| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7106620 | Progress in Organic Coatings | 2016 | 13 Pages |
Abstract
Comparison of failure mechanisms of silicone-epoxy hybrid coatings on mild steel and Al-alloy immersed in 5Â wt.% NaCl solution was studied by electrochemical impedance spectroscopy, pull-off tests, differential scanning calorimetry and ultra-depth three-dimensional microscope. The results show that there were the effects on diffusion behavior in middle immersion and oxide film formed on metals in final immersion for mild steel and Al-alloy substrates. The effect of coating thickness on the cross-linking density of silicone-epoxy polymer was obvious. The delaminated area and the roughness of coating/metal interfaces were discussed from their respective break-point frequency and fractal dimensions deduced from impedance measurements.
Keywords
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Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
X. Yuan, Z.F. Yue, Z.Q. Liu, S.F. Wen, L. Li, T. Feng,