Enhanced glass forming ability and soft magnetic properties through an optimum Nb addition to a Fe–C–Si–B–P bulk metallic glass

The thermal stability, glass-forming ability, soft-magnetic properties and mechanical properties of Co46Fe19+xB22.5Si5.5Nb7–x (x=0–2) bulk metallic glasses were investigated. The 5.5 at% Nb addition was found to be effective in approaching alloy to a eutectic point, resulting in an increase in glass-forming ability. By copper mold casting, bulk metallic glass rods with diameters up to 5 mm were produced. Except for high glass-forming ability, the bulk metallic glasses also exhibit good soft-magnetic properties, i.e., low coercive force of 1.34–2.14 A/m, high effective permeability at 1 kHz of 2.26–3.06×104, and high fractures strength (σf) of 4010–4460 MPa. This Co-based bulk metallic glass system with high strengths and excellent soft-magnetic properties is promising for future applications as a new functional material.

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Effect of Nb addition on the glass-forming ability, mechanical and soft-magnetic properties in (Co0.942Fe0.058)72−xNbxB22.4Si5.6 bulk glassy alloys

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2010.03.044 ◽

2010 ◽

Vol 504 ◽

pp. S31-S33 ◽

Cited By ~ 21

Author(s):

Huaijun Sun ◽

Qikui Man ◽

Yaqiang Dong ◽

Baolong Shen ◽

Hisamichi Kimura ◽

...

Keyword(s):

Magnetic Properties ◽

Glass Forming Ability ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Glass Forming ◽

Glassy Alloys ◽

Nb Addition

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Effect of Nb Addition on the Glass-Forming Ability, Soft-Magnetic Properties and Mechanical Properties of CoFeNiBSiNb Bulk Glassy Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.745-746.815 ◽

2013 ◽

Vol 745-746 ◽

pp. 815-822

Author(s):

Ya Qiang Dong ◽

Qi Kui Man ◽

Bao Long Shen

Keyword(s):

Mechanical Properties ◽

Magnetic Properties ◽

Supercooled Liquid ◽

Glass Forming Ability ◽

Liquid Region ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Glass Forming ◽

Glassy Alloys ◽

Nb Addition

The effect of Nb addition on the glass-forming ability (GFA), soft-magnetic properties and mechanical properties of [(Co0.65Fe0.35)0.9Ni0.1]73-xB21.9Si5.1Nbx(x=36) alloy system were investigated. The results showed that by adjusting the content of Nb, the thermal stability of the supercooled liquid and the GFA increased effectively. With increasing the amount of Nb, the supercooled liquid region (ΔTx) increased from 45 to 65 K and the reduced glass transition temperature (Trg=Tg/Tl) was located in the range of 0.5840.644. As a result, the [(Co0.65Fe0.35)0.9Ni0.1]73-xB21.9Si5.1Nbx bulk glassy alloys (BGAs) with diameters up to 5.0 mm were produced by copper mold casting. In addition to the high GFA, the Co-based glassy alloys exhibited excellent soft-magnetic properties, i.e., saturation magnetization of 0.530.81 T, low coercive force of 0.511.75 A/m, and high effective permeability of (1.522.53)×104 at 1 kHz under a field of 1 A/m. Besides, the Co-based BGAs also exhibited super high fracture strength of 42704490 MPa and vickers hardness of 11271182.

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Composition dependence of the glass-forming ability and soft magnetic properties of Fe-rich Fe–Nb–B ternary alloys

International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde) ◽

10.3139/146.111853 ◽

2019 ◽

Vol 110 (12) ◽

pp. 1116-1122

Author(s):

Man Zhu ◽

Peng Tao ◽

Lijuan Yao ◽

Zengyun Jian ◽

Fang'e Chang

Keyword(s):

Magnetic Properties ◽

Composition Dependence ◽

Glass Forming Ability ◽

Ternary Alloys ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Glass Forming

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The Effect of Co Addition on Glassy Forming Ability and Soft Magnetic Properties of Fe-Si-B-P Bulk Metallic Glass

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.508.112 ◽

2012 ◽

Vol 508 ◽

pp. 112-116 ◽

Cited By ~ 3

Author(s):

Xue Li ◽

Yan Zhang ◽

Hidemi Kato ◽

Akihiro Makino ◽

Akihisa Inoue

Keyword(s):

Magnetic Properties ◽

Metallic Glass ◽

Bulk Metallic Glass ◽

Glassy Alloy ◽

High Strength ◽

Alloy System ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Co Addition ◽

Ferromagnetic Bulk

We Successfully Prepared the Rod Glassy Samples of (Fe1-xCox)76Si9B10P5 (x = 0~0.4) Bulk Metallic Glass (BMG) with the Diameters up to 3.0 mm by Substituting Fe for a Small Amount of Co Element. A Certain Amount of Co Substitution for Fe Contributes to the Increase of the Glass-Forming Ability (GFA) while Maintaining Good Mechanical Properties (the Fracture Strength up to 3700 MPa). This Co-Added Ferromagnetic Bulk Glassy Alloy System Also Exhibits a Higher Saturation Magnetization of 1.49 T and Lower Coercive Force (Hc, 1.2 A/m). The Fe-Based BMGs with Alloying a Small Amount of Co Element Demonstrate Excellent Combination of High GFA, Good Soft-Magnetic Properties as Well as High Strength.

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