公开(公告)号：EP2449149B1

公开(公告)日：2012-12-19

申请号：EP10728680.9

申请日：2010-07-05

申请人： Atotech Deutschland GmbH

发明人： HOFMANN, Udo ,  DONSBACH, Hermann ,  UNGER, Jörg ,  KRENZEL, Volker

IPC分类号： C23C22/17 ,  C23C22/83 ,  C23C18/12

CPC分类号： C23C22/17 ,  C23C22/83 ,  C23C2222/10

公开(公告)号：EP2449149A1

公开(公告)日：2012-05-09

申请号：EP10728680.9

申请日：2010-07-05

申请人： ATOTECH Deutschland GmbH

发明人： HOFMANN, Udo ,  DONSBACH, Hermann ,  UNGER, Jörg ,  KRENZEL, Volker

IPC分类号： C23C22/17 ,  C23C22/83 ,  C23C18/12

CPC分类号： C23C22/17 ,  C23C22/83 ,  C23C2222/10

摘要： The invention relates to a method for producing an anti-corrosive cover layer, a surface to be treated being brought into contact with an aqueous treatment solution containing chromium(III) ions and at least one phosphate compound and an organosol. The method improves the anti-corrosion protection of metal, in particular zinc-containing, surfaces and zinc-containing surfaces provided with conversion layers. This produces or improves the decorative and functional properties of the surfaces. In addition, it avoids the known problems arising with the use of chromium(VI)-containing compounds or multi-stage processes in which a chromium ion-containing passivation layer and a seal are applied consecutively.