| 摘要 |
PURPOSE:To provide a fine crystalline strip material for use as high permeability magnetic material having large tensile strength and flexibility and excellent magnetic properties by incorporating specific amount of Mo and Ni into Fe-Si-Al based Sendust alloy. CONSTITUTION:Molten material consisting of Si: 7.0-9.6%, Al: 5.5-7.5%, Mo: 0.3-3.0%, Ni: 0.3-4.0% and as required Ca: 0.5% or less, the remaining essentially being Fe is made to continuously contact the outer surface of a cooling body moving such as a rotating disk so that it is solidified by rapid cooling. This provides a thin strip material essentially consisting of fine crystalline, rapidly cooled coagulation structure and having tensile strength of 35kg/mm.<2> or more bending rupture strain of 8X10<-3> or more. This material has as high a permeability properties, resistivity, hardness and abrasion resistance as those of Sendust alloy and as such can be used for magnetic head core, and as magnetic cores for transformer and current converter. |
