| 摘要 |
PURPOSE:To obtain a magnetic head having wear resistance and large permeability and saturated magnetic flux, by laminating a plurlaity of core members made of a magnetic alloy forming a hardened layer with ion nitriding on the surface. CONSTITUTION:Glow discharge is done for a ribbon-shaped amorphous magnetic substance material (quaternary alloy of Co, Fe, Si and B) under a low pressure N2 atmosphere by taking a magnetic substance as the cathode and a furnace body as the anode, to ionize N2 gas and collide against the magnetic substance surface. Nitrogen is injected on the surface to form a hardened layer 3b consisting of an N-injection layer 9a and a compound layer 9b on the surface of an amorphous layer 3a, several mu-several tens mu thick. Cores 1, 2 in which a plurality of core members 3 are punched out of the ribbon shaped member and the layers 3a, 3b are overlapped alternately, are mounted with coils 4, 5 and a magnetic head 8 is manufactured via gap spacers 6, 7. Thus a magnetic head with excellent wear resistance, and large rust resistance without the deterioration of magnetic characteristics can be obtained. |
