| 摘要 |
PROBLEM TO BE SOLVED: To provide a bonded magnet where characteristic like anticorrosion is improved and imperfect characteristic due to oxidizing deterioration or the like in a material powder is hardly generated, and a manufacturing method of the bonded magnet. SOLUTION: Treatment agent for magnetic material, which is composed of a metal alkoxide containing solution, is spread on a bonded magnet powder particle 10, and a coating film 15b is formed. The coating film 15b becomes a kind of organic inorganic hybrid coating film, where organic component originating in alkoxide is made complex with a metal oxide, and can impart satisfactory anticorrosion to the bonded magnet powder particle 10, even if the film is thin. By forming the coating film 15b on the bonded magnet powder particle 10, chemical stability of the powder is markedly improved, so that deterioration of magnetic characteristics, based on the oxidizing deterioration of the powder is hardly generated. |
