In-coating graphene nano-platelets for environmentally-friendly corrosion protection of iron
| Autor: | Calvin Richards, Hamilton McMurray, Jenny Baker, Geraint Williams, Carol Glover |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Kelvin probe force microscope
Materials science Graphene General Chemical Engineering Delamination 02 engineering and technology General Chemistry Electrolyte engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Chloride 0104 chemical sciences Corrosion law.invention Coating law Volume fraction medicine engineering General Materials Science Composite material 0210 nano-technology medicine.drug |
| Zdroj: | Corrosion Science. 114:169-172 |
| ISSN: | 0010-938X |
| DOI: | 10.1016/j.corsci.2016.11.009 |
| Popis: | A primer coating system adherent to iron substrates based on graphene nano-platelets (GNPs) dispersed in polyvinylbutyral (PVB) is presented. Using a scanning Kelvin probe (SKP), the composite coatings are shown to exhibit exceptional resistance to an important corrosion-driven failure process, namely cathodic delamination, when aqueous chloride electrolyte is introduced to a penetrating coating defect. Delamination rate kinetics are shown to correlate strongly with reductions in the rate of oxygen permeation through the coating with increasing GNP pigment volume fraction. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect