Use of tannin anticorrosive reaction primer to improve traditional coating systems

Journal Article · Thu Mar 31 23:00:00 EST 1994 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3294333· OSTI ID:7037588

Matamala, G; Droguett, G ^[1]; Smeltzer, W ^[2]

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1. Universidad de Concepcion (Chile)
2. McMaster Univ., Hamilton, Ontario (Canada). Inst. for Materials Research

Different anticorrosive schemes applied over plain or previously shot-blasted surfaces of AISI 1010 (UNS G10100) steel plates were compared. Plates were painted with alkydic, vinylic, and epoxy anticorrosive schemes over metal treated previously with pine tannin reaction primer and over its own schemes without previous primer treatment. Anticorrosive tests were conducted in a salt fog chamber according to ASTM B 117-73. Rusting, blistering, and adhesion were assessed over time. The survey was complemented with potentiodynamic scanning tests in sodium chloride (NaCl) solution with a concentration equivalent to seawater. Corrosion currents were determined using Tafel and polarization resistance techniques. Results showed the reaction primer inhibited corrosion by improving adherence. Advantages over traditional conversion primers formulated in a base of zinc chromate in phosphoric medium were evident.

• OSTI ID: 7037588
• Journal Information: Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 50:4; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
AROMATICS
CARBOXYLIC ACIDS
COATINGS
CORROSION INHIBITORS
CORROSION PROTECTION
DEPOSITION
HYDROXY COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MEASURING METHODS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PERFORMANCE TESTING
PHENOLS
POLYPHENOLS
PROTECTIVE COATINGS
STEELS
SURFACE COATING
TANNIC ACID
TESTING