| 简介 |
PROBLEM TO BE SOLVED : To provide an R-Fe-B permanent magnet which can be used in an environment where the temperature in the environment fluctuates very much and can very effectively contribute to the recent emphasized energy conservation, and to provide a method of manufacturing the magnet. SOLUTION : This R-Fe-B permanent magnet (where, R denotes at least one kind of rare-earth element, including Sc and Y) is covered with a metal coating film. The coating film is composed of a first plated metal coated film, having a thickness of 0.1-1.0 μm and substantially containing no pores, and a second plated metal coating film, including pores having major axes of 0.1-1.5 μm in length at their cross sections. |
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