| Titre : |
The polyaniline-modified TiO2 composites in water-based epoxy coating for corrosion protection of Q235 steel |
| Type de document : |
texte imprimé |
| Auteurs : |
Xuehui Liu, Auteur ; Peimin Hou, Auteur ; Xia Zhao, Auteur ; Xiumin Ma, Auteur ; Baorong Hou, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 71-80 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Acier -- Conservation
Anticorrosifs
Anticorrosion
Chimie analytique
Dioxyde de titane
Epoxydes
Métaux -- Revêtements protecteurs
Polyacrylonitrile
Revêtement autoréparant
Spectroscopie d'impédance électrochimique
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The development of active systems to protect metal substrates against corrosion is a promising approach for many industrial applications. In this work, a self-healing coating based on TiO2 particles modified with polyaniline (PANI) was prepared for corrosion protection of Q235 steel. TiO2/PANI particles were synthesized by in situ polymerization and dispersed into a water-based epoxy coating. The structure and morphology of as-prepared TiO2/PANI particles were characterized by FTIR, XRD, and SEM. The anticorrosion performance of the coating was studied by electrochemical impedance spectroscopy (EIS) and scanning electrochemical microscopy (SECM). EIS analysis showed improved corrosion protection properties in the presence of TiO2/PNAI particles. SECM measurements were performed to monitor the reduction of oxygen process as a function of exposure time in 3.5% NaCl solution. SECM results showed that the epoxy coating with TiO2/PANI particles had a superior corrosion protection relative to the blank coating after artificial defect exposure to the corrosive environment. |
| Note de contenu : |
- EXPERIMENTAL SECTION : Materials - Preparation of TiO2 particles - Preparation of TiO2/PANI particles - Preparation of water-based epoxy coatings - Characterization
- RESULTS AND DISCUSSION : Characterization of TiO2 particles - Surface properties of the coatings - Evaluation of anticorrosion performance |
| DOI : |
10.1007/s11998-018-0101-4 |
| En ligne : |
https://link.springer.com/article/10.1007/s11998-018-0101-4 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31966 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 1 (01/2019) . - p. 71-80
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The polyaniline-modified TiO2 composites in water-based epoxy coating for corrosion protection of Q235 steel in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 1 (01/2019)
