Khillah extract as inhibitor for acid corrosion of SX 316 steel

The inhibitive effect of the extract of khillah ( Ammi visnaga) seeds, on the corrosion of SX 316 steel in HCl solution was determined using weight loss measurements as well as potentiostatic technique. It was found that the presence of the extract reduces markedly the corrosion rate of steel in the...

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Bibliographic Details
Published inApplied surface science Vol. 252; no. 24; pp. 8521 - 8525
Main Author El-Etre, A.Y.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.10.2006
Elsevier Science
Subjects
Acid inhibition
Applied sciences
Corrosion
Corrosion mechanisms
Corrosion protection
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Khillah
Materials science
Metals. Metallurgy
Natural product
Physics
Steel 316
Surface treatments
Acid inhibition
Natural product
Steel 316
Khillah
Potentiostatic method
Polarization diagram
Corrosion inhibitors
Weight loss
Steels
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Summary:The inhibitive effect of the extract of khillah ( Ammi visnaga) seeds, on the corrosion of SX 316 steel in HCl solution was determined using weight loss measurements as well as potentiostatic technique. It was found that the presence of the extract reduces markedly the corrosion rate of steel in the acid solution. The inhibition efficiency increases as the extract concentration is increased. The inhibitive effect of khillah extract was discussed on the basis of adsorption of its components on the metal surface. Negative values were calculated for the energy of adsorption indicating the spontaneity of the adsorption process. The formation of insoluble complexes as a result of interaction between iron cations and khellin, which present in the extract, was also discussed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2005.11.066