| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing metal magnetic powder by which a non-magnetic component on a surface layer part of the metal magnetic powder is easily leached out and eliminated without using any reducing agent, in leaching out and eliminating the non-magnetic component on the surface layer part of the metal magnetic powder into a solution for the purpose of reducing a particle size of the metal magnetic powder. <P>SOLUTION: The method for producing the metal magnetic powder includes: a metal magnetic powder producing step to bake raw material powder to which the non-magnetic component is added for the purpose of holding a shape and preventing sintering, and subsequently to reduce the baked powder so as to produce the metal magnetic powder including iron or iron and cobalt as main components, and including the non-magnetic component added for the purpose of holding the shape and preventing sintering; and a step to add a complexing agent for forming a complex with the non-magnetic component on the surface layer part of the metal magnetic powder, to add alkali thereto so as to adjust pH of the solution to 10-14, and to leach out and eliminate the non-magnetic component of the surface layer part of the metal magnetic powder into the solution. <P>COPYRIGHT: (C)2010,JPO&INPIT |
