公开(公告)号：HU0301370A2

公开(公告)日：2005-03-29

申请号：HU0301370

申请日：2003-05-21

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PARKOS JOSEPH JJR ,  LOMASNEY GARY M ,  PUTNAM JOHN W ,  JAWOROWSKI MARK R

IPC: C25D11/06 ,  C23C22/34 ,  C23C22/78 ,  C25D11/08 ,  C25D11/18 ,  C25D11/24

Abstract: A metal substrate is anodized in a phosphoric acid anodizing solution. The anodized metal substrate is thereafter contacted with a hexavalent chromium free, trivalent chromium containing acid solution to coat the anodized metal substrate. The coated anodized metal substrate can be adhesively bonded to another such treated metal substrate to form a composite article. The resulting article exhibits excellent bonding and corrosion properties.