| 摘要 |
PURPOSE:To obtain the title compound wherein fluidity at the time of formation is excellent, and multipole anisotropy or radial anisotropy is easy to be imparted in a comparatively weak magnetic field by using material is R-TM-B base alloy powder, and is composed of surface-treated magnetic powder with a specified grain diameter and resin, and whose melt.index value is in a specified range. CONSTITUTION:The title compound is a material which is R-TM-B base alloy powder and is composed of surface-treated magnetic powder with an average grain diameter of 1-1000mum and resin, and whose melt.index value is 10-300g/10min. Where R is one or more kinds of rare earth elements containing Y. TM is Fe or one wherein a part of Fe is replaced by Co, and B is boron. For example, the above alloy powder composition is as follows; the rare earth elements R are 11-18at%, boron B is 4-11at%, transition metal TM is composed of Co less than or equal to 30at%, and the residual part is practically Fe. The surface treatment of magnetic powder is desirable to be a compound treatment using titanate system coupling agent after a processing using silane system coupling agent. Because of excellency in forming properties and the like, polyamide resin, in particular, nylon 6 and nylon 12 are preferable. |
