发明授权
- 专利标题： Stainless steel having passive fluoride film formed thereon and equipment manufactured therefrom
- 专利标题（中）： 在其上形成钝态氟化物膜的不锈钢及由其制造的设备
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申请号： US09857117申请日： 2001-12-26
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公开(公告)号： US06699603B1公开(公告)日： 2004-03-02
- 发明人: Tadahiro Ohmi , Hirohisa Kikuyama , Masayuki Miyashita , Hiroto Izumi , Takanobu Kujime
- 申请人： Tadahiro Ohmi , Hirohisa Kikuyama , Masayuki Miyashita , Hiroto Izumi , Takanobu Kujime
- 主分类号： C23C806
- IPC分类号： C23C806
摘要：
A stainless steel with a passive state fluorinated film formed thereon, which is easy to construct and does not produce particles even when it is welded, and a device using the same. The stainless steel does not cause leakage even when said film is formed on a sealing surface of a joint and a valve seat surface. The stainless steel is characterized in that at least a part of the surface coated with a passive state fluorinated film not thicker than 190Å consisting of a metal fluoride as a main component.
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