The article investigates the corrosion inhibition of aluminum in hydrochloric acid and sodium hydroxide solutions using semicarbazide, thiosemicarbazide, and diphenylcarbazide. The study demonstrated that these inhibitors showed higher efficiency in acidic conditions, and their adsorption followed the Frumkin isotherm, indicating they act as cathodic inhibitors without altering the hydrogen evolution mechanism. Results were consistent across thermometric, weight-loss, and polarization methods.

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Article
Inhibitory Effect of some carbazides on
corrosion of aluminium in hydrochloric acid
and sodium hydroxide solutions
1. Dr. A. S. Fouda1
,
2. A. A. Elshafei1
,
3. A. H. Elasklany1
and

4. 4. L. H. Madkour2
Article first published online: 15 SEP 2004
DOI: 10.1002/mawe.19950260612
Copyright © 1995 Verlag GmbH & Co. KGaA, Weinheim
Issue
Materialwissenschaft und Werkstofftechnik
Volume 26, Issue 6, pages 342–346, Juni 1995
Additional Information(Show All)
How to CiteAuthor InformationPublication History
How to Cite
Fouda, A. S., Elshafei, A. A., Elasklany, A. H. and Madkour, L. H. (1995), Inhibitory Effect of
some carbazides on corrosion of aluminium in hydrochloric acid and sodium hydroxide
solutions. Mat.-wiss. u. Werkstofftech., 26: 342–346. doi: 10.1002/mawe.19950260612
Author Information
1. 1
Chem. El-Mansoura University, Faculty of Science, Chemistry Department, El-
Mansoura, Egypt
2. 2

5. Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt
Publication History
1. Issue published online: 15 SEP 2004
2. Article first published online: 15 SEP 2004
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Abstract

6. The dissolution of aluminium in hydrochloric acid and sodium hydroxide solutions in the presence of semicarbazide,
thiosemicarbazide and sym.diphenylcarbazide as corrosion inhibitors has been studied using thermometric, weight-loss and
polarization methods. The three methods gave consistent results. The higher inhibition efficiency of these compounds in acidic
than in alkaline madia may be due to the less negative potential of aluminium in hydrochloric acid solution, favouring adsorption
of the additive. The adsorption of these compounds were found to obey Frumkin adsorption isotherm.
Cathodic polarization measurements showed that these compounds are cathodic inhibitors and their adsorption in the double layer
does not change the mechanism of the hydrogen evolution reaction. The results are analysed in terms of both molecular and
cationic adsorption.
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OPAC HELP
Title
INHIBITORY EFFECT OF SOME CARBAZIDES ON CORROSION OF
ALUMINUM IN HYDROCHLORIC-ACID AND SODIUM-HYDROXIDE
SOLUTIONS
Author:
FOUDA AS; MADKOUR LH; ELSHAFEI AA; ELASKLANY AH;
Addresses:
EL MANSOURA UNIV,FAC SCI,DEPT CHEM MANSOURA EGYPT TANTA
UNIV,FAC SCI,DEPT CHEM TANTA EGYPT
Heading Title:
Materialwissenschaft und Werkstofftechnik
issue: 6, volume: 26, year: 1995,
pages: 342 - 346
SICI:
0933-5137 0933-5137(1995)26:6<342:IEOSCO>2.0.ZU;2-P
Source:
ISI
Language:
ENG
Subject:
DERIVATIVES; DISSOLUTION;
Document Type:
Article
Nature:
Serial
Edition:
Science Citation Index Expanded
Citations:
12

8. Reviewed:
Addresses for extracts:
Citation:
A.S. Fouda and others, "INHIBITORY EFFECT OF SOME CARBAZIDES ON
CORROSION OF ALUMINUM IN HYDROCHLORIC-ACID AND SODIUM-
HYDROXIDE SOLUTIONS", Materialwissenschaft und Werkstofftechnik, 26(6),
1995, pp. 342-346
Abstract
The dissolution of aluminium in hydrochloric acid and sodium hydroxide solutions
in the presence of semicarbazide, thiosemicarbazide and sym.diphenylcarbazide
as corrosion inhibitors has been studied using thermometric, weight-loss and
polarization methods. The three methods gave consistent results. The higher
inhibition efficiency of these compounds in acidic than in alkaline madia may be
due to the less negative potential of aluminium in hydrochloric acid solution,
favouring adsorption of the additive. The adsorption of these compounds were
found to obey Frumkin adsorption isotherm. Cathodic polarization measurements
showed that these compounds are cathodic inhibitors and their adsorptionin the
double layer does not change the mechanism of the hydrogen evolution reaction.
The results are analysed in terms of both molecular and cationic adsorption.
ASDD Area Sistemi Dipartimentali e Documentali, Bologna University, Review
Catalogue
Document created on 15/04/15 at 18:31:51
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