Impurities and Evaluation of Induced Activity of SiC Composites Prepared with Chemical Vapor Infiltration.

• NODA Tetsuji

  National Research Institute for Metals, Tsukuba Laboratories

• ARAKI Hiroshi

  National Research Institute for Metals, Tsukuba Laboratories

• SUZUKI Hiroshi

  National Research Institute for Metals, Tsukuba Laboratories

• ABE Fujio

  National Research Institute for Metals, Tsukuba Laboratories

• OKADA Masatoshi

  National Research Institute for Metals, Tsukuba Laboratories

抄録

Carbon fiber reinforced SiC (C/SiC) and SiC fiber reinforced SiC (SiC/SiC) composites were fabricated by a chemical vapor infiltration (CVI) method to obtain the composites with minimized impurity contamination. The neutron activation analysis showed that 30 elements were detected as impurities. However total impurity concentrations in the C/SiC and SiC/SiC were lower than 14.5 wt ppm and 9.80 wt ppm, respectively.<BR>The evaluation of induced activity under the simulation of fusion neutron irradiation of 10 MW•y/m² was made based on the impurity concentration. The dose rates of both composites were assumed to decrease by about 6 orders of magnitude in one day cooling and by 9 orders of magnitude in several ten years. The results indicate that the present composites behave excellent in terms of low activation and the CVI is a potential process to obtain high-purity composites.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌）

  Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌） 31 (10), 1059-1065, 1994

  一般社団法人 日本原子力学会

キーワード

• carbon fiber
• silicon carbides
• fiber
• ceramics
• composite
• chemical vapor infiltration
• neutron activation analysis
• low activation
• induced activity
• first wall
• impurities

詳細情報

• CRID: 1390282679070682240
• NII論文ID: 130000825731
• DOI: 10.3327/jnst.31.1059
• COI: 1:CAS:528:DyaK2cXmvVyitro%3D
• ISSN: 18811248
• ISSN: 00223131
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可