Anticorrosive performance of commercial nanoceramic coatings on AISI 1010 steel
| Autor: | Estela Knopp Kerstner, Lilian Vanessa Rossa Beltrami, Sandra Raquel Kunst, Maria Rita Ortega Vega, Célia de Fraga Malfatti, Lisete Cirstina Scienza |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Revestimento nanocerâmico Scanning electron microscope zinc phosphate chemistry.chemical_element Zinc engineering.material Nanoceramic Corrosion chemistry.chemical_compound Chromium Corrosão Coating General Materials Science steel Composite material Polarization (electrochemistry) Materials of engineering and construction. Mechanics of materials nanoceramic coatings Fosfato de zinco corrosion Aço Mechanical Engineering Metallurgy Zinc phosphate Condensed Matter Physics chemistry Mechanics of Materials TA401-492 engineering |
| Zdroj: | Materials Research v.17 n.6 2014 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Volume: 17, Issue: 6, Pages: 1497-1506, Published: DEC 2014 Materials Research, Vol 17, Iss 6, Pp 1497-1506 (2014) Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
| Popis: | The aim of this work was to study the corrosion behavior of three commercial nanoceramic coatings in comparison to zinc phosphate coatings applied on mild steel (SAE 1010). The coatings were evaluated by scanning electron microscopy (SEM), profilometry and hydrophobicity. The electrochemical behavior was evaluated by dynamic polarization. The results showed that the samples coated with nanoceramics presented contact angles greater than 100°, achieving hydrophobic behavior. Evaluating the electrochemical behavior under dynamic polarization revealed that the nanoceramic coating containing chromium (CHT) exhibited a higher corrosion potential and lower current than the other nanoceramic coatings tested, although its performance in a dilute sodium chloride solution was below that of the zinc phosphate-based coating. Although the nanoceramic coatings exhibited poor electrochemical behavior compared to the zinc-based coatings, they had a higher corrosion resistance when associated with an organic coating. |
| Databáze: | OpenAIRE |
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