Microstructure Evolution upon Thermomagnetic Treatment of Soft Magnetic Alloys

2009 ◽  
Vol 152-153 ◽  
pp. 66-69 ◽  
Author(s):  
V.V. Gubernatorov ◽  
T.S. Sycheva ◽  
Irina I. Kositsyna
Keyword(s):  
Electron Microscopy ◽  
Magnetic Properties ◽  
Microstructure Evolution ◽  
Soft Magnetic Materials ◽  
Thermomagnetic Treatment ◽  
Soft Magnetic ◽  
Magnetic Alloys ◽  
Treatment Mode ◽  
Soft Magnetic Alloys ◽  
Microscopy Examination

A new concept is suggested that serves to explain the effects of thermomagnetic treatment. Its validity is proved via measurements of magnetic properties and electron microscopy examination of structure of soft magnetic materials after different treatments. This concept allows one to consciously choose the treatment mode aiming on improvement of magnetic properties of alloys.

EFFECT OF ANNEALING TEMPERATURE ON THE STRUCTURE AND AC MAGNETIC PROPERTIES OF Fe73Cu1Nb3.5-xVxSi13.5B9 (x = 1.0, 1.5, 2.0) NANOCRYSTALLINE SOFT MAGNETIC ALLOYS

2013 ◽  
Vol 27 (19) ◽  
pp. 1341013
Author(s):  
WEI LU ◽  
PING HUANG ◽  
YUXIN WANG ◽  
BIAO YAN
Keyword(s):  
Magnetic Properties ◽  
Strong Influence ◽  
Annealing Temperature ◽  
Iron Loss ◽  
Soft Magnetic ◽  
Magnetic Alloys ◽  
Annealing Temperatures ◽  
Grain Sizes ◽  
Soft Magnetic Alloys ◽  
Nanocrystalline Soft Magnetic Alloys

In this paper, Nb element was partially replaced by V element in Finemet-type Fe 73 Cu 1 Nb 3.5-x V x Si 13.5 B 9 (x = 1, 1.5, 2) alloys and the effect of annealing temperatures on the microstructure and AC magnetic properties of the samples are studied. The annealing temperatures affect the grain sizes of the bcc α- Fe phase greatly. When the annealing temperature is between 540–560°C, the samples have better AC magnetic properties than the samples annealed at other temperatures. The optimized annealing temperature of the studied samples is around 560°C. The coercivity and iron loss of the V2 sample is a little bit higher than that of V1 and V1.5 alloys while the amplitude permeability of V2 alloy is larger than that of V1 and V1.5, which indicate that the content of V element has strong influence on the magnetic properties of nanocrystalline soft magnetic alloys.

Magnetic Properties and Temperature Stability of Nanocrystalline Fe-Based Soft Magnetic Alloys

2010 ◽  
Vol 168-169 ◽  
pp. 384-387
Author(s):  
N.I. Noskova ◽  
V.V. Shulika ◽  
A.P. Potapov
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Temperature Stability ◽  
Magnetic Characteristics ◽  
Time Stability ◽  
Soft Magnetic ◽  
Magnetic Alloys ◽  
Ac Magnetic Field ◽  
Soft Magnetic Alloys ◽  
Temperature Time

The effect of the nanocrystallization conditions on the structure, magnetic characteristics and temperature stability of the Fe73.5Cu1Nb3Si13.5B9, Fe73.5Cu1Nb1.5Мo1.5Si13.5B9, Fe69Cu1Nb1.5Мo1.5Si13.5B9Co4.5, and (Fe0.6Co0.4)86Hf7B6Cu1 nanocrystalline soft magnetic alloys has been analyzed. The samples were nanocrystallized in the absence of a field, in a dc or ac magnetic field. It has been shown that the Fe73.5Cu1Nb1.5Мo1.5Si13.5B9 alloy has unique magnetic properties and a high temperature-time stability. It has been found that nanocrystallization of the (Fe0.6Co0.4)86Hf7B6Cu1 amorphous alloy in an ac magnetic field considerably improves its static and dynamic magnetic properties.

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