PROPERTIES AND STRUCTURES OF FE-BASED METALLIC GLASSES

A fundamental study has been conducted on Fe78B13Si9 metallic thin rib bon in order to understand the changes in the properties and structure s of the glass as a function of Cr and Ni-Mo additions. The separate a dditions of Cr and Ni-Mo were successful in producing two new metallic thin glasses with the compositions Fe77Cr2B16Si5 and Fe74Ni4Mo3B17Si2 The study was focused on evaluating the physical and magnetic propert ies of these glasses with respect to the Cr and Ni-Mo additions. In ad dition, characterization of the internal and the surface structures of the glasses was conducted using transmission electron microscopy and scanning tunneling microscopy, respectively. A comparison between the internal and surface structures of the glasses was carried out on both amorphous and crystalline forms. As a result, a correlation between t he properties and the structures of the glasses was established.