Electrochemical Behavior During the Zirconium Conversion Coating Formation on AISI 1006 Steel
| Autor: | Alexandre Giacobbo, Rita Sánchez-Tovar, Juliana dos Anjos-Moraes, Rafael Leiva García, José García-Antón, Jane Zoppas Ferreira |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Aço-carbono chemistry.chemical_element Electrolyte Zirconium Conversion Coating engineering.material Electrochemistry Coating Polarization Immersion (virtual reality) General Materials Science Polarization (electrochemistry) Materials of engineering and construction. Mechanics of materials Zirconium EIS Mechanical Engineering Revestimento de proteção Condensed Matter Physics Dielectric spectroscopy Cold Rolled Steel chemistry Chemical engineering Mechanics of Materials Conversion coating engineering TA401-492 Óxido de zircônio |
| Zdroj: | Materials Research, Vol 22, Iss 5 (2019) Materials Research v.22 n.5 2019 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS Materials Research, Volume: 22, Issue: 5, Article number: e20180322, Published: 12 SEP 2019 |
| ISSN: | 1516-1439 |
| Popis: | This study investigated a conversion coating based on hexafluorozirconic acid solution on cold-rolled (AISI 1006) steel sheets, in situ, at different pH values and immersion times. Electrochemical characterization was carried out by electrochemical impedance spectroscopy (EIS) with hexafluorozirconic acid bath as the electrolyte. Laser scanning confocal microscopy (LSCM) was used to evaluate the morphology of the coating in situ, i.e., during the coating formation. According to the results, the polarization resistance (Rp) of the conversion coating is affected by the immersion time and by the pH of the conversion bath. The electrochemical analyzes point out conversion baths at pH between 3.5 and 4.5 and immersion times from 600 to 900 s as optimal operating conditions, achieving an average polarization resistance of 713 ± 107 Ω cm2 . |
| Databáze: | OpenAIRE |
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