Bulk Amorphous Soft Magnetic Iron Based Alloy with Mechanical Strength and Corrosion Resistance

2008 ◽  
Vol 399 ◽  
pp. 37-42
Author(s):  
Viorel Aurel Şerban ◽  
Cosmin Codrean ◽  
Ion Dragoş Uţu
Keyword(s):  
Corrosion Resistance ◽  
Mechanical Strength ◽  
Amorphous Alloys ◽  
Point Of View ◽  
Soft Magnetic ◽  
Bulk Amorphous Alloys ◽  
Negative Effect ◽  
Iron Based

The paper makes a review about the opportunity, forming conditions and obtaining methods of bulk amorphous alloys and their properties. There are also presented the experiments regarding the obtaining and characterization from mechanical and chemical point of view of some alloys from Fe70 (Cr5-x Nix)5 Ga4 P13 Si5 C3 ( x = 0,1,2,4) family, pointing out the negative effect of the nickel on their resistance characteristics.

scholarly journals Correction to: Influence of Alloying on the Corrosion Resistance of Bulk Amorphous Alloys Based on Iron

2018 ◽  
Vol 54 (1) ◽  
pp. 138-138
Author(s):  
O. M. Hertsyk ◽  
M. O. Kovbuz ◽  
L. M. Boichyshyn ◽  
T. G. Pereverzeva ◽  
O. V. Reshetnyak
Keyword(s):  
Corrosion Resistance ◽  
Amorphous Alloys ◽  
Bulk Amorphous Alloys

High Dynamic Mechanical Strength of Zirconium-Based Bulk Amorphous Alloys

1998 ◽  
Vol 554 ◽  
Author(s):  
Tao Zhang ◽  
Akihisa Inoue
Keyword(s):  
Residual Stress ◽  
Mechanical Strength ◽  
Amorphous Alloys ◽  
Compressive Residual Stress ◽  
Bending Strength ◽  
Tensile Fracture ◽  
Uniaxial Tensile ◽  
Cast Sample ◽  
Bulk Amorphous Alloys ◽  
Squeeze Cast

AbstractA bulk amorphous Zr55Al10Ni5Cu30 alloy prepared by squeeze casting was found to exhibit high mechanical strength values, i.e., uniaxial tensile fracture strength (σt) of 1850 MPa, three-point bending strength (σb) of 3200 MPa, bending fatigue strength (σf) of 1100 MPa, Charpy impact fracture energy (Ef) of 135 kJ/m2 and fracture toughness of 68 MPa√m. The σb, σf and Ef are about two times higher than those for the corresponding bulk amorphous alloys prepared by unidirectional solidification and powder consolidation techniques, though the σt of the squeeze cast sample is higher by about 15 % than those for the other samples. The remarkable increases in the σb, σf and EF are presumably due to the introduction of high compressive residual stress of about 1240 MPa in the outer surface region only for the squeeze cast sample. The finding of the effectiveness of the compressive residual stress on the increase in the mechanical strength under the bending stress mode is important and expected to be widely used as a new strengthening mechanism for bulk amorphous alloys, as is the case for reinforced oxide glasses subjected to strengthening treatment.

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.

(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

Effect of C addition on the corrosion properties of amorphous Fe-based amorphous alloys

2019 ◽  
Vol 33 (01n03) ◽  
pp. 1940006
Author(s):  
Xiang Li ◽  
Xu Zhao ◽  
Fang Liu ◽  
Lu Yu ◽  
Yuxin Wang
Keyword(s):  
Corrosion Resistance ◽  
Amorphous Alloys ◽  
Melt Spinning ◽  
Electrochemical Impedance ◽  
Target Material ◽  
Soft Magnetic ◽  
Corrosion Properties ◽  
Amorphous Ribbons ◽  
Soft Magnetic Alloys ◽  
Arc Melting

Fe-based amorphous alloys are important materials with a high potential for commercialization by evaluating their corrosion performances. In this work, amorphous Fe[Formula: see text]Cu1Nb3Si[Formula: see text]B9 alloy was chosen as a target material to investigate the effects of the addition of C on the corrosion properties by an electrochemical method. Alloy ingots Fe[Formula: see text]Cu1Nb3Si[Formula: see text]C[Formula: see text]B[Formula: see text] (x = 0, 1, 2, 3 at.%) were prepared using an arc melting system, under argon atmosphere. Planar flow melt spinning of the alloys was carried out to obtain amorphous ribbons of the width [Formula: see text][Formula: see text]5 mm and the thickness about 30 [Formula: see text]m. Effects of the addition of C into Fe[Formula: see text]Cu1Nb3Si[Formula: see text]B9 amorphous soft magnetic alloys were investigated in acidic solutions. Studies of potentiodynamic polarization and electrochemical impedance revealed the passivation ability and corrosion resistance of the amorphous ribbons with C in the 0.1M H2SO4 media at room-temperature. The amorphous ribbons showed excellent corrosion resistance with formation of a stable passive film. It can be obviously observed that the addition of C significantly improves the corrosion resistance.

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