Invention Application
- Patent Title: METHOD OF SEALING AN ANODIZED METAL ARTICLE
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Application No.: US15469663Application Date: 2017-03-27
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Publication No.: US20180274121A1Publication Date: 2018-09-27
- Inventor: Zhongfen Ding , Robert R. Hebert , Weilong Zhang , Bart Antonie van Hassel , Mark R. Jaworowski , Michael A. Kryzman , Blair A. Smith , Georgios S. Zafiris , Promila Bhaatia , Mark A. Brege , Shaahin Amini , Vijay V. Pujar
- Applicant: UNITED TECHNOLOGIES CORPORATION
- Main IPC: C25D11/22
- IPC: C25D11/22 ; C25D11/26 ; C25D11/30 ; C25D9/12

Abstract:
A method of coating a metal article is disclosed that includes immersing a metal article having an exterior anodized layer in a bath containing a chemically active corrosion inhibitor, and applying a voltage to the article during the immersing, the voltage driving the chemically active corrosion inhibitor from the bath into the exterior anodized layer. An article is also disclosed that has a substrate comprising a metal, and a porous anodized layer formed on an exterior surface of the substrate that is infiltrated with a chemically active corrosion inhibitor, the anodized layer having an inward-facing region and an outward-facing region, the anodized layer having a greater concentration of chemically active corrosion inhibitors in the inward-facing region than in the outward-facing region.
Public/Granted literature
- US10801123B2 Method of sealing an anodized metal article Public/Granted day:2020-10-13
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