Soft magnetic alloy and magnetic component

Abstract

Provided is a soft magnetic alloy comprising a composition formula (Fe (1−(α+β)) X1 α X2 β ) (1−(a+b+c+d+e+f)) M a B b P c Si d C e Zn f . X1 denotes at least one selected from Co and Ni; X2 denotes at least one selected from Cu, Mg, Al, Mn, Ag, Sn, Bi, O, N, S, and rare earth elements; M denotes at least one selected from Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W; 0.080≤b≤0.150, 0≤c≤0.060, 0≤d≤0.060, 0≤e≤0.030, 0.0030≤f≤0.080, 0.0030≤a+f≤0.080, b+c≥0.100, α≥0, β≥0, and 0≤α+β≤0.50 are satisfied; and the soft magnetic alloy has Fe-based nanocrystals with a bcc structure.

What is claimed is: 
     
         1 . A soft magnetic alloy comprising a composition formula (Fe (1−(α+β)) X1 α X2 β ) (1−(a++b+c+d+e+f)) M α B b P c Si d C e Zn f ,
 wherein X1 denotes at least one selected from the group consisting of Co and Ni;   X2 denotes at least one selected from the group consisting of Cu, Mg, Al, Mn, Ag, Sn, Bi, O, N, S, and rare earth elements;   M denotes at least one selected from the group consisting of Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W;   a, b, c, d, e, f, α and β satisfy the relationships of:
   0.080≤ b≤ 0.150,
 
   0≤ c≤ 0.060,
 
   0≤ d≤ 0.060,
 
   0≤ e≤ 0.030,
 
   0.0030≤ f≤ 0.080,
 
   0.0030≤α+β≤0.080,
 
     b+c≥ 0.100, 
   α≥0,
 
   β≥0, and
 
   0≤α+β≤0.50; and
 
   the soft magnetic alloy has Fe-based nanocrystals with a bcc structure.   
     
     
         2 . The soft magnetic alloy according to  claim 1 , satisfying the relationships of:
     c≤ 0.040,       d≤ 0.030,     0.010≤ f≤ 0.050, and
     0.010≤ a+f≤ 0.050.
   
     
     
         3 . The soft magnetic alloy according to  claim 1 , wherein an expansion value of a (110) plane spacing of the Fe-based nanocrystal with respect to a (110) plane spacing of pure iron is 0.002 angstroms or less. 
     
     
         4 . The soft magnetic alloy according to  claim 2 , wherein an expansion value of a (110) plane spacing of the Fe-based nanocrystal with respect to a (110) plane spacing of pure iron is 0.002 angstroms or less. 
     
     
         5 . The soft magnetic alloy according to  claim 1 , wherein an average grain size of the Fe-based nanocrystals is 5 nm or more and 30 nm or less. 
     
     
         6 . The soft magnetic alloy according to  claim 1  having a ribbon shape. 
     
     
         7 . The soft magnetic alloy according to  claim 1  having a powder shape. 
     
     
         8 . A magnetic component comprising the soft magnetic alloy according to  claim 1 .