The inhibiting effect of calcium nitrite on the corrosion of steel in solutions simulating concrete with different carbonation degree

被引：0
作者：
Krolikowski, Andrzej [1 ]
Wardzinska, Dorota [2 ]
Kuziak, Justyna [3 ]
机构：
[1] Warsaw Univ Sci & Technol, Wydzial Chem, Warsaw, Poland
[2] Przemyslowy Inst Motoryzacji, Zakladzie Paliw Biopaliw & Srodkow Smarowych, Warsaw, Poland
[3] Warsaw Univ Sci & Technol, Wydzial Inzynierii Ladowej, Warsaw, Poland
来源：
OCHRONA PRZED KOROZJA | 2012年 / 55卷 / 04期
关键词：
steel; concrete; carbonation; corrosion; inhibition; calcium nitrite; impedance spectroscopy;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Studies of the inhibition of steel corrosion by calcium nitrite were performed in solutions simulating pore liquid in concrete with different degree of carbonation. Tests were done in the condition corresponding to the initiation of steel corrosion (the inhibitor was added to solutions before the exposure of steel) as well as in the condition corresponding to developed corrosion (the inhibitor was added after a long prior exposure of steel in corrosive solution, leading to severe corrosion). The inhibiting efficiency of calcium nitrite was estimated upon analysis of impedance and polarization data. It was found, that calcium nitrite shows high inhibition efficiency of the initiation of steel corrosion. For developed corrosion of steel (precorroded), this inhibitor is less effective and should be applied at higher concentrations.
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页码：168 / 171
页数：4
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