Formulation and assessment of Wash-Primer containing lanthanum tannate for steel temporary protection
Tannins are polyphenols synthesized by plants and useful for the coating industry as corrosion inhibitors. In addition, lanthanum salts have a great inhibitory effect on steel corrosion. The aim of this study was to obtain lanthanum ‘‘tannate’’ with adequate solubility to be incorporated as the corr...
| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2018
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/94935 |
| Aporte de: |
| id |
I19-R120-10915-94935 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ingeniería Química Coatings and paints Corrosion Electrochemical impedance spectroscopy Lanthanum Tannins |
| spellingShingle |
Ingeniería Química Coatings and paints Corrosion Electrochemical impedance spectroscopy Lanthanum Tannins D'Alessandro, Oriana Selmi, Gonzalo Deyá, Marta Cecilia Di Sarli, Alejandro Ramón Romagnoli, Roberto Formulation and assessment of Wash-Primer containing lanthanum tannate for steel temporary protection |
| topic_facet |
Ingeniería Química Coatings and paints Corrosion Electrochemical impedance spectroscopy Lanthanum Tannins |
| description |
Tannins are polyphenols synthesized by plants and useful for the coating industry as corrosion inhibitors. In addition, lanthanum salts have a great inhibitory effect on steel corrosion. The aim of this study was to obtain lanthanum ‘‘tannate’’ with adequate solubility to be incorporated as the corrosion inhibitor in a wash-primer. The ‘‘tannate’’ was obtained from commercial ‘‘Quebracho’’ tannin and 0.1 M La(NO3)3. The soluble tannin was determined by the Folin–Denis reagent, while the concentration of Lanthanum was obtained by a gravimetric procedure. The protective action of ‘‘tannate’’ on SAE 1010 steel was evaluated by linear polarization curves and corrosion potential measurements. Lanthanum ‘‘tannate’’ was incorporated in a wash-primer formulation and tested by corrosion potential and ionic resistance measurements. The corrosion rate was also determined by the polarization resistance technique. Besides, the primer was incorporated in an alkyd paint system and its anticorrosion performance assessed in the salt spray cabinet and by electrochemical impedance spectroscopy. Results showed that lanthanum ‘‘tannate’’ primer inhibits the development of deleterious iron oxyhydroxides on the steel substrate and incorporated into a paint system had a similar behavior to the primer formulated with zinc tetroxychromate. |
| format |
Articulo Articulo |
| author |
D'Alessandro, Oriana Selmi, Gonzalo Deyá, Marta Cecilia Di Sarli, Alejandro Ramón Romagnoli, Roberto |
| author_facet |
D'Alessandro, Oriana Selmi, Gonzalo Deyá, Marta Cecilia Di Sarli, Alejandro Ramón Romagnoli, Roberto |
| author_sort |
D'Alessandro, Oriana |
| title |
Formulation and assessment of Wash-Primer containing lanthanum tannate for steel temporary protection |
| title_short |
Formulation and assessment of Wash-Primer containing lanthanum tannate for steel temporary protection |
| title_full |
Formulation and assessment of Wash-Primer containing lanthanum tannate for steel temporary protection |
| title_fullStr |
Formulation and assessment of Wash-Primer containing lanthanum tannate for steel temporary protection |
| title_full_unstemmed |
Formulation and assessment of Wash-Primer containing lanthanum tannate for steel temporary protection |
| title_sort |
formulation and assessment of wash-primer containing lanthanum tannate for steel temporary protection |
| publishDate |
2018 |
| url |
http://sedici.unlp.edu.ar/handle/10915/94935 |
| work_keys_str_mv |
AT dalessandrooriana formulationandassessmentofwashprimercontaininglanthanumtannateforsteeltemporaryprotection AT selmigonzalo formulationandassessmentofwashprimercontaininglanthanumtannateforsteeltemporaryprotection AT deyamartacecilia formulationandassessmentofwashprimercontaininglanthanumtannateforsteeltemporaryprotection AT disarlialejandroramon formulationandassessmentofwashprimercontaininglanthanumtannateforsteeltemporaryprotection AT romagnoliroberto formulationandassessmentofwashprimercontaininglanthanumtannateforsteeltemporaryprotection |
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Repositorios |
| _version_ |
1764820492058886149 |