US2020377982A1PendingUtilityA1

Soft magnetic alloy and magnetic component

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Assignee: TDK CORPPriority: Feb 21, 2018Filed: Feb 15, 2019Published: Dec 3, 2020
Est. expiryFeb 21, 2038(~11.6 yrs left)· nominal 20-yr term from priority
Inventors:Hajime AmanoAkihiro HaradaKazuhiro YoshidomeKenji HorinoHiroyuki MatsumotoKensuke AraAkito HasegawaSeigo Tokoro
B22F 1/142B22F 1/054H01F 1/15333H01F 1/15308H01F 1/14766H01F 1/14775B22F 9/082B22F 9/10B22F 2999/00B22F 2998/10C22C 33/0278B22F 2009/0844C22C 2202/02C22C 2200/04B22F 2009/0828C22C 45/02C21D 9/52B22F 2301/35H01F 1/153C22C 38/00B22F 1/0018B22F 2304/054
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Claims

Abstract

Provided is a soft magnetic alloy which has high saturation flux density, low coercivity, and a high specific resistance, and is represented by the compositional formula (Fe (1−(α+β)) X1 α X2 β ) (1−(a+b+c+d+e)) M a Si b Cu c X3 d B e , wherein X1 is at least one element selected from the group consisting of Co and Ni, X2 is at least one element selected from the group consisting of Ti, V, Mn, Ag, Zn, Al, Sn, As, Sb, Bi, and rare earth elements, X3 is at least one element selected from the group consisting of C and Ge, and M is at least one element selected from the group consisting of Zr, Nb, Hf, Ta, Mo, and W, and wherein 0.030≤a≤0.120, 0.020≤b≤0.175, 0≤c≤0.020, 0≤d≤0.100, 0≤e≤0.030, α≥0, β≥0, and 0≤α+β≤0.55).

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A soft magnetic alloy represented by a compositional formula (Fe (1−(α+β)) X1 α X2 β ) (1−(a+b+c+d+e)) M a Si b Cu c X3 d B e , in which
 X1 represents one or more selected from a group consisting of Co and   X2 represents one or more selected from a group consisting of Ti, V, Mn, Ag, Zn, Al, Sn, As, Sb, Bi, and rare earth elements,   X3 represents one or more selected from a group consisting of C and Ge,   M represents one or more selected from a group consisting of Zr, Nb, Hf, Ta, Mo, and W,   0.030≤a≤0.120,   0.020≤b≤0.175,   0≤c≤0.020,   0≤d≤0.100,   0≤e≤0.030,   α≥0,   β≥0, and   0≤α+β≤0.55 are satisfied.   
     
     
         2 . The soft magnetic alloy according to  claim 1 , wherein 0≤e≤0.010 is satisfied. 
     
     
         3 . The soft magnetic alloy according to  claim 1 , wherein 0≤e>0.001 is satisfied. 
     
     
         4 . The soft magnetic alloy according to  claim 1 , wherein 0.730≤1−(a+b+c+d+e)≤0.930 is satisfied. 
     
     
         5 . The soft magnetic alloy according to  claim 1 , wherein 0≤α{1−(a+b+c+d+e)}≤0.40 is satisfied. 
     
     
         6 . The soft magnetic alloy according to  claim 1 , wherein α=0 is satisfied. 
     
     
         7 . The soft magnetic alloy according to  claim 1 , wherein 0≤β{1−(a+b+c+d+e)}≤0.030 is satisfied. 
     
     
         8 . The soft magnetic alloy according to  claim 1 , wherein β=0 is satisfied. 
     
     
         9 . The soft magnetic alloy according to  claim 1 , wherein α=β=0 is satisfied. 
     
     
         10 . The soft magnetic alloy according to  claim 1  having a nano-hetero structure in which initial fine crystals are in an amorphous. 
     
     
         11 . The soft magnetic alloy according to  claim 10 , wherein an average grain size of the initial fine crystals is 0.3 to 10 nm. 
     
     
         12 . The soft magnetic alloy according to  claim 1  having a structure including Fe-based nanocrystals. 
     
     
         13 . The soft magnetic alloy according to  claim 12 , wherein an average grain size of the Fe-based nanocrystals is 5 to 30 nm. 
     
     
         14 . The soft magnetic alloy according to  claim 1  having a thin ribbon form. 
     
     
         15 . The soft magnetic alloy according to  claim 1  having a powder form. 
     
     
         16 . A magnetic component comprising the soft magnetic alloy according to  claim 1 .

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