Abstract
Nanocrystalline FeCuNbSiB alloys obtained from the partial crystallization of amorphous alloys have attracted technological attention due to their excellent magnetic properties, but the relationship between corrosion resistance and magnetic properties is not well established. The influence of Nb as an alloying element and effect of partial crystallization on the corrosion resistance of Fe 73.5Si 13.5B 10Cu 1, Fe 73.5Si 13.5B 7Nb 3Cu 1 and Fe 73.5Si 13.5B 5Nb 5Cu 1 amorphous alloys were studied and the effect of corrosion on magnetization saturation flux density, B s, was investigated. The addition of niobium on amorphous alloys increases the corrosion resistance. The raise of Nb content from 3 to 5% increases the corrosion resistance also. A partial crystallization increases the corrosion resistance of the samples with Nb. However, in the samples without Nb, the partial crystallization diminishes the corrosion resistance. The values of B s depend on the alloy corrosion resistance.
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