Thermal conductivity is one of the most important parameters for the design of fusion
reactors using ceramic materials. Thermal diffusivity of ceramics decreases by phonon …

In ceramic materials, heat is mainly carried by phonon. During and after irradiation, phonon
is scattered by neutron-induced defects, and the neutron-irradiated specimen showed …

Unlike metals, heat in ceramic materials is mainly carried by phonons, and neutron-
irradiated ceramics show serious degradation in thermal diffusivity. In this work, typical …

A hot-pressed Si3N4 was neutron-irradiated in the JOYO experimental fast reactor. The
ranges of irradiation fluence and temperature were (0.4–3.7)× 1026n/m2 (E> 0.1 MeV) and …

Abstract α-Al2O3, AlN, β-Si3N4, and β-SiC ceramic specimens were irradiated by a 30 MeV
electron beam up to 0.01 dpa at 80° C, and they started to recover thermal diffusivity with …

Silicon nitride ceramics is a candidate for inert matrix, since it is very tolerant for neutron
irradiation and it has relatively high thermal conductivity. For these reasons, Si 3 N 4 …

Several structural ceramic materials possess many superior properties for nuclear
applications, such as blanket of future fusion reactor or core material of high-temperature …

Measurements of thermal diffusivity and positron annihilation lifetime were performed on
neutron-and 30 MeV electron-irradiated ceramics. Thermal diffusivity of heavily neutron …

At present, the electricity used in our life is mainly supplied by fossil-fueled, hydroelectric
and nuclear power plants. 1) Nuclear power plants emit very small amount of carbon …

For the transmutation of the very long half-lived isotopes which are separated from the spent
nuclear fuels, it is necessary to find proper inert matrices these are stable under heavy …