PLATING METHOD AND PLATING APPARATUS

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PROBLEM TO BE SOLVED : To provide a plating method that prevents the reprecipitation of a component having eluted into a plating liquid from a rare-earth sintered magnet of an article to be plated, and inhibits the degradation of the adhesiveness and reliability of a plated film, and to provide a plating apparatus.SOLUTION : When plating a R-T-B base sintered magnet, this plating method includes supplying an oxidative gas to the plating liquid L to be used, to oxidize and precipitate the component, for instance Nd and Fe, in the R-T-B base sintered magnet, which has eluted into the plating liquid L during plating. In the above step, it is preferable to supply the oxidative gas in a bubble form into the plating liquid L, so as to enhance the contact efficiency of the gas with the eluted component in the plating liquid L. The plating apparatus preferably has a filter 16 so as to collect a precipitated oxide of the eluted component.COPYRIGHT : (C)2006, JPO&NCIPI