Elucidation of hydrogen isotope permeation mechanism via liquid lithium-lead in functional coatings for fusion reactor blankets

2014 Fiscal Year Final Research Report

• Project/Area Number: 25820435
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nuclear fusion studies
• Research Institution: Shizuoka University (2014); The University of Tokyo (2013)
• Principal Investigator: CHIKADA Takumi 静岡大学, 理学(系)研究科(研究院), 講師 (20614366)
• Research Collaborator: MAO Wei ; SATO Ryuju
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: トリチウム / 水素 / 透過 / リチウム鉛 / 薄膜 / 酸化エルビウム

Outline of Final Research Achievements

As a study on tritium permeation barrier in a fuel production and recovery system of a fusion reactor blanket, deuterium permeation measurements via liquid lithium-lead eutectic for erbium oxide coatings prepared on steel substrates have been performed to investigate hydrogen isotope permeation and chemical behaviors of tritium permeation barriers under liquid blanket environment. It was found that the permeation behavior via liquid lithium-lead was different from gas-phase permeation. In addition, the corrosion protection effect by the outer metal layer fabricated on erbium oxide coating has been indicated.

Free Research Field

先進エネルギー化学、核融合炉工学、トリチウム理工学