Abstract
This paper describes the methodology for conducting experiments to study hydrogen diffusion through metal membranes using a specially designed diffusion chamber of an automated gas reaction controller complex. This complex allows experiments to study hydrogen diffusion with the following parameters: the inlet hydrogen pressure is up to 50 atmospheres, and the temperature in the chamber is from 30 °C to 1000 °C. The size of the samples is limited to a diameter of 10 mm and a thickness of 100 μm. The method for calculating the diffusion coefficient based on the Fick equation is also described. When studying hydrogen diffusion through a sample of Zr–1Nb alloy with nickel film deposited at the temperature of 550 °C, it was noted that phase transformations can be observed on the diffusion curve.
Highlights
The study of the interaction of hydrogen with metals and alloys is widespread in the world [1,2,3,4].This interaction is considered in two directions
We describe the methodology for conducting experiments on the study of high-temperature diffusion using the gas reaction controller (GRC) complex
To solvethethe problems associated with theofstudy of hydrogen diffusion, following
Summary
The study of the interaction of hydrogen with metals and alloys is widespread in the world [1,2,3,4]. Due to diffusion processes, hydrogen begins to penetrate through the membrane, and after a certain period of time, exits the anode side of the membrane into the cathode compartment, where it is released at the cathode The advantages of this method are that it is simple and provides the ability to study the diffusion of hydrogen in aggressive environments. The principle of operation of an experimental setup for studying hydrogen permeability through a metal membrane by electrochemical penetration and mass spectrometric analysis [28,29] is as follows. An important distinguishing feature of it is the study of the interaction of metals with hydrogen in the gas phase This type of experimental complex enables the study of the effect of various processes of unilateral hydrogenation of a metal membrane on various protective coatings using a wide range of different saturation parameters, which helps the study of metal–hydrogen systems in even more detail. The implementation of this type of installation is more expensive
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