Microstructure evolution and soft magnetic properties of Fe72 xNbxAl5Ga2P11C6B4(x 0,2) metallic glasses

Bulk metallic glass (BMG) formations in Co- and Fe-based alloy systems are investigated by using our cluster line approach in combination with minor alloying principle. Basic ternary alloy compositions in Co–B–Si, Fe–B–Y, and Fe–B–Si systems are first determined by cluster lines defined by linking special binary clusters to third elements. Then the basic ternary alloys are further minor alloyed with 3 to 5 at.% Nb to improve glass-forming abilities (GFAs) and ϕ3 mm BMGs are formed in (Co8B3–Si)–Nb and (Fe8B3–Y)–Nb but not in (Fe8B3–Si)–Nb, TM8B3 (TM = Fe, Co) being the most compact binary cluster. The BMGs are expressed approximately with a unified simple composition formula: (TM8B3)1M1, M = (Si, Nb) or (Y, Nb). Finally, mutual Fe and Co substitutions further improve the GFAs as well as the soft magnetic properties, e.g., Is reaching 0.98 T and Hc < 6 A/m for the Co–Fe–B–Si–Nb BMGs. Using the (cluster)1(glue atom)1 model, a new ternary BMG Fe8B3Nb1 is obtained.

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Impact of Microstructure Upon Soft Magnetic Properties of Cobalt-Doped Metallic Glasses

IEEE Transactions on Magnetics ◽

10.1109/tmag.2013.2291877 ◽

2014 ◽

Vol 50 (4) ◽

pp. 1-4

Author(s):

Mariusz Hasiak ◽

Marcel Miglierini ◽

Miroslaw Lukiewski ◽

Jerzy Kaleta

Keyword(s):

Magnetic Properties ◽

Metallic Glasses ◽

Soft Magnetic Properties ◽

Soft Magnetic

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Soft magnetic properties of metallic glasses

Journal of Magnetism and Magnetic Materials ◽

10.1016/0304-8853(84)90142-2 ◽

1984 ◽

Vol 41 (1-3) ◽

pp. 79-85 ◽

Cited By ~ 23

Author(s):

Ryusuke Hasegawa

Keyword(s):

Magnetic Properties ◽

Metallic Glasses ◽

Soft Magnetic Properties ◽

Soft Magnetic

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Effect of B2O3 Fluxing on Glass-Forming Ability and Soft Magnetic Properties of Fe(-Co)-B-Si-Nb Bulk Metallic Glasses

Materials Science Forum ◽

10.4028/www.scientific.net/msf.783-786.1895 ◽

2014 ◽

Vol 783-786 ◽

pp. 1895-1900 ◽

Cited By ~ 1

Author(s):

Teruo Bitoh

Keyword(s):

Magnetic Properties ◽

Metallic Glasses ◽

Bulk Metallic Glasses ◽

Glass Forming Ability ◽

The Other ◽

Maximum Diameter ◽

Soft Magnetic Properties ◽

Copper Mold ◽

Soft Magnetic ◽

Glass Forming

The effect of B2O3 fluxing on the glass-forming ability (GFA), the structure and the soft magnetic properties of Fe (-Co)-B-Si-Nb bulk metallic glasses (BMGs) has been investigated. The large Fe-Co-B-Si-Nb BMG specimens with diameters up to 7.7 mm, which is approximately 1.5 times as large as that of the maximum diameter of the copper mold cast one (= 5 mm), were prepared by the fluxing and water quenching. Thus the GFA of the Fe-Co-B-Si-Nb BMG are improved by the fluxing. It was confirmed that the soft magnetic properties of the Fe-Co-B-Si-Nb BMG are also improved by the fluxing. On the other hand, it was found for the Co-free Fe-B-Si-Nb BMG that the B2O3 fluxing promotes the precipitation of the α-Fe (-Si) and Fe2B phases in the central region of the specimens; i.e., the GFA of the Fe-B-Si-Nb BMG is decreased by the fluxing. The Fe-B-Si-Nb BMG specimens show a flat hysteresis loop, indicating a good linear relationship between the magnetic induction and the applied magnetic field. These results of the Fe-B-Si-Nb BMG show that it is possible to develop a new soft magnetic material that exhibits constant permeability, which is necessary for producing inductors and choke coils.

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Effects of C Addition on Glass-Forming in FeCPSiBMoMn Bulk Metallic with Good Soft-Magnetic Properties

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.399-401.1012 ◽

2011 ◽

Vol 399-401 ◽

pp. 1012-1015

Author(s):

Jian Peng Wu ◽

Shan Dong Li ◽

Mei Mei Liu ◽

Xin Le Cai ◽

Yi Hu ◽

...

Keyword(s):

Magnetic Properties ◽

Metallic Glasses ◽

Low Cost ◽

Glassy Alloy ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Casting Method ◽

Glass Forming ◽

Copper Mold Casting ◽

Mold Casting

The effect of C substitution on the glass forming ability (GFA) and soft magnetic properties of Fe-based bulk metallic glasses (BMG) Fe79.4-xCxSi3.5B5.1P8.9Mo3Mn0.1(x = 4.2, 5.2, and 7.0) alloys have been investigated. It is revealed that fully glassy alloy rods with diameters up to 4 mm can be prepared by conventional copper mold casting method even using the low-cost industrial Fe-P master alloy. Properly substituting of Fe by C gives rise to an enhancement of GFA. Moreover, all the samples exhibit good soft magnetic properties with high saturation magnetization up to 1.16 T and low coercivity of 204 A/m.

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