Corrosion properties of Co43Fe20Ta5.5B31.5 bulk glassy alloy

The corrosion properties of Co43Fe20Ta5.5B31.5 bull: glassy alloy with a diameter of 2 mm were investigated. The passive current density of the glassy alloy rod in 1N HCl and 1N H2SO4 solutions is in the order between 10(-1) and 10(1) A/m(2), respectively, indicating that except the ultrahigh strength and excellent soft-magnetic properties which have been reported before, this bulk glassy alloy also exhibits rather high corrosion resistance even without any corrosion-resistant elements. (C) 2007 Elsevier B.V. All rights reserved.