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

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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.

Author(s):
Balin, Lionel J. ; Kostinko, Wash
Author Organization(s):
COURTNEY AND CO PHILADELPHIA PA
Descriptive Note:
Patent, Filed 19 Mar 91, patented 23 Jun 92,
Supplementary Note:
Supersedes PAT-APPL-671 592-91. This Government-owned invention available for U.S. licensing.
Pagination:
0005

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-671 592, PATENT-5 123 978
 Subject Terms
Joint Capability Areas:
JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_7_Protection; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means
Communities of Interest:
Weapons Technologies
Descriptor(s):
*PATENTS, *ALUMINUM ALLOYS, *CHROMATES, *RESISTANCE, *COATINGS, *HEAT TREATMENT, SPRAYS, SALTS, ALUMINUM, BRUSHES, CORROSION, ENVIRONMENTS, CONVERSION, ALLOYS
Field(s)/Group(s):
Inorganic Chemistry, Physical Chemistry, Properties of Metals and Alloys
Keyword(s):
PAT CL 148 247, 7000 SERIES ALLOYS
Report Date:
1992 Jun 23