STRUCTURE, PHASE COMPOSITION AND PROPERTIES OF AMORPHOUS SOFT MAGNETIC Fe–Co–Si–B–P TAPES

The analysis of structural and phase states, mechanical and magnetic properties of amorphous FeCoBSi and FeCoBSiP alloys obtained by spinning is performed. The distribution of the elemental composition is traced and the alloy stratification by silicon and boron is noted. It is shown that the experimentally determined values of saturation induction (1.7–1.8 T) and coercive force (18–20 A/m) are practically independent of changes in the composition of the tapes in the studied range of element content. The values of ultimate strength (~162 MPa) and elongation before failure (~0.23%) indicate low plasticity of the studied tapes. However, the value of the elastic modulus was high at 81.5 MPa.