Microstructure and Structural Defects of Bulk Amorphous Fe64Co10Y6B20 Alloy

2017 ◽  
Vol 68 (10) ◽  
pp. 2413-2415
Author(s):  
Katarzyna Bloch
Keyword(s):  
Amorphous Alloys ◽  
Structural Defects ◽  
High Magnetic Fields ◽  
Soft Magnetic Properties ◽  
X Ray Diffraction ◽  
Cast State ◽  
Soft Magnetic ◽  
X Ray ◽  
Bulk Amorphous Alloys ◽  
Copper Mould

This paper presents studies relating to the structure and soft magnetic properties of the following bulk amorphous alloys Fe64Co10Y6B20. Samples were prepared by injecting the molten alloy into a water-cooled copper mould in the form of rods. On the basis of the performed X-ray diffraction studies and M�ssbauer spectroscopy, it was found that investigated samples were amorphous in the as-cast state. The influence of structural defects on the magnetization process was investigated within high magnetic fields known as the area of the approach to ferromagnetic saturation.

scholarly journals Structure and Soft Magnetic Properties of the Amorphous Alloys: Fe61Co10Ti3-xY6+xB20 (x = 0, 1)

2016 ◽  
Vol 61 (1) ◽  
pp. 445-450
Author(s):  
K. Błoch
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Major Effect ◽  
Exothermic Peak ◽  
Soft Magnetic Properties ◽  
X Ray Diffraction ◽  
Cast State ◽  
Soft Magnetic ◽  
Two Peaks ◽  
Thermal Stability Of

This paper presents studies relating to the structure, soft magnetic properties and thermal stability of the following bulk amorphous alloys: Fe61Co10Ti3-xY6+xB20 (x = 0, 1). On the basis of the performed X-ray diffraction studies and Mössbauer spectroscopy, it was found that investigated samples were amorphous in the as-cast state. The DSC curve obtained for Fe61Co10Ti2Y7B20 alloy exhibited one exothermic peak, while for the Fe61Co10Ti3Y6B20 sample, two peaks were distinguishable. The change in the chemical structure of the investigated alloys has a major effect on their soft magnetic properties; especially on coercivity and saturation magnetization. On the basis of the magnetization curves analysis, the spin wave stiffness parameter Dsp were determined for the investigated alloys.

Nanocrystallization of Fe-Based Amorphous Alloys Fe73.5Cu1Nb3Si13.5B9 by Continuous CO2 Laser Overlapping Irradiation

2011 ◽  
Vol 287-290 ◽  
pp. 2351-2355 ◽  
Author(s):  
Guo Rui Zhang ◽  
Yong Bao ◽  
Qian Li Ma ◽  
Li Meng Yu ◽  
Ling Fei Ji ◽  
...  
Keyword(s):  
Amorphous Alloys ◽  
Proper Time ◽  
Amorphous State ◽  
Soft Magnetic Property ◽  
Soft Magnetic Properties ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
X Ray ◽  
Transmission Electron ◽  
Irradiation Power

Continuous CO2laser irradiation is exploited to realize nanocrystallization of Fe based amorphous alloys Fe73.5Cu1Nb3Si13.5B9by overlapping of the heated areas, and to get homogeneous ultrafine grains of about 10nm with a bcc α-Fe(Si) structure, which is the foundation of the excellent soft magnetic property. X-ray diffraction and transmission electron microscopy(TEM) are used for microstructure analysis and observation, and the results show that irradiation power of 71w~99w gives the heat shock to the transformation from the metastable amorphous state to crystallized state, and proper time of about 20~30 seconds is necessary for optimum microstructure and soft magnetic properties.

Influence of Alloying Additions on Enhancement of Soft Magnetic Properties Effect and Crystallization in FeXSiB (X=Cu, V, Co, Zr, Nb) Amorphous Alloys

2007 ◽  
Vol 130 ◽  
pp. 171-174 ◽  
Author(s):  
Z. Stokłosa ◽  
G. Badura ◽  
P. Kwapuliński ◽  
Józef Rasek ◽  
G. Haneczok ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Crystallization Process ◽  
Annealing Temperature ◽  
Magnetic Measurements ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
X Ray ◽  
Second Stage ◽  
Transmission Electron

The crystallization and optimization of magnetic properties effects in FeXSiB (X=Cu, V, Co, Zr, Nb) amorphous alloys were studied by applying X-ray diffraction methods, high resolution transmission electron microscopy (HRTEM), resistometric and magnetic measurements. The temperatures of the first and the second stage of crystallization, the 1h optimization annealing temperature and the Curie temperature were determined for different amorphous alloys. Activation energies of crystallization process were obtained by applying the Kissinger method. The influence of alloy additions on optimization effect and crystallization processes was carefully examined.

