Invention Grant
- Patent Title: Method of electrolytic ceramic coating for metal, electrolysis solution for electrolytic ceramic coating for metal, and metallic material
- Patent Title (中): 金属电解陶瓷涂层方法,金属电解陶瓷涂层电解液和金属材料
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Application No.: US13138007Application Date: 2009-12-10
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Publication No.: US08877031B2Publication Date: 2014-11-04
- Inventor: Arata Suda , Tomoyoshi Konishi
- Applicant: Arata Suda , Tomoyoshi Konishi
- Applicant Address: JP Tokyo
- Assignee: Nihon Parkerizing Co., Ltd.
- Current Assignee: Nihon Parkerizing Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Flynn, Thiel, Boutell & Tanis, P.C.
- Priority: JP2008-333684 20081226
- International Application: PCT/JP2009/070657 WO 20091210
- International Announcement: WO2010/073916 WO 20100701
- Main IPC: C25D9/06
- IPC: C25D9/06 ; C25D11/02 ; C25D11/26 ; C25D11/30 ; C25D11/12 ; C25D11/04 ; C25D11/06

Abstract:
The electrolysis solution for electrolytic ceramic coating includes water, a water-soluble zirconium compound, a complexing agent, carbonate ion, and at least one member selected from the group consisting of an alkali metal ion, ammonium ion and an organic alkali. Te zirconium compound is included at a concentration (X) in terms of zirconium of 0.0001 to 1 mol/L, the complexing agent is included at a concentration (Y) of 0.0001 to 0.3 mol/L, the carbonate ion is included at a concentration (Z) of 0.0002 to 4 mol/L, a ratio of the concentration (Y) of the complexing agent to the concentration (X) in terms of zirconium (Y/X) is at least 0.01, a ratio of the concentration (Z) of the carbonate ion to the concentration (X) in terms of zirconium (Z/X) is at least 2.5, and the electrolysis solution has an electrical conductivity of 0.2 to 20 S/m.
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