Effects of alloying elements on thermal stability, glass-forming ability and soft magnetic properties of Fe-P-C-B metallic glasses

2015 ◽  
Author(s):  
W. Zhang ◽  
H. Miu ◽  
X. Jia ◽  
Y. Li ◽  
G. Xie
Keyword(s):  
Thermal Stability ◽  
Magnetic Properties ◽  
Metallic Glasses ◽  
Glass Forming Ability ◽  
Alloying Elements ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Glass Forming

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

2014 ◽  
Vol 783-786 ◽  
pp. 1895-1900 ◽  
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.

Co-Based Bulk Metallic Glasses with Good Soft-Magnetic Properties and High Strength

2017 ◽  
Vol 898 ◽  
pp. 703-708 ◽  
Author(s):  
Qi Kui Man ◽  
Ya Qiang Dong ◽  
Chun Tao Chang ◽  
Xin Min Wang ◽  
Run Wei Li
Keyword(s):  
Magnetic Properties ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Eutectic Point ◽  
Glass Forming Ability ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Glass Forming

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.

Influence of Copper Addition on Glass Forming Ability, Thermal Stability, Structure and Magnetic Properties of Fe-Co-Based BMGs

2013 ◽  
Vol 203-204 ◽  
pp. 296-301 ◽  
Author(s):  
Sabina Lesz ◽  
Rafał Babilas ◽  
Ryszard Nowosielski
Keyword(s):  
Thermal Stability ◽  
Magnetic Properties ◽  
Raw Materials ◽  
Glass Forming Ability ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Glass Forming ◽  
Copper Addition ◽  
Industry Applications ◽  
Stability Structure

The aim of the paper was investigation of the effect of Cu addition on glass forming ability (GFA), thermal stability, structure and magnetic properties of Fe-Co-based bulk metallic glasses (BMGs). The raw materials used in this experiment for the production of BMGs were pure Fe, Co, Cu and industrial Fe-B, Fe-Si, Fe-Nb ferroalloy. Investigations were carried out on BMGs in rods shaped with square section with side of 1.5mm. The structure of the investigated BMGs in rod form is amorphous. The addition of small amounts of Cu is effective in changing GFA and magnetic properties. The melting temperature - Tm remained almost constant for both investigated alloy. Two alloy compositions are at or very close to the eutectics, what according to ref. [1] should guarantee the best metallic glass-forming alloys. The investigated alloys have good soft magnetic properties. The successful synthesis of the Fe36.00Co36.00B19.00Si5Nb4 and Fe35.75Co35.75B18.90Si5Nb4Cu0.6 alloys with high GFA and good soft magnetic properties by using starting industrial alloys are encouraging for the future industry applications.

scholarly journals Glass Forming Ability, Thermal Stability, and Magnetic Properties of FeCoNiBSi Alloys with Different B Contents

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Haibo Sun ◽  
Yongfei Wang
Keyword(s):  
Thermal Stability ◽  
Magnetic Properties ◽  
Annealing Temperature ◽  
Amorphous Structure ◽  
Glass Forming Ability ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Glass Forming ◽  
Crystallization Onset ◽  
Thermal Stability Of

The dependence on the glass forming ability, magnetic property, and thermal stability of the (Fe0.39Co0.15Ni0.46)82−xB12+xSi6 (x = 0, 2, 4, and 6) alloys was investigated. The results show that the as-quenched alloy ribbons exhibit a completely amorphous structure with B content in the range of 12∼18 at.%. The initial crystallization onset temperature of the as-quenched ribbon increases with the increase of B content. When the B content is up to 14 at.%, the temperature interval between the two crystallization peaks will sharply reduce, which narrows the effective annealing range that is detrimental to improving the soft magnetic properties. Both of the Ms and Hc of the as-quenched ribbons increase first and then decrease with the increase of B content. Here, the maximum Ms of 0.90 T and low Hc of 10.2 A/m can be obtained at the B content of 14 at.%. Additionally, the (Fe0.39Co0.15Ni0.46)80B14Si6 alloy exhibits the minimum Hc of 5.9 A/m and Ms of 0.934 T at the proposed annealing temperature of 698 K for 10 min in the vacuum condition.

scholarly journals Effect of Ni addition on the glass-forming ability and soft-magnetic properties of FeNiBPNb metallic glasses

2011 ◽  
Vol 56 (36) ◽  
pp. 3932-3936 ◽  
Author(s):  
AnDing Wang ◽  
MingXiao Zhang ◽  
JianHua Zhang ◽  
He Men ◽  
BaoLong Shen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Metallic Glasses ◽  
Glass Forming Ability ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Glass Forming ◽  
Ni Addition
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