| 摘要 |
PURPOSE:To provide magnetic metal power with excellent oxidation stability, by forming films made of one or more of a group consisting of SiO2O3, Ni3Fe, Cu and Ni on magnetic metal power particles, and by coating chelating agent on the particle surfaces. CONSTITUTION:Films made of one or more of a group consisting of SiO2, Al2O3, Ni3Fe, Cu and Ni are formed on magnetic metal power particles, and then are treated with chelating agent to coat it on the particle surfaces. Since the chelating agent is coupled well with metallic ions, it is chelate-coupled with metallic ions on the magnetic metal power particle surfaces exposed through openings of the films to be coated well on the particle surfaces. Accordingly, without reducing magnetizing quantity, the magnetic metal power which has better oxidation preventing effect and excellent oxidation stability can be provided. |
