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7200

INFLUENCE OF CHLORIDE AND HYDROXIDE IONS CONCENTRATIONS ON THE CORROSION BEHAVIOR OF AL AND AL-SI ALLOY

Article

Last updated: 22 Jan 2023

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-

Tags

Chemistry

Abstract

The electrochemical behavior of Al and Al-Si alloy in NaCl and NaOH solutions have been studied in the absence and presence of some amino acids as corrosion inhibitor. Open-circuit measurements showed that both immersion potential (Eim.) and steady state potential (Es.s.) decreased and become more negative as the concentration of NaCl and NaOH increased, while the rate of film thickening independed on the solutions concentrations. Cyclic anodic polarization curves indicated a small hysteresis loop raising the possibility of pitting as well as crevices corrosion. The studies revealed that both glycine and valine adsorbed on the electrode surface and inhibited both anodic and cathodic reactions. Due to the electron donating effect of methyl group in valine, valine was more effective in inhibition than glycine.

DOI

10.21608/absb.2011.7200

Keywords

Aluminum, Aluminum alloys, Corrosion, inhibition, Polarization

Authors

First Name

A.

Last Name

IBRAHIM

MiddleName

S.

Affiliation

Chemistry Department, Faculty of Science (Girls), Al-Azhar University, Nasr City, Cairo, Egypt

Email

-

City

-

Orcid

-

First Name

W.

Last Name

GHANEM

MiddleName

A.

Affiliation

Central Metallurgical Research and Development Institute (CMRDI).Tepen, Cairo, Egypt

Email

-

City

-

Orcid

-

First Name

W.

Last Name

HUSSIEN

MiddleName

A.

Affiliation

Central Metallurgical Research and Development Institute (CMRDI).Tepen, Cairo, Egypt

Email

-

City

-

Orcid

-

First Name

N.

Last Name

SHEHATA

MiddleName

K.

Affiliation

Chemistry Department, Faculty of Science (Girls), Al-Azhar University, Nasr City, Cairo, Egypt

Email

-

City

-

Orcid

-

Volume

23

Article Issue

Issue 1-A

Related Issue

1367

Issue Date

2012-06-01

Receive Date

2011-02-01

Publish Date

2012-06-01

Page Start

151

Page End

163

Print ISSN

1110-2535

Online ISSN

2636-3305

Article File

ABSB_Volume 23_Issue Issue 1-A_Pages 151-163.pdf

PDF . 1.8MB

Link

https://absb.journals.ekb.eg/article_7200.html

Detail API

https://absb.journals.ekb.eg/service?article_code=7200

Order

11

Type

Original Article

Type Code

520

Publication Type

Journal

Publication Title

Al-Azhar Bulletin of Science

Publication Link

https://absb.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023