Multifunctional corrosion inhibitors for protective coatings
Book
·
OSTI ID:83096
- Naval Air Warfare Center, Warminster, PA (United States). Aircraft Division
A chemical system called DNBM (a mixture of quaternary ammonium salts of dichromate, nitrate, borate and molybdate) was developed to inhibit corrosion fatigue and stress corrosion cracking, as well as general corrosion, in high strength steels and Aluminum alloys. In this study, DNBM in neat Compound form was examined as a possible substitute inhibitor in standard epoxy primer coatings. The DNBM was added into a very basic epoxy coating consisting of only one relatively inert pigment and also into a clear, resin-only system in order to determine it`s isolated performance. The tests were run on 2024-T3 chromate conversion coated aluminum, bare steel, and zinc phosphated steel. Electrochemical Impedance Spectroscopy measurements were made along with salt spray and humidity exposure testing. Tests results showed that the DNBM definitely added a corrosion inhibiting effect without compromising the functional properties of the coatings.
- OSTI ID:
- 83096
- Report Number(s):
- CONF-940222--
- Country of Publication:
- United States
- Language:
- English
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