Author/Authors :
Kawamura، نويسنده , , H and Takahashi، نويسنده , , H and Yoshida، نويسنده , , N and Mishima، نويسنده , , Y and Ishida، نويسنده , , K and Iwadachi، نويسنده , , T and Cardella، نويسنده , , A and van der Laan، نويسنده , , J.G and Uchida، نويسنده , , M and Munakata، نويسنده , , K and Sato، نويسنده , , Y and Shestakov، نويسنده , , V and Tanaka، نويسنده , , S، نويسنده ,
Abstract :
Since 1997, beryllide application as the neutron multiplier has been proposed in Japan and preliminary investigations revealed that some beryllides such as Be12Ti have excellent properties compared with beryllium metal. Recently, several international R&D programs were performed. Some pebbles of modified Be12Ti that included the Be phase were obtained by the rotating electrode method. Basic characterization using HIPped Be12Ti has also been performed. Preliminary experiments indicate that compatibility with stainless steel and tritium breeder materials, deuterium release, natural oxidation and oxidations by steam interaction were better than the behavior of beryllium. Preliminary neutron irradiation effects were studied in JMTR and by charged particle irradiation. It was observed that Be12Ti has less radiation damage than beryllium. In a future experiment, Japanese Be12Ti samples will be included in a long European irradiation program on beryllium to produce up to 6000 appm He. This is an IEA collaborative experiment, to evaluate neutron irradiation effects.
