Silicon carbide is candidate plasma-facing and structural material in nuclear reactors. Which of the Silicon carbide type is okay to use for irradiation 6H-SiC or 3C-SiC or 4H-SiC? Which one is the same as Silicon carbide composite?
May be the strongest type of SiC is 4H-SiC and it may be the most suitable as a radiation detector. It has the highest bandgap among all types of 3.23 eV.
For using this material as a radiation detector please refer to: Article Silicon carbide and its use as a radiation detector material
However, all other materials can be used as a radiation detector as Silicon can be used as a radiation detector.
SiC based composite is practically the only nonmagnetic material that could be used in structural applications in fusion environment due to low activation in neutron flux, operating temperature higher than 1000 °C and relative radiation-defects resistance.
· Materials for use as control rod cladding and guide tubes within very high temperature reactor designs that are required to have high thermal stability, good fracture toughness, and high irradiation stability during service [Ref 1].
· There is recently renewed interest in 3C–SiC as nuclear constructional ceramic material and as the main fission product containment layer in tristructural isotropic (TRISO) Coated Particles (CPs) for the High Temperature Reactor (HTR) and Very High Temperature Reactor (VHTR) [Ref 2].
[Ref 1] W. E. Windes, P. A. Lessing, Y. Katoh, L. L. Snead, E. Lara-Curzio, J. Klett, J. C. Henager and R. J. Shinazsk, "Structural Ceramic Composites for Nuclear Applictation," Idaho National Laboratory, Idaho Falls, 2005.
[Ref 2] I.J. van Rooyen, J.A.A. Engelbrecht, A. Henry, E. Janzén, J.H. Neethling, P.M. van Rooyen, “The effect of grain size and phosphorous-doping of polycrystalline 3C–SiC on infrared reflectance spectra”, Journal of Nuclear Materials 422 (2012) 103–108, doi:10.1016/j.jnucmat.2011.12.003