Method of manufacturing a glass-bonded magnetic head having diff

Details Method of manufacturing a glass-bonded magnetic head having diff Method of manufacturing a glass-bonded magnetic head having diff

1986-04-07

1987-05-19

Echols, Percy W.

Metal working

Method of mechanical manufacture

Electrical device making

G11B 5127

Patent

active

046656120

ABSTRACT:
A magnetic head (32) having a magnet core (30) of ferrite and a layer of a bonding material (28) consisting of glass in the gap-forming area of the magnet core (38). In order to ensure that on the one hand the ferrite be not attacked by the glass during the bonding process and that on the other hand the temperature adjustment during the bonding process is not too critical, double layer diffusion barriers are provided between the layer of bonding material (28) and the core parts (10) and (10'), respectively, which barriers are formed by a layer of silicon nitride (26) on the side of the bonding layer (28) and a layer of silicon oxide (24) on the side of the core parts (10) and (10'), respectively.

REFERENCES:
patent: 3886025 (1975-05-01), Riseman
patent: 4392167 (1983-07-01), Joormann

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