The paper describes the corrosion measuring method of gadolinium in a liquid environment. The experimental stand for testing the standard potential (E°) of a magnetocaloric material as an indicator of a chemical reactivity was presented. Afterwards variations of E° value as a function of time for common metallic materials were measured. Based on obtained data a simple electrochemical series was made. Furthermore the influence of the environment temperature in a range from 15°C to 50°C on gadolinium corrosion was determined.
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