Influence of Cr addition on the corrosion resistance and magnetic properties of amorphous Fe73.5Si13.5B9Nb3Cu1 in simulated industrial environments

The influence of Cr concentration on the corrosion resistance of Fe73.5Si13.5B9Nb3Cu1 amorphous alloy in simulated industrial environments contaminated with SO2 has been studied. The corrosion kinetics have been analysed using DC electrochemical techniques. Moreover, gravimetric tests were conducted to establish the reliability of the data obtained electrochemically. Every test was determined with the same material in different states: amorphous, nanocrystalline and crystalline. Furthermore, the study has also focused on the modification of the magnetic properties (coercive field and saturation magnetisation) in the material as a result of Cr addition and the exposure to an aggressive medium. These properties mainly depend on the Cr concentration, as well as on the material state (amorphous, crystalline, or nanocrystalline).