Development of radiation-protective coatings based on epoxy composites for materials of electronic equipment

The basics of the theory of electron energy loss when passing through a composite material are presented. This made it possible to explain the influence of the metal filler on the amount of such losses. Dependences of the electron concentration, specific conductivity, and Hall EMF on the induction of external magnetic field for the n-Si and n-Ge single crystals, irradiated by the fast electrons, coated with a layer of ED-20 epoxy resin, were obtained. The composite layer was without fillers and with iron and aluminum powders as fillers. The presence of such a coating layer increases the radiation resistance of n-Si and n-Ge single crystals. Silicon and germanium single crystals coated with epoxy composite with iron powder filler have the highest radiation resistance. Obtained dependences of the Hall EMF on the induction of magnetic field for the investigated n-Si and n-Ge samples are linear. Only the silicon and germanium single crystals coated with epoxy with iron powder filler exhibit slight deviation from linearity at magnetic fields below 0.3 T. Residual magnetization, which induced the additional EMF Hall, was detected for the germanium and silicon single crystals, coated with a layer of epoxy resin with the iron powder filler. The presence of residual magnetization of the iron powder filler and the corresponding induced additional Hall EMF can be of practical importance in the development of energy storage systems based on irradiated n-Ge and n-Si single crystals coated with a layer of epoxy resin with the iron powder filler.

The chapter for a wide range of specialists with the radiation physics of solids is designed. It will be useful also for graduate students and students of physical and physical-technical specialties.