| 摘要 |
<p>[Problem] To provide a method for producing an Sr ferrite sintered magnet which has both excellent Br characteristics and excellent HcJ characteristics, while achieving high reliability. [Solution] The present invention is a method for producing an Sr ferrite sintered magnet, which comprises: a calcination step wherein a calcine containing Sr ferrite is obtained by firing a mixed powder that contains at least a powder of an iron compound and a powder of a strontium compound at 850-1450°C; a pulverization step wherein a calcine powder is obtained by pulverizing the calcine; a step wherein a silicate glass powder is added and mixed into the calcine powder; and a firing step wherein a sintered body containing the Sr ferrite is obtained by firing a molded body, which has been obtained by molding the mixed powder of the calcine powder and the silicate glass powder in a magnetic field, at 1,000-1,300°C. In this method for producing an Sr ferrite sintered magnet, the silicate glass has a softening point of 450-800°C.</p> |
