-
公开(公告)号:US5154978A
公开(公告)日:1992-10-13
申请号:US497549
申请日:1990-03-22
申请人: Masatoshi Nakayama , Koichi Yajima , Kenji Nakaya , Kunihiro Ueda , Masanori Shibahara , Takatoshi Ooyama , Michihiro Nemoto
发明人: Masatoshi Nakayama , Koichi Yajima , Kenji Nakaya , Kunihiro Ueda , Masanori Shibahara , Takatoshi Ooyama , Michihiro Nemoto
CPC分类号: B05D7/54 , B05D1/60 , B05D1/62 , B05D3/144 , B05D3/148 , H01F41/026 , B05D2202/00 , Y10S428/90 , Y10T428/115 , Y10T428/1164 , Y10T428/31504 , Y10T428/31678
摘要: A highly corrosion-resistant rare-earth-iron magnet has a paraxylylene polymer film or a chloropara-xylylene polymer film formed thereon. The substrate magnet surface has a roughness Ra of no more than one micron. The magnet has a plasma polymer film formed beforehand or afterwards. The plasma polymer film has a protective film consists of only carbon and hydrogen, with a refractive index decreasing from the boundary surface between the film and the magnet toward the exposed surface. The protective coating has a thickness about three times the surface roughness of the substrate magnet.
摘要翻译: 高耐腐蚀性稀土铁磁体具有形成在其上的对二甲苯聚合物膜或氯代 - 亚二甲苯聚合物膜。 基板磁体表面的粗糙度Ra不大于1微米。 磁体具有预先形成的或之后形成的等离子体聚合物膜。 等离子体聚合物膜具有仅由碳和氢组成的保护膜,折射率从膜和磁体之间的边界面朝向暴露表面减小。 保护涂层的厚度约为基板磁体表面粗糙度的三倍。