Исследование термоэдс циркония Э110 при наводороживании

Abstract

In this work, the measurement of zirconium alloys with different hydrogen concentrations under dynamic temperature by the Thermal Electromotive Force Method are provided. The absolute thermal electromotive force (emf) of various materials is a parameter that must be taken into account. This article compared the absolute thermal emf of several different materials (Cu, Pt, Ag, Au). In the end, Au was chosen as the material for measuring the relative thermal emf. Due to the widespread use of zirconium alloys in the field of nuclear energy, we decided to study this material by the Thermal Electromotive Force Method. The different hydrogen concentrations in zirconium alloys were obtained by the Sieverts method. To make the hydrogenation more uniform, a zirconium alloy with a thickness of 0.5 mm was selected. When studying the processes of its dynamic heating and cooling, we observed the appearance of temperature hysteresis loops. It can be seen from the change in the temperature hysteresis loop at different hydrogen concentrations that this change also represents the properties of zirconium. A change in the relative thermal emf of zirconium alloys with different hydrogen concentrations indicated that the penetration of hydrogen atoms into zirconium alloys has a great influence on the migration of electrons in zirconium alloys. It can be concluded that the concentration of hydrogen in the zirconium alloy can be well characterized by the Thermal Electromotive Force Method.