Mutual Influence of HEDP and SDS - Zn2+ System on Corrosion Inhibition of Carbon Steel
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Mutual Influence of HEDP and SDS - Zn2+ System on Corrosion
Inhibition of Carbon Steel
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| Creator |
Rajendran, S.
Amalraj, S.J. Sahayaraj, W. Rathish, R.J. Anthony, N. Palaniswamy, N. |
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| Subject |
Corrosion Science and Engineering
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| Description |
Rain water running down from the terrace was stored in concrete tanks and used for the study. The inhibition efficiency (IE)
of sodium dodecyl sulphate (SDS) in controlling corrosion of carbon steel immersed in rain water in the presence of Zn2+ and 1-
hydroxyethane-1,1-diphosphonic acid (HEDP) has been evaluated by weight loss method. SDS accelerates the corrosion rate.
SDS-Zn2+ system also accelerates the corrosion rate. Interestingly the SDS-Zn2+-HEDP system shows excellent IE. The SDS
(150 ppm) - Zn2+ (50 ppm) system is corrosive. When 50 ppm HEDP is added the IE becomes 80% The HEDP (100 ppm)
- Zn2+ (50 ppm) system has only 65% IE. When 100 ppm of SDS is added, IE increases to 93%. The protective film consists
of Fe2+-SDS complex, Fe2+-HEDP complex and Zn(OH)2 as revealed by FTIR spectra. The HEDP-Zn2+ system shows good IE.
The protective film consists of Fe2+-HEDP complex and Zn(OH)2. Rain water along with these formulations may be used in
cooling water systems in various industries.
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| Publisher |
SAEST
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| Date |
2005
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/211/1/108-2005.pdf
Rajendran, S. and Amalraj, S.J. and Sahayaraj, W. and Rathish, R.J. and Anthony, N. and Palaniswamy, N. (2005) Mutual Influence of HEDP and SDS - Zn2+ System on Corrosion Inhibition of Carbon Steel. Transactions of the SAEST, 40 (1). pp. 35-39. |
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| Relation |
http://cecri.csircentral.net/211/
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