| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing iron magnet powder which contains rare earth elements and has superior weather-resistant properties and a high coercive force in important environmental conditions in practice, such as high humidity, high weather-resistant magnet powder obtained through the above manufacturing method, a bonded magnet resin composition containing the same, and to provide a bonded magnet. SOLUTION: In a method of manufacturing an iron magnet powder, that is coated with low-melting metal and contains rare earth elements, iron magnetic coarse powder of grain diameter 150 μm or smaller is mixed into a low-melting metal powder, the mixture is subjected to thermal treatment at temperatures of 200 to 600 deg.C, in an atmosphere of nitrogen gas and/or hydrogen gas and then ground into iron magnet powder containing rare earth elements. |
