Corrosion resistance of rapidly solidified Fe₃₆Co₃₆Zr₇Si₁₀B₁₁ and Fe_33.5Co_33.5Nb₇Si₁₅B₁₁ alloys

Abstract

Purpose

Amorphous and nanocrystalline FeCo‐based alloys present excellent soft magnetic properties and high Curie T_C temperatures. At ambient temperatures, these alloys are subject to electrochemical corrosion, which causes degradation of their magnetic properties. This paper seeks to characterize the microstructure and evaluate the corrosion resistance of Fe₃₆Co₃₆Zr₇Si₁₀B₁₁ and Fe_33.5Co_33.5Nb₇Si₁₅B₁₁ alloys.

Design/methodology/approach

These alloys are solidified at different cooling rates.

Findings

The corrosion resistance, which is found to depend on the microstructure, decreases as the cooling rate increases in the interval of 50‐150°C.

Originality/value

Builds on existing knowledge of the microstructure and corrosion resistance of Fe₃₆Co₃₆Zr₇Si₁₀B₁₁ and Fe_33.5Co_33.5Nb₇Si₁₅B₁₁ alloys.

Citation

Santos, F.S., May, J.E. and Kuri, S.E. (2006), "Corrosion resistance of rapidly solidified Fe₃₆Co₃₆Zr₇Si₁₀B₁₁ and Fe_33.5Co_33.5Nb₇Si₁₅B₁₁ alloys", Anti-Corrosion Methods and Materials, Vol. 53 No. 6, pp. 343-347. https://doi.org/10.1108/00035590610711679