The Influence of Heat Treatment on the Properties of Co-Ni-Si-B Metallic Glass

Abstract

Isochronal annealing of Co66Ni12Si9B13 metallic glass leads to the formation of the α-Co and Co x B (x=2,3) phases at 673 K and 773 K, respectively. The abrupt decrease of the electrical and Hall resistivities and spontaneous Hall coefficient was observed due to formation of the crystalline phases. The phases were identified by X-ray diffraction and confirmed with the use of a quantum chemistry method.PACS : 64.70.Pf

Structural Relaxation of Ni-Si-B Amorphous Ribbon

“…They are unstable from a thermodynamic point of view and annealing them at elevated temperatures leads to structural relaxation manifesting itself in changes of various physical properties [1][2][3]. Atomic disorder and defects of different levels play the important role in magnetic properties of metallic glasses [4][5][6].…”

Creep-induced structural changes in Ni-Si-B amorphous alloy

“…From a thermodynamic point of view, they are unstable and annealing them at elevated temperatures leads to structural relaxation. Many papers dedicated to structural changes, which manifest themselves through changes in various physical properties, have been published up to now [1][2][3][4]. They show that, besides irreversible structural relaxation accompanied by annealing-out and quenching-in effects below the glass transition temperature, there are reversible structural changes brought about by thermal, magnetic, or mechanical effects.…”