Accession Number:

ADA036010

Title:

Development of an Alkaline-Inhibited Epoxy Primer for Magnesium Alloys

Descriptive Note:

Final rept

Corporate Author:

NAVAL AIR DEVELOPMENT CENTER WARMINSTERPA AIR VEHICLE TECHNOLOGY DEPT

Personal Author(s):

Report Date:

1976-12-09

Pagination or Media Count:

24.0

Abstract:

Current primer coatings, using metallic chromates as the sole corrosion inhibitors, have not provided adequate protection for magnesium alloys on major aircraft components. However, it has been found that such metals can be protected by an epoxy formulation similar to specification MIL-P-23377 if a specific ratio of magnesium oxide to strontium chromate is substituted for the existing inhibitive filler. Salt-spray tests, with and without sulfur dioxide additions, have been used to demonstrate the effectiveness of this material on wrought and cast magnesium alloys. In addition, other laboratory tests have verified that this coating is capable of meeting the performance requirements of current tactical aircraft. Author

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE