核融合炉第一壁のin situコーティング

抄録

A review of the different techniques for in situ coatings of magnetic fusion devices will be given focusing on the recent development of boronization. Firstly, merits of in situ coatings, selection of low Z material, and metallic getters (Ti, Cr, Be) are described. Secondly, the reduction mechanisms of oxygen impurity by boronization and Be getter will be discussed. Thirdly, practical problems of carbonization and boronization (pure B and B/C films) are presented, together with a new proposcal of B/N film coating. Finally, in situ etching techniques of carbon and boron thin films will be summarized.