Influence of Quench Rate on the Surface Crystallization and the Magnetic Properties of Fe-Based Amorphous Alloy Ribbons with Al and Ti as Impurities

摘要

This study investigates the influence of quench rateduring casting on surface crystallization and the magneticproperties of alloys with Al and Ti as impurities. The resultsshowed that the surface crystallization of alloys containing theseimpurities was accelerated by a decrease in quench rate. Themorphology of the crystallites formed are quite different in shapebetween Al and Ti. Further-more it is found that the softmagnetic properties are governed by only the crystalline layerthickness in which the crystallites are dispersed, regardless ofspecies of impurities.