Efecto del cobalto sobre nano-partículas de óxido de zinc en el desempeño anticorrosivo de un imprimante alquídico

Santiago Flores; Oscar Chumpitaz

doi:10.3989/revmetalm.139

Autores/as

Santiago Flores Instituto de Corrosión y Protección, Pontificia Universidad Católica del Perú https://orcid.org/0000-0001-5683-7182
Oscar Chumpitaz Instituto de Corrosión y Protección, Pontificia Universidad Católica del Perú https://orcid.org/0000-0003-3268-2854

DOI:

https://doi.org/10.3989/revmetalm.139

Palabras clave:

Corrosión, Nanopartículas, Óxido de cobalto, Óxido de zinc, Protección anticorrosiva, Síntesis por combustión de solución

Resumen

El objetivo de esta investigación ha sido estudiar el efecto inhibidor del CoO en ZnO obtenidos por síntesis por combustión de solución (SCS) cuando son incorporados a formulaciones alquídicas. ZnO y óxidos mixtos del tipo Zn_1-xCo_xO (donde x = 0,05-0,10-0,15-0,20) fueron obtenidos por SCS y caracterizados por XRD, ICP-OES, SEM y TEM. Los pigmentos fueron incorporados a imprimantes alquídicos medios en aceite en tres proporciones de 5%, 10% y 20% en peso pigmentos/resina. Probetas de acero protegidas con las formulaciones alquídicas fueron ensayadas en cámaras de niebla salina y dióxido de azufre. Asimismo, la eficiencia inhibidora de los pigmentos fue estimada mediante ensayos electroquímicos (método de Tafel) en solución 0,1 M de NaCl. Los resultados mostraron que el CoO mejora las propiedades inhibidoras de los nano-pigmentos base ZnO obtenidos por SCS.

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Citas

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