The study of deuterium permeability of film-forming inhibitors with the addition of fullerenes

摘要

In this work, the results of the hydrogen permeability study of a composite film-forming inhibitor are considered. Film-forming inhibitor consists of polyether urethane and synthesized fullerenes C60 and C70 in pure form. Two types of samples were used: uncoated and coated stainless steels with composite polyether urethane/fullerene varnish. The experimental work was based on the study of the dependence of the permeation reduction factor on the temperature in the reactor. For the coated sample, the minimum temperature was 623 K at which the deuterium flux was registered. Here we assume that at temperatures below 573 K the output pressure caused by the deuterium flow through the sample is less than 10(-10) Pa. The rate of steady-state flow through a coated sample is significantly lower than for an uncoated one at temperatures 573-673 K. The deuterium penetration rates through the two samples increase and reach similar stationary values starting at 723 K. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.