Glass Forming Ability, Thermal Stability, and Magnetic Properties of FeCoNiBSi Alloys with Different B Contents

Abstract

e dependence on the glass forming ability, magnetic property, and thermal stability of the (Fe 0.39 Co 0.15 Ni 0.46 ) 82−x B 12+x Si 6 (x � 0, 2, 4, and 6) alloys was investigated. e results show that the as-quenched alloy ribbons exhibit a completely amorphous structure with B content in the range of 12∼18 at.%. e initial crystallization onset temperature of the as-quenched ribbon increases with the increase of B content. When the B content is up to 14 at.%, the temperature interval between the two crystallization peaks will sharply reduce, which narrows the effective annealing range that is detrimental to improving the soft magnetic properties.

A Novel Viscosity-Temperature Model of Glass-Forming Liquids by Modifying the Eyring Viscosity Equation

“…Liquid viscosity is also one of the most important properties of chemical transportation, thus many viscosity models of molecular and polymer liquids have been developed in this area. Among them, glass-forming liquids belong to the Newtonian fluids, which are in category of many other similar organic or inorganic liquids [2,18,19] and have been extensively studied. The Arrhenius equation was firstly used for the viscosity calculation of fluids many years ago, i.e., ln η = A + B/T, where A and B are dependent of composition, with T being the temperature.…”