2.5 MeV electron irradiation effect of alumina ceramics

Kinsho, Michikazu; Saito, Yoshio*; Nishizawa, Daiji*; Michizono, Shinichiro*

Journal of Nuclear Materials, 318, p.307 - 312, 2003/05

https://doi.org/10.1016/S0022-3115(03)00018-7

In order to choose an alumina ceramic material for use as a vacuum beam duct in a rapid cycling synchrotron, several kinds of alumina ceramics, having different microstructures, were examined under radiation fields of 2.5 MeV electrons. Since a long ceramic duct can only be manufactured by glazing duct segments, the mechanical strength and deterioration not only a ceramics but also in the glazing joint were measured after irradiation. These ceramic have a sufficiently high flexural strength which is more than 300 MPa before electron beam irradiation, and we could get the experimental results that there was no deterioration on the flexural strength of the ceramic after 1000 MGy electron beam irradiation. No noticeable changes could be seen in the measured tensile strength of Ti-ceramic brazed samples after 1000 MGy electron beam irradiation.