Journal article 1645 views 505 downloads
Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments
C.A.J. Richards,
H.N. McMurray,
G. Williams,
Geraint Williams,
Hamilton McMurray
Corrosion Science
Swansea University Authors: Geraint Williams, Hamilton McMurray
-
PDF | Accepted Manuscript
Download (20.33MB)
DOI (Published version): 10.1016/j.corsci.2019.04.005
Abstract
A novel cationic benzotriazole pigment (CBP) based on the benzotriazolium cation (BTAH2+) exchanged into a sulfonated organic resin has been synthesized and evaluated as a means of inhibiting the corrosion-driven cathodic disbondment of organic coatings from the surface of galvanized steel. The CBP...
| Published in: | Corrosion Science |
|---|---|
| ISSN: | 0010-938X |
| Published: |
2019
|
| Online Access: |
Check full text
|
| URI: | https://cronfa.swan.ac.uk/Record/cronfa49933 |
| Abstract: |
A novel cationic benzotriazole pigment (CBP) based on the benzotriazolium cation (BTAH2+) exchanged into a sulfonated organic resin has been synthesized and evaluated as a means of inhibiting the corrosion-driven cathodic disbondment of organic coatings from the surface of galvanized steel. The CBP is acidic in nature (BTAH2+ pKa ≈ 1.1) and is intended to be compatible with acidic coating formulations such as etch-primers. Delamination rates, as measured using a scanning Kelvin probe (SKP), were found to decrease monotonically with increasing CBP volume fraction (ΦCBP) and to approach zero when ΦCBP = 0.1. The mechanism of CBP operation is described. |
|---|---|
| Keywords: |
benzotriazole, corrosion, inhibition, zinc, galvanized steel |
| College: |
Faculty of Science and Engineering |