| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for enhancing adhesiveness of a rare earth system permanent magnet. SOLUTION: An organic resin is dispersed in an alkali silicate water solution to prepare a treatment liquid containing the organic resin of 0.1 wt% to 5 wt% and alkali silicate of 2 wt% to 30 wt%. After this treatment liquid is coated on a magnet surface, it is heated and dried. When a film, which has constituents consisting of the alkali silicate and the organic resin, and has the content of the organic resin of 0.1 wt% to 50 wt% with uniform dispersion, is formed on the magnet surface; a thickness of the film is set to 5μm or more, so that a plurality of cracks are produced in the film, to form an aggregate of film pieces of which surfaces are formed in an island shape by cutting apart by ultrafine grooves. COPYRIGHT: (C)2006,JPO&NCIPI
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