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 8 mm VCR and tapes. Fe-Ta-N and Fe-Al-N films which contain ceramics phase such as Ta-N show a high Vickers 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 rubbed by ME tapes. Corrosion properties were estimated by measuring the quantity of Fe dissolved into salt water after dipping a surface lapped thin film specimen. Nitrogen showed a remarkable effect in reducing the corrosion of Fe-N films. Cu was round to be an attractive additional element to increase the corrosion resistance without decreasing magnetic properties for Fe-Al-V-Nb-O-N films.<
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