Magnetic properties of compacted alloy Fe[sub 73. 5]Cu[sub 1]Nb[sub 3]Si[sub 13. 5]B[sub 9] in amorphous and nanocrystalline state

Conference · Mon Nov 01 04:00:00 EST 1993 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6895521

Heczko, O; Ruuskanen, P ^[1]

---

1. Technical Research Centre of Finland, Tampere (Finland). Metals Lab.

The uniaxial cold and hot pressing and shock wave compaction were used to produce ring cores from amorphous Fe[sub 73.5]Cu[sub 1]Nb[sub 3]Si[sub 13.5]B[sub 9] powder and ribbon. The microstructure of the cores was checked by X-ray diffraction. No crystallization was found during compaction. The magnetic hysteresis loops of the cores were measured In as-compacted state and after various heat treatment. Coercive force H[sub c] and permeability [mu][sub r] were determined as a function of annealing temperature between 400 and 650 C. Annealing to produce nanocrystalline state was found to improve magnetic properties considerably. The lowest H[sub c], about 10A/m and the highest [mu][sub r], about 10[sup 5] found for ribbon-compacted sample are close to those measured In the wound ribbon. The observed magnetic behavior of the samples compacted in different ways is explained on the basis of stress and creep-induced anisotropies.

• OSTI ID: 6895521
• Report Number(s): CONF-930416--
• Conference Information: Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 29:6Pt1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
BORON ALLOYS
COMPACTING
COPPER ALLOYS
DATA
EXPERIMENTAL DATA
FERROMAGNETIC MATERIALS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MATERIALS
MICROSTRUCTURE
NIOBIUM ALLOYS
NUMERICAL DATA
PHYSICAL PROPERTIES
SILICON ALLOYS