WEAR AND CORROSION-RESISTANCE OF FE-N BASED MICROGRAIN SOFT-MAGNETIC THIN-FILMS

Wear resistance of Fe-N based micrograin and other soft magnetic thin films was measured using commercial 8mm VCR and tapes. Fe-Ta-N and Fe- Al-N films which contain ceramics phase such as Ta-N show a high Vicke rs hardness, but their wear resistance was not the highest one. Fe-Ru- Ga-Si and Fe-Al-V-Nb-O-N films showed low wear loss when they were rub bed by ME tapes. Corrosion properties were estimated by measuring the quantity of Fe dissolved into salt water after dipping a surface lappe d thin film specimen. Nitrogen showed a remarkable effect in reducing the corrosion of Fe-N films. Cu was found to be an attractive addition al element to increase the corrosion resistance without decreasing mag netic properties for Fe-Al-V-Nb-O-N films.