| 简介 |
Disclosed is a magnetic alloy powder containing a rare earth element, which has a surface covered with a strong coating film and does not rust even in a corrosive environment, while exhibiting excellent corrosion resistance and resin adhesion. Also disclosed are : a method for producing the magnetic alloy powder containing a rare earth element; a resin composition for bonded magnets using the magnetic alloy powder and having excellent mechanical strength; a bonded magnet; and a compacted magnet. Specifically disclosed is an iron-based magnetic alloy powder containing a rare earth element, wherein an inorganic-organic composite coating film is uniformly formed on the surface of the magnetic powder, said coating film being composed of a complex metal phosphate that contains iron phosphate and a rare earth metal phosphate, and an organic compound that contains a polyphenol. Also specifically disclosed is a compacted magnet or bonded magnet which is characterized in that an inorganic-organic composite coating film is formed on the surface of a molded body which is obtained by molding an iron-based magnetic alloy powder containing a rare earth element, or molding a resin composition containing an iron-based magnetic alloy powder containing a rare earth element and a resin binder, said coating film being composed of a complex metal phosphate that contains iron phosphate and a rare earth metal phosphate, and an organic compound that contains a polyphenol. |
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