| 简介 |
PROBLEM TO BE SOLVED : To provide a method of improving saline water resistance of a rare earth-based permanent magnet having a vapor-deposited Al film containing Mg on a surface. ŽSOLUTION : The method of improving the saline water resistance of the rare earth-based permanent magnet having the vapor-deposited Al film containing Mg on the surface is characterized in causing Mg in the Al film to exude to the film surface by making the surface of the Al film containing Mg form dew. For example, there is a method of making the surface of the Al film containing Mg form dew, that includes exposing the rare earth-based permanent magnet having the Al film containing Mg vapor-deposited on the surface, whose temperature on the film surface is 10 to 80°C at least to an environment of 15 to 85°C in dew point temperature (providing that the dew point temperature is higher than the temperature of the film surface). ŽCOPYRIGHT : (C)2011, JPO&INPIT Ž |
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