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Auteur Changlu Zhou |
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Crosslinked main-chain-type polybenzoxazine coatings for corrosion protection of mild steel / Xin Lu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 4 (07/2017)
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Titre : Crosslinked main-chain-type polybenzoxazine coatings for corrosion protection of mild steel Type de document : texte imprimé Auteurs : Xin Lu, Auteur ; Liu Yan, Auteur ; Wenfei Zhang, Auteur ; Xueying Zhang, Auteur ; Changlu Zhou, Auteur ; Zhong Xin, Auteur Année de publication : 2017 Article en page(s) : p. 937-944 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Analyse électrochimique
Anticorrosion
Métaux -- Revêtements protecteurs
PolybenzoxazineIndex. décimale : 667.9 Revêtements et enduits Résumé : Bisphenol A/diaminodiphenylmethane (BA-ddm)-based polybenzoxazine precursor was synthesized from 4,4′-diaminodiphenylmethane, bisphenol A, and paraformaldehyde. The curing behavior of BA-ddm was studied by using differential scanning calorimeter and Fourier transform infrared spectrometer techniques. To verify the anticorrosion property, cured polybenzoxazine (PBA-ddm) coatings were prepared on mild steel (MS) through dip-coating and thermal curing methods. The surface properties of cured PBA-ddm coatings were characterized by microscopy and contact angle measurement. The electrochemical measurements were carried out to investigate the corrosion properties of PBA-ddm-coated MS. The results showed that PBA-ddm-coated MS samples exhibited high anticorrosive performance with the corrosion current reduced by two orders of magnitude than that of pristine MS. Note de contenu : - EXPERIMENTAL SECTION : Materials - Synthssis of BA-ddm - Preparation of PBA-ddm coating - Chemical structure characterisation - Curing behavior of BA-ddn - Surface properties - Electrochemical measurement
- RESULTS AND DISCUSSION : Curing behavior of BA-ddn precursor - Surface properties of PBA-ddm coating - Corrosion protection property - Corrosion protection mechanismDOI : 10.1007/s11998-016-9902-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9902-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28935
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 4 (07/2017) . - p. 937-944[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19194 - Périodique Bibliothèque principale Documentaires Disponible Improved corrosion resistance and hydrophobic stability of sol-gel coatings by benzoxazine modification on aluminum alloys AA1060 / Zhou Zhou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)
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Titre : Improved corrosion resistance and hydrophobic stability of sol-gel coatings by benzoxazine modification on aluminum alloys AA1060 Type de document : texte imprimé Auteurs : Zhou Zhou, Auteur ; Juan Liu, Auteur ; Xin Meng, Auteur ; Changlu Zhou, Auteur Année de publication : 2024 Article en page(s) : p. 893-905 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aluminium -- Alliages
Anticorrosifs
Anticorrosion
Benzoxazine
Caractérisation
Hydrophobie
Métaux -- Revêtements protecteurs
Revêtements organiques
Silanes
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : A series of sol-gel coatings based on tetraethoxysilane (TEOS) was adopted in order to provide corrosion protection for aluminum alloys AA1060, which were modified by incorporating various ratios of silane-functionalized benzoxazine (Bz), labeled as Bz-based sol–gel coatings. Fourier transform infrared spectra were utilized to characterize the crosslinking network of Bz-based sol–gel coatings through calculating the conversion of Bz structure after the curing process, which was also further confirmed by the gel content test. Both hydrophobicity and corrosion resistance of Bz-based sol–gel coatings were fully investigated with the assistance of water contact angle (WCA) measurements, electrochemical impedance spectroscopy (EIS), and salt spray test. Bz incorporation could improve hydrophobic stability and corrosion resistance of Bz-based sol–gel coatings with increasing the Bz content during the 30-day immersion in a 3.5 wt% NaCl aqueous solution. Better performance of Bz-based sol–gel coatings than that of a control TEOS coating with a WCA above 93° and a charge-transfer resistance over 100 kΩ cm2 after 30-day EIS measurement shows their effective protective property for aluminum alloys. Note de contenu : - EXPERIMENTAL : Chemicals - Synthesis of Bz monomer - Surface treatment of aluminum alloys - Preparation of Bz-based sol-gel coatings - Characterization
- RESULTS AND DISCUSSION : Crosslinking structures of Bz-based sol-gel coatings - Hydrophobicity of Bz-based sol-gel coatings - Corrosion resistance behaviors of Bz-based sol-gel coatingsDOI : https://doi.org/10.1007/s11998-023-00858-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00858-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41065
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 3 (05/2024) . - p. 893-905[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24737 - Périodique Bibliothèque principale Documentaires Disponible 24688 - Périodique Bibliothèque principale Documentaires Disponible