BACKGROUND

1. Technical Field

The present invention relates to a soft magnetic powder and a method for producing a sintered body.

2. Related Art

An Fe-based soft magnetic alloy containing Co has a high saturation magnetic flux density, and therefore is used for, for example, a component for an electromagnetic actuator.

For example, JP-A-7-138712 (Patent Document 1) discloses a sintered Fe—Co-based alloy containing Co at 40 to 60 wt %, V at 1 to 5 wt %, and Si at 0.5 to 3 wt %, with the remainder being Fe and unavoidable impurities, wherein the total amount of V and Si is 6 wt % or less. In such a sintered Fe—Co-based alloy, soft magnetic properties such as a magnetic flux density and AC magnetic properties are simultaneously achieved.

However, the sintered Fe—Co-based alloy described in Patent Document 1 has a problem that the workability is low. That is, the sintered Fe—Co-based alloy produced by powder metallurgy generally has a shape close to a desired shape immediately after sintering, however, additional processing is sometimes needed. However, when the workability of the sintered Fe—Co-based alloy is low, it is sometimes difficult to bring the shape thereof closer to the desired shape by machining. In such a case, it is difficult to make the sintered Fe—Co-based alloy into products as various types of magnetic components.

SUMMARY

An advantage of some aspects of the invention is to solve the above-mentioned problem and the invention can be implemented as the following application example.

A soft magnetic powder according to this application example contains Fe in a proportion of 45.0 mass % or more and 52.0 mass % or less, Co in a proportion of 47.0 mass % or more and 52.0 mass % or less, V in a proportion of 0.030 mass % or more and less than 2.0 mass %, and Si in a proportion of 0.10 mass % or more, wherein the sum of the content of V and the content of Si is 2.5 mass % or less, and the soft magnetic powder has a specific surface area of 0.15 m2/g or more and 0.80 m2/g or less.

