Cut-edge corrosion behavior assessment of newly developed environmental-friendly coating systems using the Scanning Vibrating Electrode Technique (SVET)

Accelerated cut-edge corrosion performance of commercialized full waterborne coating systems containing enviro-friendly inhibitors was studied on 55 wt% Al, 44 Zn and 1 Si galvanized steel in 5 NaCl solution at ambient temperature via the Scanning Vibrating Electrode Technique (SVET). At same volume content (7–11 wt%), benzotriazole pigments had a better overall than calcium ion exchanged silica pigments. It due to benzotriazole’s superior cathodic protection comparison with silicate. Furthermore, although both did not exhibit level as conventional Cr(VI)-containing system, they exhibited promising results inhibiting fully system.