发明申请
WO2018178390A1 METHOD FOR INCREASING THE CORROSION RESISTANCE OF A CHROME-PLATED SUBSTRATE
审中-公开
基本信息:
- 专利标题： METHOD FOR INCREASING THE CORROSION RESISTANCE OF A CHROME-PLATED SUBSTRATE
- 申请号：PCT/EP2018/058429 申请日：2018-04-03
- 公开(公告)号：WO2018178390A1 公开(公告)日：2018-10-04
- 发明人： DAL ZILIO, Diego , MARTIN, Andrea , DALBIN, Sandrine
- 申请人： COVENTYA S.P.A.
- 申请人地址： Via 1 Maggio 22060 Carugo (CO) IT
- 专利权人： COVENTYA S.P.A.
- 当前专利权人： COVENTYA S.P.A.
- 当前专利权人地址： Via 1 Maggio 22060 Carugo (CO) IT
- 代理机构： PFENNING, MEINIG & PARTNER MBB
- 优先权： EP17164327.3 20170331
- 主分类号： C25D3/06
- IPC分类号： C25D3/06 ; C25D5/18 ; C25D5/48 ; C25D9/04 ; C25D9/06 ; C25D11/38
摘要：
The present invention relates to a method for increasing the corrosion resistance of a chrome‐plated substrate wherein at least one part of a chrome‐plated surface of a chrome-plated substrate is dipped into an electrolyte comprising trivalent chromium ions, at least one conducting salt and at least one reducing agent, and afterwards, a trivalent chromium oxide film is formed on the at least one part of the chrome‐plated surface by applying a pulse reverse current between the chrome‐plated surface and a counter electrode electrically connected with the chrome‐plated surface through the electrolyte. Furthermore, the present invention relates to a chrome‐plated substrate obtainable by this method.