| 摘要 |
PROBLEM TO BE SOLVED: To provide soft magnetic alloy powder which is improved in soft magnetic property without performing a complex thermal treatment pattern while suppressing the rise in the temperature of a sample in a step of a thermal treatment, and to provide a powder-compact magnetic core arranged by use of the soft magnetic alloy powder and a manufacturing method of the powder-compact magnetic core.SOLUTION: Soft magnetic alloy powder is expressed by the compositional formula, FeBSiPCCu, provided that a, b, c, x, y and z satisfy the conditions of 79≤a≤86 at%, 5≤b≤13 at%, 0≤c≤8 at%, 1≤x≤10 at%, 0≤y≤5 at%, 0.4≤z≤1.4 at%, and 0.06≤z/x≤1.20. Especially, the soft magnetic alloy powder is made up of grains each prepared to have a crystal phase part located in a center portion of the grain, and an amorphous phase part located in an outer peripheral portion. A powder-compact magnetic core is manufactured by use of the soft magnetic alloy powder. |
