| 摘要 |
A tubular body according to the present invention has a SiC tube reinforced by SiC fiber as a base material and a metal layer formed inside the base material. Also, in a structure of the tubular body, a rare earth silicate layer is formed on a side of an outer surface of the base material. According to this, a tubular body is provided which relates to a fuel placed in a core part in a reactor for using water as a coolant and prevents generation of hydrogen due to a reaction with water in case of an accident. The tubular body is suitable for a fuel cladding tube having a structure with high reliability relative to radioactive nuclide containment at the time of a normal operation and transfer. |
