Magnetic head having a chromium nitride protective film for use in a magnetic recording and/or reproducing apparatus and a method of manufacturing the same

Disclosed is a magnetic head and a method of manufacturing the magnetic head which is provided with a protective film (24) of chromium nitride on its sliding surface, the film thickness being set to have no adverse effect upon the electromagnetic conversion characteristics of the head and which has...

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Bibliographische Detailangaben
Hauptverfasser:	RYONAI, HIROSHI, NASU, SHOGO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PHYSICS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	Disclosed is a magnetic head and a method of manufacturing the magnetic head which is provided with a protective film (24) of chromium nitride on its sliding surface, the film thickness being set to have no adverse effect upon the electromagnetic conversion characteristics of the head and which has sufficient wear resistance not only against a magnetic tape having its sliding surface formed of iron oxide or other metallic magnetic substance, but also against a magnetic tape having its sliding surface formed of chrome oxide, which the chrome oxide substance has a strong abrasion effect upon the magnetic head. The protective film (24) has a compressive internal stress in a range of 10 to 10 dyn/cm , a Knoop hardness of not less than 1500 kgf/mm , a nitrogen composition ratio in a range of 20 to 60 atom %, and a film thickness in a range of 50 to 1000 ANGSTROM .