THE INFLUENCE OF GALLIC ACID ON THE REDUCTION OF RUST ON PAINTED STEEL SURFACES

Authors
FAVRE M LANDOLT D
Citation
M. Favre et D. Landolt, THE INFLUENCE OF GALLIC ACID ON THE REDUCTION OF RUST ON PAINTED STEEL SURFACES, Corrosion science, 34(9), 1993, pp. 1481-1494
Citations number
40
Categorie Soggetti
Metallurgy & Mining
Journal title
Corrosion science → ACNP
ISSN journal
0010938X
Volume
34
Issue
9
Year of publication
1993
Pages
1481 - 1494
Database
ISI
SICI code
0010-938X(1993)34:9<1481:TIOGAO>2.0.ZU;2-Q
Abstract
Tannins are a possible replacement for red lead in primary paints used for the corrosion protection of steel structures but their reaction m echanism is controversial. Using gallic acid as a model compound the r eaction of tannins with rust is being investigated using FTIR spectros copy, X-ray diffraction and electrochemical reduction. The results obt ained by the different methods suggest that gallic acid inhibits the t ransformation of lepidocrocite into magnetite.