Effect of ecofriendly sealing coat against corrosion protection of steel rebars in concrete
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Effect of ecofriendly sealing coat against
corrosion protection of steel rebars in concrete
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| Creator |
Saraswathy, V.
karthick, SP. |
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| Subject |
Corrosion Protection
Corrosion Science and Engineering |
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| Description |
Phosphating is one of the most important chemical conversion treatments for steel, mainly to improve
corrosion resistance and paint adhesion and as an absorbing layer for waxes, oils, lacquers, etc.
However, phosphate coating are crystalline and porous and need a sealing treatment after
phosphating. Chromate sealing is a well known practice, and due to its toxicity, development of an
ecofriendly sealing treatment is very essential. This paper focuses on the effect of zinc phosphate
chemical conversion coating with the addition of nano-SiO2 to protect the mild steel rebars against
corrosion in chloride contaminated concrete. The coated surfaces were characterised by scanning
electron microscopy and X-ray diffraction. Corrosion resistances of coated and uncoated rebars were
evaluated by anodic polarisation, linear polarisation resistance, Tafel and alternating current impedance
spectroscopy and cyclic polarisation technique. The results indicated that the coated rebars have
considerably reduced the corrosion rate even in the presence of 3% chloride environments
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| Publisher |
Maney
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| Date |
2014
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3130/1/042-2014.pdf
Saraswathy, V. and karthick, SP. (2014) Effect of ecofriendly sealing coat against corrosion protection of steel rebars in concrete. Corrosion Engineering, Science Technology, 49 (5). pp. 327-334. ISSN 1478-422X |
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| Relation |
http://cecri.csircentral.net/3130/
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