| 摘要 |
PURPOSE:To acquire a sintering magnet of a complicated shape by forming a kneading matter by adding and kneading basis alloy powder of a specified average grain diameter whose main phase is R2Fe14B phase and a liquid phase compound powder of an average grain diameter which is larger than the basis alloy powder to binder and pure water and by injecting and molding it. CONSTITUTION:A basis alloy powder of an average grain diameter of 1 to 5mum whose main phase is R2Fe14B phase consisting of R (R is at least one kind of rare earth elements containing Y.) of 11 to 13 atomic %, B of 4 to 12 atomic % and Fe of the remainder, and a liquid phase compound powder of an average grain diameter of 8 to 40mum which partially contains R2(FeCo)14B phase, etc., in intermetallic compound phase of Co or Fe and R containing R3Co phase and consists of R of 13 to 45 atomic %, B of 12 atomic % or less and Co of the remainder (where a part or most of Co can be replaced with Fe) are mixed. Then, after binder is added to the raw powder and kneaded, injection molding is carried out. Thereby, an an-isotropic sintering magnet of a complicated shape with high magnetic characteristic can be made. |
