Accession Number:

ADD015366

Title:

Corrosion Resistant Chromate Conversion Coatings for Heat-Treated Aluminum Alloys.

Descriptive Note:

Patent, Filed 19 Mar 91, patented 23 Jun 92,

Corporate Author:

COURTNEY AND CO PHILADELPHIA PA

Personal Author(s):

Report Date:

1992-06-23

Pagination or Media Count:

5.0

Abstract:

An improved method of coating 7000 series aluminum alloys, which are difficult to coat uniformly, with a coating resistant to long term corrosion in a salt spray environment is disclosed. By using a chromate solution of very low pH and applying that solution first as a cleaner, followed by brush application to form the final coating, an extended resistance to corrosion at least 2 to 3 times the usual duration is achieved readily.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE