Process for producing Fe-B-R based permanent magnet having a corrosion-resistant film,申请号EP19990116399-传众专利搜索

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发明名称	Process for producing Fe-B-R based permanent magnet having a corrosion-resistant film
摘要	<p>Producing a permanent magnet comprises placing the Fe-B-rare earth based magnet and metal pieces into a treating vessel for vibration and/or agitation. A metal film is formed on the magnet surface, with a sol solution applied to the metal film surface. The sol is produced by hydrolytic reaction, polymerizing metal compound and heat treating the resultant metal oxide film.</p>
申请公布号	EP0984464(A2)	申请公布日期	2000.03.08
申请号	EP19990116399	申请日期	1999.08.20
申请人	SUMITOMO SPECIAL METALS CO., LTD.	发明人	NISHIUCHI, TAKESHI;YOSHIMURA, KOHSHI;KIKUI, FUMIAKI
分类号	H01F41/02;(IPC1-7):H01F41/02;H01F1/057	主分类号	H01F41/02
代理机构		代理人
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