Effect of Neodymium on the Glass-Forming Ability and Magnetic Properties of Fe-Based Bulk Amorphous Alloys

2015 ◽  
Vol 1120-1121 ◽  
pp. 440-445
Author(s):  
Hua Man
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Glass Forming Ability ◽  
High Thermal Stability ◽  
Bulk Amorphous Alloy ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Crystallization Peak ◽  
Bulk Amorphous Alloys ◽  
Glass Forming

The glass forming ability and magnetic properties were investigated for adding neodymium to the Fe71-xNb4B25Ndx (x=0, 3, 5, 7,10) alloys prepared by copper suction casting. It was found that proper neodymium (x=5~10 at.%) could improve glass forming ability of Fe-Nb-B alloys effectively. Bulk amorphous Fe66Nd5B25Nb4 and Fe64Nd7B25Nb4 samples were obtained and presented high thermal stability and good soft magnetic properties. The value of activation energy of the first crystallization peak for the bulk amorphous alloy Fe64Nd7B25Nb4 is 683 kJ/mol.

Al Effect on the Structure of the Spray Formed Fe88Si12 (at%) Alloy

2008 ◽  
Vol 570 ◽  
pp. 150-154 ◽  
Author(s):  
F. Saporiti ◽  
A.H. Kasama ◽  
B. Arcondo ◽  
Walter José Botta Filho ◽  
Claudio Shyinti Kiminami ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Low Temperatures ◽  
Spray Forming ◽  
Order Reaction ◽  
Soft Magnetic Properties ◽  
Thin Sheets ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
Silicon Alloys ◽  
X Ray

Fe-Si alloys have excellent soft magnetic properties, specially around 12 at% Si. However, its industrial application is limited because of the lack of ductility, which causes cracking during rolling operations for the fabrication of thin sheets. The reason of the brittleness of the high silicon alloys is a disorder/order reaction at low temperatures. The aim of this work is to analyze the effect of the addition of Aluminum on the crystalline structure of Fe-Si alloys. Samples with a chemical composition of Fe88Si12 and Fe87Si12Al1 (at%) were prepared by Spray Forming. The structure was studied by means of X-ray diffraction and Mössbauer Spectroscopy. The presence of the DO3 and α- Fe phases were observed

(Fe,Co)–Zr–Nd–B bulk amorphous alloys with good soft magnetic properties

2004 ◽  
Vol 12 (10-11) ◽  
pp. 1139-1142 ◽  
Author(s):  
Fushan Li ◽  
Tao Zhang ◽  
Akihisa Inoue ◽  
Shaokang Guan ◽  
Ningfu Shen
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Bulk Amorphous Alloys

scholarly journals Microstructure and Soft Magnetic Properties of Fe-Zr-(Pt)-Nb-Cu-B Amorphous Alloys

2017 ◽  
Vol 62 (2) ◽  
pp. 707-710
Author(s):  
J. Gondro ◽  
K. Błoch ◽  
M. Nabiałek ◽  
S. Walters
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Amorphous Alloys ◽  
Mössbauer Spectrometry ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
X Ray ◽  
Low Field ◽  
Magnetizing Field ◽  
Microstructure And Magnetic Properties

AbstractThis paper presents the results of investigations into the microstructure and magnetic properties of Fe86Zr7Nb1Cu1B5, Fe82Zr7Nb2Cu1B8and Fe81Pt5Zr7Nb1Cu1B5alloys. The alloys were investigated in their as-quenched state, in the form of thin ribbons with approximate dimensions as follows: width 3 mm and thickness 20 μm.The investigations were performed utilizing Mössbauer spectrometry and X-ray diffractometry. Also, an evaluation of the low-field magnetic susceptibility and measurements of the magnetization versus temperature and magnetizing field were performed.

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