Fluorinated schiff base compound as corrosion inhibitor for steel

Book · Fri Dec 01 04:00:00 EST 1995

OSTI ID:128682

Mehta, N K ^[1]; Agarwala, V S ^[2]; Perez, A ^[3]; Rajan, K S ^[4]

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1. Univ. of Puerto Rico, Mayaguez (Puerto Rico). Dept. of Chemical Engineering
2. Naval Air Warfare Center, Warminster, PA (United States). Aircraft Division
3. NAVMAR Corp., Warminster, PA (United States)
4. I.I.T. Research Inst., Chicago, IL (United States)

A study to evaluate wear and corrosion inhibition, and the mode of molecular bonding of a fluorinated schiff base compound (imine compounds), a condensation reaction product of 4-fluorobenzaldehyde and 4,4{prime}-benzidine, onto AISI 1010 steel surface was undertaken to develop a new lubricant additive for creases, Physical vapor adsorption and chemisorption techniques were used for the deposition of schiff base on the metal surface. The schiff base was found to adhere best with the physical adsorption technique. It involved heating of freshly cleaned specimens suspended over schiff base in an all-glass covered container placed in a vacuum oven maintained at 420 F for approximately 70 hours. Potentiodynamic polarization measurements, made in a 0.1 % sodium chloride solution, showed a drastic shift of the anodic polarization curves to lower current densities for the steel specimens coated with schiff base. The calculated corrosion inhibition efficiency was >90 percent for the compound under both deposition techniques. The four-ball wear test showed a 34--40% reduction in scar size when used as an additive to a MIL-G-24139 grease.

• OSTI ID: 128682
• Report Number(s): CONF-950304--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHEMISORPTION
CORROSION INHIBITORS
CORROSION PROTECTION
CURRENT DENSITY
ELECTRIC POTENTIAL
EXPERIMENTAL DATA
FOURIER TRANSFORM SPECTROMETERS
PHYSICAL VAPOR DEPOSITION
POTENTIOMETERS
SCHIFF BASES
SILANES
SODIUM CHLORIDES
STEELS
WEAR