Macromolecules for inhibition of corrosion and wear. Progress report

Technical Report · Mon Dec 14 04:00:00 EST 1992

OSTI ID:6580455

Conte, A A; Agarwala, V S

The phthalocyanines and Schiff base compounds are uniquely qualified inhibitors for corrosion. They are high electron density molecules for interaction with the metal surface, and possess large spatially arranged structures to serve as environmental barriers. Additionally, these compounds do stack-up as layered structures which provides shear planes, thus serving as lubricants. A number of these compounds have been synthesized and studied. Both electrochemical impedance spectroscopic and potentiostatic polarization techniques were used to determine their corrosion inhibition efficiencies. Wear studies were made using grease lubricated stainless steel miniature bearings. The results have shown that Schiff base compounds can be good additives for greases as they enhance wear life of bearings and inhibit corrosion by at least and order of magnitude. Although phthalocyanines, both monomers and polymers, provided a significant corrosion inhibition efficiencies (> 90%), they were not effective lubricants compared to the Schiff bases.... Schiff Base, Phthalocyanine, Additives, Fluorinated grease.

• Research Organization: Naval Air Warfare Center, Warminster, PA (United States). Aircraft Div.
• OSTI ID: 6580455
• Report Number(s): AD-A-261041/8/XAB; NAWCADWAR--92112-60
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
360603 -- Materials-- Properties
360604* -- Materials-- Corrosion
Erosion
& Degradation
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400200 -- Inorganic
Organic
& Physical Chemistry
ADDITIVES
BEARINGS
CHEMISTRY
CORROSION PROTECTION
CORROSION RESISTANCE
DOCUMENT TYPES
DYES
ELECTROCHEMISTRY
ELECTRON DENSITY
ELEMENTS
GREASES
HETEROCYCLIC COMPOUNDS
IMINES
IMPEDANCE
LUBRICANTS
METALS
MONOMERS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHTHALOCYANINES
PROGRESS REPORT
SCHIFF BASES
SHEAR
WEAR