Changes of the breaking strain from content of tritium and cycling in a palladium cathode membrane

摘要

In this work, it is examined the breaking strain in the function of the tritide phases, of depth and surfaces of silver alloyed or not alloyed palladium cathode membrane in a sequential process for penetration of tritium. Examining the parameters, a mapping model is given. Firstly, the introduction of tritium in the membrane by electrolytic cracking of tritiated water with cycling leads to high constant breaking strain in the adsorption surface and an increase of the breaking strain in the desorption surface. The tendency towards numerous cracks formation on the two surfaces is indisputable. Secondly, a progressive decrease of breaking strain in the depth of membrane, independent of cycling, signifies decelerating cracks and fractures in the volume of palladium. Before shutdowns of electrolysis and temperature, tritium purging process is recommended to avoid inversion of phase in entry and exit surfaces then collapse to increase the life of the palladium membrane. Porous ceramic support prevails on the life of palladium membrane.