Cut-edge corrosion behavior assessment of newly developed environmental-friendly coating systems using the Scanning Vibrating Electrode Technique (SVET)
| Autor: | Louis Gommans, Scott Morrison, Sina Sheikholeslami, Wei Gao, H. Neil McMurray, David E. Williams, Geraint Williams, Sonny Ngo |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Benzotriazole General Chemical Engineering Metallurgy chemistry.chemical_element General Chemistry Calcium engineering.material Environmentally friendly Galvanization Corrosion Cathodic protection chemistry.chemical_compound symbols.namesake chemistry Coating Calcium silicate engineering symbols General Materials Science |
| Popis: | Accelerated cut-edge corrosion performance of commercialized full waterborne coating systems containing enviro-friendly corrosion inhibitors was studied on 55 wt% Al, 44 wt% Zn and 1 wt% Si galvanized steel in 5 wt% NaCl solution at ambient temperature via the Scanning Vibrating Electrode Technique (SVET). At the same volume content (7–11 wt%), benzotriazole pigments had a better overall cut-edge corrosion performance than calcium ion exchanged silica pigments. It was due to benzotriazole’s superior cathodic protection of the cut-edge in comparison with calcium silicate. Furthermore, although both enviro-friendly inhibitors did not exhibit the same performance level as the conventional Cr(VI)-containing system, they exhibited promising results in inhibiting cut-edge corrosion in a fully commercialized waterborne coating system. |
| Databáze: | OpenAIRE |
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