Formation processes of point defects in zirconium under the impact of neutrons in nuclear reactor conditions

A.A. Garibov — Fri, 09 Aug 2024 06:55:27 +0000

In thermal energetic nuclear reactors with power parameters of 400–1200 MW, the recoil energy given to the nuclei and the energies of the scattered neutrons due to the elastic scattering of thermal and fast neutrons in the nuclear reactor materials were determined. Based on recoil energies, the rates of generation of point defects that can be formed in the example of zirconium metal and the parameters of diffusion and recombination processes have been determined.

Vacuum devices and ion-assisted processes for forming functional coatings

I.R. Bekpulatov, B.D. Igamov, G.T. Imanova, A.I. Kamardin — Fri, 16 Aug 2024 00:00:00 +0000

In this study, processes of vacuum formation of the coating-substrate structure with the effect of ion purification and atomic transfer were studied. The processes of vacuum formation of the coating-substrate structure with the influence of ion treatment and atomic transfer in this system are of a complex nature. When irradiated with ion flows and simultaneous deposition of coatings, several processes occur: heating, sputtering, desorption, ion insertion, mixing, and chemical reactions. Estimates show that for effective modification of coatings, a deposition regime is required that provides an energy impact of the order of 100 eV per atom of the coating. To solve the problems of ion (ion-stimulated) deposition of metal coatings, in addition to vacuum-arc devices, relatively simple evaporator designs from a crucible-anode in a hollow cathode, an electron beam evaporator with an additional electrode, and several systems with plasma generation units that complement the devices can be used magnetron sputtering.

Caspian Journal of Energy

Formation processes of point defects in zirconium under the impact of neutrons in nuclear reactor conditions

Vacuum devices and ion-assisted processes for forming functional coatings