| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rare earth base permanent magnet having an improved adhesiveness. <P>SOLUTION: A rare earth base permanent magnet has a laminated plated coating. The plated coating is an SnCu alloy plated coating whose top surface layer has a thickness of 0.1 μm or more to 3 μm or less. The SnCu alloy plated coating is composed of 35 mass% or more to 55 mass% or less of Sn, and substantial remains of Cu. A junction structure created using the rare earth base permanent magnet has an excellent initial adhesive strength in combination with silicon base adhesives, and retains the adhesive strength after moisture resistance test. <P>COPYRIGHT: (C)2008,JPO&INPIT |
