| 简介 |
PROBLEM TO BE SOLVED : To provide a metallic magnetic powder in which a primary particle of each metallic magnetic particle constituting the metallic magnetic powder is a powder without forming an aggregate, and a manufacturing method of the same.
SOLUTION : The method comprises the steps of : manufacturing a metallic magnetic powder constituted of metallic magnetic-particles, containing a metallic magnetic phase, with Fe, or Fe and Co as main components, rare earth elements (in which yttrium is also treated as the rare earth element), one kind or more non-magnetic components such as A1 and Si; removing the non-magnetic component from the metallic magnetic particle, by making a reducing agent act thereon, while making a complexing agent exist for forming a complex with the non-magnetic component in water; oxidizing the metallic magnetic particle with the non-magnetic component removed; substituting water adhered to the oxidized metallic magnetic particle, with an organic solvent; and coating the surface of the metallic magnetic particle with an organic matter different from the organic solvent, while maintaining a wet condition of the metallic magnetic particle, with the organic solvent adhered thereto.
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