Influence of the Treatment Time on the Surface Chemistry and Corrosion Behavior of Cerium-Based Conversion Coatings on the AZ91D Magnesium Alloy
The aim of the present work was to investigate the effect of the treatment time on the surface chemistry and corrosion behavior of cerium-based chemical conversion coatings on the AZ91D magnesium alloy. The conversion coating was prepared by the immersion technique from a bath consisting of 0.05 mol...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2020-01-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000700279&tlng=en |
| _version_ | 1818972888310480896 |
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| author | Eloana Patrícia Ribeiro Antonio Augusto Couto Leandro Antonio de Oliveira Renato Altobelli Antunes |
| author_facet | Eloana Patrícia Ribeiro Antonio Augusto Couto Leandro Antonio de Oliveira Renato Altobelli Antunes |
| author_sort | Eloana Patrícia Ribeiro |
| collection | DOAJ |
| description | The aim of the present work was to investigate the effect of the treatment time on the surface chemistry and corrosion behavior of cerium-based chemical conversion coatings on the AZ91D magnesium alloy. The conversion coating was prepared by the immersion technique from a bath consisting of 0.05 mol.L-1 Ce(NO3)3.6H2O and 0.254 mol.L-1 H2O2 (30 wt.%) for times ranging from 20 s to 120 s. The surface chemistry was examined by X-ray photoelectron spectroscopy (XPS). The corrosion behavior was assessed by electrochemical impedance spectroscopy and potentiodynamic polarization. XPS analysis detected the presence of cerium oxides (Ce2O3 and CeO2) and cerium/magnesium hydroxides. The best corrosion behavior was observed for the treatment conducted for 60 s. The results are discussed with respect to coating morphology and composition. |
| first_indexed | 2024-12-20T15:15:25Z |
| format | Article |
| id | doaj.art-598aa2872e2749a68e921ff9fc96f6ae |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-20T15:15:25Z |
| publishDate | 2020-01-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-598aa2872e2749a68e921ff9fc96f6ae2022-12-21T19:36:10ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392020-01-0122suppl 110.1590/1980-5373-mr-2018-0862Influence of the Treatment Time on the Surface Chemistry and Corrosion Behavior of Cerium-Based Conversion Coatings on the AZ91D Magnesium AlloyEloana Patrícia Ribeirohttps://orcid.org/0000-0002-1133-6445Antonio Augusto CoutoLeandro Antonio de Oliveirahttps://orcid.org/0000-0002-0772-8083Renato Altobelli Antuneshttps://orcid.org/0000-0003-1540-6495The aim of the present work was to investigate the effect of the treatment time on the surface chemistry and corrosion behavior of cerium-based chemical conversion coatings on the AZ91D magnesium alloy. The conversion coating was prepared by the immersion technique from a bath consisting of 0.05 mol.L-1 Ce(NO3)3.6H2O and 0.254 mol.L-1 H2O2 (30 wt.%) for times ranging from 20 s to 120 s. The surface chemistry was examined by X-ray photoelectron spectroscopy (XPS). The corrosion behavior was assessed by electrochemical impedance spectroscopy and potentiodynamic polarization. XPS analysis detected the presence of cerium oxides (Ce2O3 and CeO2) and cerium/magnesium hydroxides. The best corrosion behavior was observed for the treatment conducted for 60 s. The results are discussed with respect to coating morphology and composition.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000700279&tlng=enAZ91D alloycerium conversion coatingXPScorrosion |
| spellingShingle | Eloana Patrícia Ribeiro Antonio Augusto Couto Leandro Antonio de Oliveira Renato Altobelli Antunes Influence of the Treatment Time on the Surface Chemistry and Corrosion Behavior of Cerium-Based Conversion Coatings on the AZ91D Magnesium Alloy Materials Research AZ91D alloy cerium conversion coating XPS corrosion |
| title | Influence of the Treatment Time on the Surface Chemistry and Corrosion Behavior of Cerium-Based Conversion Coatings on the AZ91D Magnesium Alloy |
| title_full | Influence of the Treatment Time on the Surface Chemistry and Corrosion Behavior of Cerium-Based Conversion Coatings on the AZ91D Magnesium Alloy |
| title_fullStr | Influence of the Treatment Time on the Surface Chemistry and Corrosion Behavior of Cerium-Based Conversion Coatings on the AZ91D Magnesium Alloy |
| title_full_unstemmed | Influence of the Treatment Time on the Surface Chemistry and Corrosion Behavior of Cerium-Based Conversion Coatings on the AZ91D Magnesium Alloy |
| title_short | Influence of the Treatment Time on the Surface Chemistry and Corrosion Behavior of Cerium-Based Conversion Coatings on the AZ91D Magnesium Alloy |
| title_sort | influence of the treatment time on the surface chemistry and corrosion behavior of cerium based conversion coatings on the az91d magnesium alloy |
| topic | AZ91D alloy cerium conversion coating XPS corrosion |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000700279&tlng=en |
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