Recent developments in magnetic properties of grain-oriented silicon steel with high permeability

1 January 1975

proceedings article
Published by AIP Publishing in AIP Conference Proceedings

Vol. 24 (1) , 714-715
https://doi.org/10.1063/1.30250

Abstract

New developments of grain‐oriented silicon steel with high permeability using AlN as a grain growth inhibitor are reported. The most important factor in the improvement of core loss is crystal orientation, which is reflected directly in high permeability. The secondary grain size, purity, silicon content, the thickness and the tensile effect of surface coating are also important factors. Recent developments in processing have made it possible to get higher permeability material with smaller grain size. Furthermore, success in new melting technique has decreased oxide inclusions which are remarkably detrimental to magnetic properties. As a result of these developments, the following typical superior total loss values are obtained: 11 mil 0.57 W/lb (at 17kG, 60Hz) 12 mil 0.59 W/lb 14 mil 0.68 W/lb.

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