公开(公告)号：WO2007030010A1

公开(公告)日：2007-03-15

申请号：PCT/NL2006/050202

申请日：2006-08-15

Applicant: NETHERLANDS INSTITUTE FOR METALS RESEARCH ,  LODHI, Zeeshan Farooq ,  DE WIT, Johannes Hendrik Wilhelmus ,  TERRYN, Herman Albert

Inventor： LODHI, Zeeshan Farooq ,  DE WIT, Johannes Hendrik Wilhelmus ,  TERRYN, Herman Albert

IPC: C25D3/56 ,  C23C18/50

CPC classification number: C25D3/60 ,  C23C18/50 ,  C25D3/565 ,  C25D5/12

Abstract: Corrosion protection of steel by using Zn-Co-Fe alloy coatings. It is proposed to use a Zn-Co-Fe coating having a relatively high Co content. According to the invention at least 10 and more particular 10-40 % by wt. Co is used in the Zn-Fe-Co coating. Fe is used in quantity of 1-5 % by wt. and the remaining material is Zn. It has been found that such a coating is much more effective than conventional coatings so that the thickness thereof can be reduced with about 90%. This more than fully compensates for the high cost of Co. It has been found that the difference in electrochemical potential of such coating and the substrate is relatively small. This slows down rapid dissolution of Zn from the coating.

Abstract translation: 使用Zn-Co-Fe合金涂层对钢的腐蚀保护。 提出使用具有较高Co含量的Zn-Co-Fe涂层。 根据本发明，至少10种，更特别是10-40％（重量） Co用于Zn-Fe-Co涂层。 Fe的用量为1-5重量％。 剩余的材料是Zn。 已经发现，这种涂层比常规涂层更有效，因此其厚度可以减少约90％。 这不仅完全补偿了公司的高成本。已经发现，这种涂层和基板的电化学势的差异相对较小。 这减慢了Zn从涂层中的快速溶解。