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The Effect of Graphene on the Protective Properties of Water-Based Epoxy Coatings on Al2024-T3. INTERNATIONAL JOURNAL OF CORROSION 2017. [DOI: 10.1155/2017/1541267] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
0.5 and 1% wt. of graphene nanoflakes were added to an anticorrosive additives-free water-based epoxy resin applied to Al2024-T3 samples. Calorimetric (DSC) and adhesion (cross-cut test) tests indicated that the presence of graphene did not affect the polymerization process of the resin or its adhesion to the substrate while it had some effect on its wettability. Electrochemical Impedance Spectroscopy (EIS) results obtained suggested that the addition of a small amount of graphene greatly enhanced the protective properties of the epoxy coating, retarding electrolytes absorption and reducing the total amount of adsorbed water. The latter occurrence suggests that the graphene effect on coating performances is related to both extended diffusion pathway length and graphene/matrix interaction due to the unique properties of graphene.
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Astarita A, Scala A, Paradiso V, Squillace A, Iodice M, Indolfi M, Monetta T, Bellucci F. Structural health monitoring of metal components: A new approach based on electrochemical measurements. SURF INTERFACE ANAL 2012. [DOI: 10.1002/sia.5195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- A. Astarita
- Department of Materials and Production Engineering; University of Naples Federico II; le Tecchio 80; 80125; Naples; Italy
| | - A. Scala
- Department of Materials and Production Engineering; University of Naples Federico II; le Tecchio 80; 80125; Naples; Italy
| | - V. Paradiso
- Department of Materials and Production Engineering; University of Naples Federico II; le Tecchio 80; 80125; Naples; Italy
| | - A. Squillace
- Department of Materials and Production Engineering; University of Naples Federico II; le Tecchio 80; 80125; Naples; Italy
| | - M. Iodice
- National Research Council; Microelectronic and Microsystems Institute; Naples Section, Via P. Castellino 111; 80131; Naples; Italy
| | - M. Indolfi
- National Research Council; Microelectronic and Microsystems Institute; Naples Section, Via P. Castellino 111; 80131; Naples; Italy
| | - T. Monetta
- Department of Materials and Production Engineering; University of Naples Federico II; le Tecchio 80; 80125; Naples; Italy
| | - F. Bellucci
- Department of Materials and Production Engineering; University of Naples Federico II; le Tecchio 80; 80125; Naples; Italy
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