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Title: Active sensing coating for early detection of corrosion processes
Author: Maia, Frederico
Tedim, João
Bastos, Alexandre C.
Ferreira, Mario G. S.
Zheludkevich, Mikhail L.
Issue Date: 2014
Abstract: A corrosion sensing coating based on specially developed polymeric microcapsules with a pH-indicator is reported. The synthesis of the microcapsules is designed in a way to ensure their optimal compatibility with the polyurethane protective coatings and to allow release of the indicator at higher pH values. The obtained polyurea microcapsules have a regular and microsized morphology and a loading content of 12 wt%. The developed sensing coating applied on aluminium and magnesium alloys is able to indicate initiation of corrosion processes through a pink coating coloration, as a result of local pH increase in the cathodic areas.
Peer review: yes
DOI: 10.1039/c4ra00826j
ISSN: 2046-2069
Publisher Version: 10.1039/c4ra00826j
Appears in Collections:CICECO - Artigos

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