Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1472699 | Corrosion Science | 2011 | 17 Pages |
Abstract
The use of Tryptophan (Trp) as a copper corrosion inhibitor was tested in 0.5 M aerated sulfuric acid (H2SO4) in the 20– temperature range. Its effectiveness was assessed through potentiodynamic (at 1 h, 72 h, 6 months), spectrophotometric (72 h tests) and gravimetric (72 h tests) tests. At 20– (1 h tests) the Trp adsorption followed Bockris–Swinkels' isotherm (x=2). The Trp even underwent over time (six month) a photodegradation, but surprisingly enough this did not affect the inhibition percentage (IP) which was 80% for the solutions kept in the dark as well as those kept in light.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
G. Moretti, F. Guidi,