Limits...
Soft magnetic properties of nanocrystalline Fe73B7Si16Nb3Cu1 alloy after rapid heating under tensile stress.

Nosenko A, Mika T, Rudenko O, Yarmoshchuk Y, Nosenko V - Nanoscale Res Lett (2015)

Bottom Line: As a result, strong transverse magnetic anisotropy was induced in the ribbon.Tensile stress increase from 0 to 180 MPa was shown to result in the decrease of the initial magnetic permeability down to 400 and core loss at frequencies from 0.4 to 200 kHz.The magnetic properties of the latter cores are advantageous for manufacturing the reactors and linear chokes of switch-mode power supplies.

View Article: PubMed Central - PubMed

Affiliation: G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine, 36, Academician Vernadsky Boulevard, Kyiv, 03142 Ukraine.

ABSTRACT
Amorphous Fe73B7Si16Nb3Cu1 ribbon was crystallized rapidly by electric current heating under simultaneously applied tensile stress along the ribbon axis. As a result, strong transverse magnetic anisotropy was induced in the ribbon. Dynamic magnetic properties of the ribbons rapidly heated either under the tensile stress or without tensile stress were measured using toroidal cores. Optimal electric current heating regime that provides maximum improvement of the initial magnetic permeability and core loss was determined. Tensile stress increase from 0 to 180 MPa was shown to result in the decrease of the initial magnetic permeability down to 400 and core loss at frequencies from 0.4 to 200 kHz. Comparative analysis of magnetic properties of the cut core (with non-magnetic gap) and the cores heated under tensile stress was carried out. The magnetic properties of the latter cores are advantageous for manufacturing the reactors and linear chokes of switch-mode power supplies.

No MeSH data available.


Related in: MedlinePlus

Dependencies of core loss (a) and initial magnetic permeability (b) on frequency. (1) Core annealed in furnace (Ta = 550°C, ta = 90 min). (2) Core made of ribbon heated by electric current (jh = 42 A/mm2, th = 3.7 s) under tensile stress 100 MPa. (3) Cut core with non-magnetic gap 0.045 mm (Ta = 550°C, ta = 90 min).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4385284&req=5

Fig12: Dependencies of core loss (a) and initial magnetic permeability (b) on frequency. (1) Core annealed in furnace (Ta = 550°C, ta = 90 min). (2) Core made of ribbon heated by electric current (jh = 42 A/mm2, th = 3.7 s) under tensile stress 100 MPa. (3) Cut core with non-magnetic gap 0.045 mm (Ta = 550°C, ta = 90 min).

Mentions: The dependence of the core loss on the frequency f for the cut and new gapless cores is shown in Figure 12a. It is seen that at the frequencies above 1 kHz, the core made of the ribbon with transverse anisotropy (heated by current under tensile stress) show a significant advantage in loss as compared to cut core.Figure 12


Soft magnetic properties of nanocrystalline Fe73B7Si16Nb3Cu1 alloy after rapid heating under tensile stress.

Nosenko A, Mika T, Rudenko O, Yarmoshchuk Y, Nosenko V - Nanoscale Res Lett (2015)

Dependencies of core loss (a) and initial magnetic permeability (b) on frequency. (1) Core annealed in furnace (Ta = 550°C, ta = 90 min). (2) Core made of ribbon heated by electric current (jh = 42 A/mm2, th = 3.7 s) under tensile stress 100 MPa. (3) Cut core with non-magnetic gap 0.045 mm (Ta = 550°C, ta = 90 min).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385284&req=5

Fig12: Dependencies of core loss (a) and initial magnetic permeability (b) on frequency. (1) Core annealed in furnace (Ta = 550°C, ta = 90 min). (2) Core made of ribbon heated by electric current (jh = 42 A/mm2, th = 3.7 s) under tensile stress 100 MPa. (3) Cut core with non-magnetic gap 0.045 mm (Ta = 550°C, ta = 90 min).
Mentions: The dependence of the core loss on the frequency f for the cut and new gapless cores is shown in Figure 12a. It is seen that at the frequencies above 1 kHz, the core made of the ribbon with transverse anisotropy (heated by current under tensile stress) show a significant advantage in loss as compared to cut core.Figure 12

Bottom Line: As a result, strong transverse magnetic anisotropy was induced in the ribbon.Tensile stress increase from 0 to 180 MPa was shown to result in the decrease of the initial magnetic permeability down to 400 and core loss at frequencies from 0.4 to 200 kHz.The magnetic properties of the latter cores are advantageous for manufacturing the reactors and linear chokes of switch-mode power supplies.

View Article: PubMed Central - PubMed

Affiliation: G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine, 36, Academician Vernadsky Boulevard, Kyiv, 03142 Ukraine.

ABSTRACT
Amorphous Fe73B7Si16Nb3Cu1 ribbon was crystallized rapidly by electric current heating under simultaneously applied tensile stress along the ribbon axis. As a result, strong transverse magnetic anisotropy was induced in the ribbon. Dynamic magnetic properties of the ribbons rapidly heated either under the tensile stress or without tensile stress were measured using toroidal cores. Optimal electric current heating regime that provides maximum improvement of the initial magnetic permeability and core loss was determined. Tensile stress increase from 0 to 180 MPa was shown to result in the decrease of the initial magnetic permeability down to 400 and core loss at frequencies from 0.4 to 200 kHz. Comparative analysis of magnetic properties of the cut core (with non-magnetic gap) and the cores heated under tensile stress was carried out. The magnetic properties of the latter cores are advantageous for manufacturing the reactors and linear chokes of switch-mode power supplies.

No MeSH data available.


Related in: MedlinePlus