| 简介 |
A spindle motor having a stator and a rotor includes : a stator core provided in the stator having salient-poles; a stator coil arranged between the salient-poles; a rotor; and a permanent magnet provided in the rotor. The stator core includes a stack of steel sheets whose salient-poles are formed by etching. The permanent magnet includes a ferromagnetic material consisting mainly of iron. The ferromagnetic material has formed in laminae on a surface thereof a layer of a fluorine compound containing an alkali element, an alkaline earth element or a rare earth element formed in laminae. Near an interface between the ferromagnetic material and the layer of the fluorine compound, iron exists in the layer of the fluorine compound such that a basic crystal structure of the fluorine compound is not changed and the fluorine compound containing the iron exists in the layer of the fluorine compound. |
客服热线：
手机版
二维码
