 973 K, and that the associated crystal orientation change from {111} to {100} never occurs without...
全文获取路径: Elsevier  (合作)
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影响因子:1.211 (2012)

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关键词翻译
关键词翻译
  • orientation 定向
  • erbium 
  • change 变化
  • crystal 晶体
  • oxide 氧化物
  • isotope 同位素