| 摘要 |
PURPOSE:To obtain a composition for a permanent magnet whose magnetic characteristic and mechanical strength are excellent by a method wherein the composition for the permanent magnet is composed of an interlayer compound magnetic powder, a synthetic resins as a binder and a silane coupling agent as its basic components. CONSTITUTION:A composition for a permanent magnetic is composed of the following as its main components: an intermetallic compound magnetic powder which is composed mainly of a rare earth metal and a transition metal; a synthetic resin as a binder; a silane coupling agent which is expressed by a general formula A. The general formula A is (R1-R2)4-n-Si-(R3)n (where R1 is a perfluoroalkyl radical with 1-20 carbon atoms, R2 is an alkyl radical with carbon atoms 1-3, R3 is an alkoxy radical and n is 1-3). Then, because the friction is reduced when an intermetallic compound magnetic substance is molded, it is possible to obtain a high magnetic characteristic. By this setup, the composition for the permanent magnet whose magnetic characteristic and mechanical strength are excellent can be obtained. |
