Method for manufacturing components for magnetic heads of increa

Details Method for manufacturing components for magnetic heads of increa Method for manufacturing components for magnetic heads of increa

1980-05-23

1982-06-22

McCarthy, Helen M.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

29609, 75 05BA, 75 05C, 75206, 75212, 75214, 75224, 75225, 148126, 360126, 428900, 428928, B22F 100, B22F 102, C22C 1903, C22C 3302

Patent

active

043360661

ABSTRACT:
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.

REFERENCES:
patent: 3728111 (1973-04-01), Stromblad et al.
patent: 3814598 (1974-06-01), Gabriel
patent: 4029475 (1977-06-01), Hamai et al.
patent: 4029501 (1977-06-01), Moss
patent: 4209326 (1980-06-01), Klein

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