Soft Magnetic FeCo Alloys. Alloy Development, Processing, and Properties

ChemInform ◽  
2006 ◽  
Vol 37 (15) ◽  
Author(s):  
R. S. Sundar ◽  
S. C. Deevi
Keyword(s):  
Alloy Development ◽  
Soft Magnetic ◽  
Feco Alloys

High temperature soft magnetic materials: FeCo alloys and composites

2000 ◽  
Vol 36 (5) ◽  
pp. 3388-3393 ◽  
Author(s):  
R.H. Yu ◽  
S. Basu ◽  
L. Ren ◽  
Y. Zhang ◽  
A. Parvizi-Majidi ◽  
...  
Keyword(s):  
High Temperature ◽  
Magnetic Materials ◽  
Soft Magnetic Materials ◽  
Soft Magnetic ◽  
Feco Alloys

Effects of Annealing on Electrochemical Corrosion of Fe73.5Si13.5B9Nb3Cu1 Alloys

2011 ◽  
Vol 345 ◽  
pp. 83-86
Author(s):  
Ming Sheng Li ◽  
Jin Wei Tu ◽  
Shu Juan Zhang
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Corrosion Rate ◽  
Electrochemical Impedance ◽  
Amorphous State ◽  
Electrochemical Corrosion ◽  
Soft Magnetic Properties ◽  
Alloy Development ◽  
Soft Magnetic ◽  
Corrosion Characteristic

The electrochemical corrosion affects soft-magnetic properties and service life of amorphous or nanocrystalline Fe73.5Si13.5B9Nb3Cu1 alloys. Therefore it is important to characterize the corrosion characteristic of the alloys for their potential application to engineering fields and further alloy development. In this study, the corrosion behavior of nanocrystalline Fe73.5Si13.5B9Nb3Cu1 alloys prepared by crystallization from the amorphous state was studied and compared with that of their amorphous counterparts by linear polarization (PLZ) and electrochemical impedance spectroscopy (EIS) technique. In electrolyte of 0.01 M NaCl, annealing at 550 °C leads to the decreased corrosion rate, while crystallization at 650 °C gives rise to the increase of corrosion rate. In the blend solution of 0.1 M NaCl and 0.1 M NaOH, heat-treatment at 550 °C or 650 °C improves the corrosion resistance for the alloys.

Mechanical properties of soft magnetic FeCo alloys

2002 ◽  
Vol 329-331 ◽  
pp. 325-333 ◽  
Author(s):  
E.P George ◽  
A.N Gubbi ◽  
I Baker ◽  
L Robertson
Keyword(s):  
Mechanical Properties ◽  
Soft Magnetic ◽  
Feco Alloys

High Strength Soft Magnetic Composites

2001 ◽  
Vol 674 ◽  
Author(s):  
Ronghai Yu ◽  
Michelle M. Corte-Real ◽  
Adrian Gorea ◽  
Libo Ren ◽  
Azar Parvizi-Majidi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Volume Fraction ◽  
High Strength ◽  
Soft Magnetic Materials ◽  
High Coercivity ◽  
Soft Magnetic ◽  
Fiber Volume ◽  
Magnetic Composites ◽  
Feco Alloys

ABSTRACTThere has been an increasing demand for high temperature soft magnetic materials with mechanical properties better than those of existing commercial materials such as FeCo alloys. We have designed new magnetic composites by reinforcing FeCo alloys with high strength tungsten fibers. The composite materials were fabricated by electrodeposition. In general, the as-deposited composites have a relatively high coercivity Hc and low magnetic permeability μ, because of induced strain during fabrication. After appropriate thermal annealing, the composites have good soft magnetic properties, comparable to commercial bulk alloys. However, the saturation induction is reduced due to the non-magnetic inclusions. The composites also show significant enhancements in yield strength and tensile strength that increases linearly with fiber volume fraction as seen in other common composite materials. In addition, near zero creep is observed at 600 °C under a stress of 600 Mpa. The mechanical properties can be further improved by co-depositing soft magnetic material and Al2O3 onto the fibers. An approximately linear relationship was observed between the coercivity and volume fraction of Al2O3 particles. The square-root relationship was observed between the hardness and the Al2O3 concentration.

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