The effect of plasma vacuum arc coating CrN, CrAl and Al2O3 on the process of saturation with deuterium alloy Zr + 1 % Nb

Abstract

In this work the hydrogen permeability of plasma not drop coatings CrN, CrAl and Al2O3, deposited  on alloy Zr + 1 % Nb. To measure the space-deuterium concentration distributions in the source of zirconium alloy and alloy coated after saturation of the gas phase at a temperature of 300–600 °C was used method of nuclear reactions. Saturation carried out under conditions of pressure deuterium  PD = (2–9)·10–3 Pa, the saturation time was 120 minutes; also used the method of ion implantation. It was found that the coating CrN, CrAl and Al2O3 serve protective barrier, protecting the interaction of zirconium isotope of hydrogen. Deuterium does not penetrate into the bulk samples coated, adsorption their surface areas.