مرکز منطقه ای اطلاع رساني علوم و فناوري - Design and preparation of new Fe-based bulk amorphous alloys toroids

DocumentCode :

789940

Title :

Design and preparation of new Fe-based bulk amorphous alloys toroids

Author :

Chiriac, Horia ; Lupu, Nicoleta ; Tibu, Mihai

Author_Institution :

Nat. Inst. of R&D for Tech. Phys., Iasi, Romania

Volume :

Issue :

fYear :

2003

Firstpage :

3040

Lastpage :

3042

Abstract :

We investigate dc and ac magnetic properties of Fe₅₆Co₇Ni₇Zr₆M_1.5Nb_2.5B₂₀ (M = Zr, Ti, Ta, Mo) amorphous alloys toroids prepared by mold casting. Electrical resistivities of 180-230 × 10^-8 Ω·m, coercive fields up to 10 A/m, dc-magnetic permeabilities of about 1 × 10⁵ and ac-magnetic permeabilities up to 3 × 10⁴, saturation magnetizations of 0.9-1.2 T, and Curie temperatures between 550 and 600 K are measured in the as-cast state. We discuss the influence of the preparation conditions, composition, frequency (5 Hz-10 MHz), and treatments on the electrical and magnetic characteristics and present the advantages of using bulk amorphous alloys with soft magnetic properties in new physical and engineering applications.

Keywords :

Curie temperature; amorphous magnetic materials; boron alloys; casting; cobalt alloys; coercive force; electrical resistivity; ferromagnetic materials; iron alloys; magnetic hysteresis; magnetic permeability; magnetisation; metallic glasses; molybdenum alloys; nickel alloys; niobium alloys; soft magnetic materials; tantalum alloys; thermomagnetic treatment; titanium alloys; zirconium alloys; 1.8E-6 to 2.3E-6 ohmm; 5 Hz to 10 MHz; 550 to 600 K; Curie temperatures; Fe-based bulk amorphous alloy toroids; Fe₅₆Co₇Ni₇Zr₆M_1.5Nb_2.5B₂₀; Fe₅₆Co₇Ni₇Zr₆Mo_1.5Nb_2.5B₂₀; Fe₅₆Co₇Ni₇Zr₆Ta_1.5Nb_2.5B₂₀; Fe₅₆Co₇Ni₇Zr₆Ti_1.5Nb_2.5B₂₀; Fe₅₆Co₇Ni₇Zr_7.5Nb_2.5B₂₀; ac magnetic permeabilities; ac magnetic properties; coercive fields; dc magnetic permeabilities; dc magnetic properties; electrical resistivities; mold casting; preparation conditions; saturation magnetizations; soft magnetic properties; Amorphous materials; Cobalt alloys; Iron alloys; Magnetic properties; Nickel alloys; Niobium alloys; Permeability; Saturation magnetization; Titanium alloys; Zirconium;

fLanguage :

English

Journal_Title :

Magnetics, IEEE Transactions on

Publisher :

ieee

ISSN :

0018-9464

Type :

jour

DOI :

10.1109/TMAG.2003.815883

Filename :

1233298

Link To Document :

https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=789940