Influence of Na2SO4 on magnetic properties of (Fe1-XCoX)73.5Cu1Nb3Si13.5B9 (X=10, 40) alloys

Purpose: In this paper magnetic properties of new (Fe1-XCoX)73.5Cu1Nb3Si13.5B9 (X=10, 40) alloys have been presented. Moreover comparison of the changes of their magnetic properties due to influence of corrosion medium Na2SO4 has been done. Design/methodology/approach: The material was obtained by the method of rapid cooling from liquid phase. The measurements of magnetic properties were made on the Maxwell-Wien bridge, the fluxometr and the VSM – Vibrating Sample Magnetometer. Findings: The results allowed defining that are significant dependence between the magnetic properties and the corrosion. Research limitations/implications: Due to the high influence the corrosion on the magnetic properties of the material further research should be undertaken. Practical implications: The measurements allow giving information to the industry how decrease the magnetic properties of alloy after influence the corrosion medium. Originality/value: The Finemet is very attractive due to his excellent soft magnetic properties. The problem of the corrosion has been presented and her influence on the magnetic properties.