Method for manufacturing components for magnetic heads of increased abrasion resistance

摘要

In manufacturing of lamina used for components for magnetic heads such as head cores and shield casings, powder metallurgy is applied to powder material of a permalloy alloy composition in combination with later-staged rolling. Addition of at least one easily oxidizable element is preferably combined with formation of the material powder by means of atomization, more preferably followed by annealing within a reducing atmosphere. Measured formation of oxidized shells on powder particles assists uniform and smooth dispersion of smashed shell flakes into the lamina, thereby greatly raising abrasion resistance of the product without lowering the magnetic properties.