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The nature of the native oxides formed on thesurface layer of amorphous alloy Ni_(64)P_(20)Fe_(16)hasbeen studied by X-ray photoelectron spectroscopy(XPS)and Auger electron spectroscopy(AES)withdepth profiling by ion bombardment.There aregreat distinctions in compositions and chemicalstates between the surface layer and the bulk.Themain constituents Ni,P and Fe are lower in the sur-face layer,and they are mostly in oxidized states,whereas C,O and N are enriched in the surface lay-er.The thickness of surface oxide layer isapproximately 20 nm,this layer was assumed to beof great significance to various properties of amor-phous alloy Ni_(64)P_(20)Fe_(16),expecially to the chemicaland catalytic properties.Experiments proved thattransitional element Fe cannot improve oxidationresistance of the amorphous Ni-P system.
The nature of the native oxides formed on the layer of amorphous Ni_ (64) P_ (20) Fe_ (16) has been studied by X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES) with depth profiling by ion bombardment. aregreat distinctions in compositions and chemicalstates between the surface layer and the bulk. main constituents Ni, P and Fe are lower in the sur-face layer, and they are mostly in oxidized states, while C, O and N are enriched in the surface lay -er. The thickness of the surface oxide layer isapproximately 20 nm, this layer was assumed to be of great significance to various properties of amor-phous alloy Ni_ (64) P_ (20) Fe_ (16), expecially to the chemicaland catalytic properties. Experiments proved thattransitional element Fe can not improve oxidation resistance of the amorphous Ni-P system.