Production of Nanocrystalline (Fe, Co)-Si-B-P-Cu Alloy with Excellent Soft Magnetic Properties for Commercial Applications

Kana Takenaka; Albertus D. Setyawan; Yan Zhang; Parmanand Sharma; Nobuyuki Nishiyama; Akihiro Makino

doi:10.2320/matertrans.MBW201402

Kana Takenaka, Albertus D. Setyawan, Yan Zhang, Parmanand Sharma, Nobuyuki Nishiyama, Akihiro Makino

Author information

Keywords: soft magnetic material, nanocrystalline alloy, high saturation magnetic flux density, low core loss

JOURNAL FREE ACCESS

2015 Volume 56 Issue 3 Pages 372-376

DOI https://doi.org/10.2320/matertrans.MBW201402

Browse “Advance online publication” version

Details

Abstract

With the aim of applying to a magnetic core material, the effect of ribbon thickness on the magnetic properties of a (Fe, Co)-Si-B-P-Cu alloy ribbon was investigated. It is found that the Si addition in (Fe, Co)-Si-B-P-Cu nanocrystalline alloy increased the saturation magnetic flux density (B_s), but degraded the coercivity (H_c), suggesting that the Si addition should be suppressed to a little amount. It is also found that the replacement of Fe with Co is quite effective for obtaining better magnetic properties of Fe-Si-B-P-Cu alloy. Even for the thicker ribbons exceeding 30 µm in thickness, the nanocrystalline Fe_81.2Co₄Si_0.5B_9.5P₄Cu_0.8 alloy exhibited low H_c of 7 A/m and high B_s of 1.84 T. Such excellent magnetic properties were successfully reproduced in 50 mm wide ribbons. This regards that the nanocrystallized Co-containing alloy has high applicability to high-efficiency magnetic core material.

Corresponding author

Register with J-STAGE for free!