Patent number: 10535455
Abstract: A soft magnetic alloy including a main component having a compositional formula of (Fe(1?(?+?))X1?X2?)(1?(a+b+c))MaBbPc, and a sub component including at least C, S and Ti, wherein X1 is one or more selected from the group including Co and Ni, X2 is one or more selected from the group including Al, Mn, Ag, Zn, Sn, As, Sb, Bi, and rare earth elements, “M” is one or more selected from the group including Nb, Hf, Zr, Ta, Mo, W, and V, 0.020?a?0.14, 0.020?b?0.20, 0?c?0.040, ??0, ??0, and 0??+??0.50 are satisfied, when entire said soft magnetic alloy is 100 wt %, a content of said C is 0.001 to 0.050 wt %, a content of said S is 0.001 to 0.050 wt %, and a content of said Ti is 0.001 to 0.080 wt %, and when a value obtained by dividing the content of said C by the content of said S is C/S, then C/S satisfies 0.10?C/S?10.
Type:
Grant
Filed:
January 26, 2018
Date of Patent:
January 14, 2020
Assignee:
TDK CORPORATION
Inventors:
Akihiro Harada, Hiroyuki Matsumoto, Kenji Horino, Kazuhiro Yoshidome, Akito Hasegawa, Hajime Amano, Kensuke Ara, Seigo Tokoro, Shota Otsuka
Publication number: 20190385770
Abstract: A soft magnetic alloy includes a composition of (Fe(1-(?+?))X1?X2?)(1-(a+b+c+d+e+f+g))MaTibBcPdSieSfCg. X1 is one or more of Co and Ni. X2 is one or more of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements. M is one or more of Nb, Hf, Zr, Ta, Mo, W, and V. 0.020?a+b?0.140, 0.001?b?0.140, 0.020<c?0.200, 0.010?d?0.150, 0?e?0.060, a?0, f?0, g?0, a+b+c+d+e+f+g<1, ??0, ??0, and 0??+??0.50 are satisfied. The soft magnetic alloy has a nanohetero structure or a structure of Fe-based nanocrystalline.
Type:
Application
Filed:
June 4, 2019
Publication date:
December 19, 2019
Applicant:
TDK CORPORATION
Inventors:
Kazuhiro YOSHIDOME, Hiroyuki MATSUMOTO, Kenji HORINO, Hajime AMANO, Akito HASEGAWA
Publication number: 20190279799
Abstract: A soft magnetic alloy powder includes a plurality of soft magnetic alloy particles of a soft magnetic alloy represented by a composition formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))MaBbPcSidCe, wherein X represents Co and/or Ni; X2 represents at least one selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements; M represents at least one selected from the group consisting of Nb, Hf, Zr, Zr, Ta, Mo, W, and V; 0.020?a?0.14, 0.020<b?0.20, 0<c?0.15, 0?d?0.060, 0?e?0.040, ??0, ??0, and 0??+??0.50 are satisfied, and wherein the soft magnetic alloy has a nano-heterostructure with initial fine crystals present in an amorphous substance; and the surface of each of the soft magnetic alloy particles is covered with a coating portion including a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn.
Type:
Application
Filed:
March 8, 2019
Publication date:
September 12, 2019
Applicant:
TDK CORPORATION
Inventors:
Masakazu HOSONO, Kenji HORINO, Hiroyuki MATSUMOTO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Hajime AMANO, Isao NAKAHATA
Publication number: 20190279796
Abstract: Soft magnetic alloy powder includes plurality of soft magnetic alloy particles of soft magnetic alloy represented by composition formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c++e+f+g))MaBbPcSidCeSfTig, wherein X1 represents Co and/or Ni; X2 represents at least one selected from group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements; M represents at least one selected from group consisting of Nb, Hf, Zr, Ta, Mo, W, and V; 0.020?a?0.14, 0.020<b?0.20, 0<c?0.15, 0?d?0.060, 0?e?0.040, 0?f?0.010, 0?g?0.0010, ??0, ??0, and 0??+??0.50 are satisfied, wherein at least one of f and g is more than 0; and wherein soft magnetic alloy has a nano-heterostructure with initial fine crystals present in an amorphous substance; and surface of each of the soft magnetic alloy particles is covered with a coating portion including a compound of at least one element selected from group consisting of P, Si, Bi, and Zn.
Type:
Application
Filed:
March 8, 2019
Publication date:
September 12, 2019
Applicant:
TDK CORPORATION
Inventors:
Masakazu HOSONO, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Isao NAKAHATA, Akito HASEGAWA, Hajime AMANO