%0 journal article
%@ 2046-2069
%A Maia, F., Tedim, J., Bastos, A.C., Ferreira, M.G.S., Zheludkevich, M.L.

%D 2014
%J RSC Advances
%N 34
%P 17780-17786 
%R doi:10.1039/c4ra00826j
%T Active sensing coating for early detection of corrosion processes
%U https://doi.org/10.1039/c4ra00826j
34 
%X 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.