Active sensing coating for early detection of corrosion processes

被引：56

作者：

Maia, Frederico ^{[1
]}

Tedim, Joao ^{[1
]}

Bastos, Alexandre C. ^{[1
]}

Ferreira, Mario G. S. ^{[1
]}

Zheludkevich, Mikhail L. ^{[1
,2
]}

机构：

[1] Univ Aveiro, Dept Mat & Ceram Engn DEMaC, CICECO, P-3810193 Aveiro, Portugal

[2] Helmholtz Zentrum Geesthacht, Inst Mat Res, Magnesium Innovat Ctr MagIC, D-21502 Geesthacht, Germany

来源：

RSC ADVANCES | 2014年 / 4卷 / 34期

关键词：

PERFORMANCE;

D O I：

10.1039/c4ra00826j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：17780 / 17786

页数：7

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