Evaluation of Nicotiana Leaves Extract as Corrosion Inhibitor for Steel in Acidic and Neutral Chloride Solutions
The inhibition of steel corrosion in hydrochloric acid and sodium chloride solutions by Nicotiana leaves extract was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy measurements. Polarization curves showed that the extract behaves as a mixed type inhibitor in acidic medium, while it acts as anodic type in neutral medium. Impedance measurements indicated that the size of the semicircles obtained increased with increasing the concentration of the extract and decreasing the chloride ion concentration. Nicotiana leaves extract was found to be more effective in controlling corrosion of steel in acidic solution than in neutral one. The activation parameters of the corrosion reaction of steel in acid media in absence and presence of nicotiana leaves extract were also calculated and discussed.
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedade Portuguesa de Electroquímica
2012
|
| Online Access: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000400002 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
oai:scielo:S0872-19042012000400002 |
|---|---|
| record_format |
ojs |
| spelling |
oai:scielo:S0872-190420120004000022013-04-22Evaluation of Nicotiana Leaves Extract as Corrosion Inhibitor for Steel in Acidic and Neutral Chloride SolutionsAbd-El-Khalek,D.E.Abd-El-Nabeyb,Abdel-Gaberb,A.M. steel corrosion acid neutral extract The inhibition of steel corrosion in hydrochloric acid and sodium chloride solutions by Nicotiana leaves extract was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy measurements. Polarization curves showed that the extract behaves as a mixed type inhibitor in acidic medium, while it acts as anodic type in neutral medium. Impedance measurements indicated that the size of the semicircles obtained increased with increasing the concentration of the extract and decreasing the chloride ion concentration. Nicotiana leaves extract was found to be more effective in controlling corrosion of steel in acidic solution than in neutral one. The activation parameters of the corrosion reaction of steel in acid media in absence and presence of nicotiana leaves extract were also calculated and discussed.info:eu-repo/semantics/openAccessSociedade Portuguesa de ElectroquímicaPortugaliae Electrochimica Acta v.30 n.4 20122012-07-01info:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000400002en10.4152/pea.201204247 |
| institution |
SCIELO |
| collection |
OJS |
| country |
Portugal |
| countrycode |
PT |
| component |
Revista |
| access |
En linea |
| databasecode |
rev-scielo-pt |
| tag |
revista |
| region |
Europa del Sur |
| libraryname |
SciELO |
| language |
English |
| format |
Digital |
| author |
Abd-El-Khalek,D.E. Abd-El-Nabeyb, Abdel-Gaberb,A.M. |
| spellingShingle |
Abd-El-Khalek,D.E. Abd-El-Nabeyb, Abdel-Gaberb,A.M. Evaluation of Nicotiana Leaves Extract as Corrosion Inhibitor for Steel in Acidic and Neutral Chloride Solutions |
| author_facet |
Abd-El-Khalek,D.E. Abd-El-Nabeyb, Abdel-Gaberb,A.M. |
| author_sort |
Abd-El-Khalek,D.E. |
| title |
Evaluation of Nicotiana Leaves Extract as Corrosion Inhibitor for Steel in Acidic and Neutral Chloride Solutions |
| title_short |
Evaluation of Nicotiana Leaves Extract as Corrosion Inhibitor for Steel in Acidic and Neutral Chloride Solutions |
| title_full |
Evaluation of Nicotiana Leaves Extract as Corrosion Inhibitor for Steel in Acidic and Neutral Chloride Solutions |
| title_fullStr |
Evaluation of Nicotiana Leaves Extract as Corrosion Inhibitor for Steel in Acidic and Neutral Chloride Solutions |
| title_full_unstemmed |
Evaluation of Nicotiana Leaves Extract as Corrosion Inhibitor for Steel in Acidic and Neutral Chloride Solutions |
| title_sort |
evaluation of nicotiana leaves extract as corrosion inhibitor for steel in acidic and neutral chloride solutions |
| description |
The inhibition of steel corrosion in hydrochloric acid and sodium chloride solutions by Nicotiana leaves extract was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy measurements. Polarization curves showed that the extract behaves as a mixed type inhibitor in acidic medium, while it acts as anodic type in neutral medium. Impedance measurements indicated that the size of the semicircles obtained increased with increasing the concentration of the extract and decreasing the chloride ion concentration. Nicotiana leaves extract was found to be more effective in controlling corrosion of steel in acidic solution than in neutral one. The activation parameters of the corrosion reaction of steel in acid media in absence and presence of nicotiana leaves extract were also calculated and discussed. |
| publisher |
Sociedade Portuguesa de Electroquímica |
| publishDate |
2012 |
| url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000400002 |
| work_keys_str_mv |
AT abdelkhalekde evaluationofnicotianaleavesextractascorrosioninhibitorforsteelinacidicandneutralchloridesolutions AT abdelnabeyb evaluationofnicotianaleavesextractascorrosioninhibitorforsteelinacidicandneutralchloridesolutions AT abdelgaberbam evaluationofnicotianaleavesextractascorrosioninhibitorforsteelinacidicandneutralchloridesolutions |
| _version_ |
1756001887676530688 |