Quantum chemical studies on inhibition effect of amino acids and hydroxy carboxylic acids on pitting corrosion of aluminium alloy 7075 in NaCl solution

2005 ◽  
Vol 725 (1-3) ◽  
pp. 215-221 ◽  
Author(s):  
A. Yurt ◽  
G. Bereket ◽  
C. Ogretir
Keyword(s):  
Amino Acids ◽  
Aluminium Alloy ◽  
Carboxylic Acids ◽  
Pitting Corrosion ◽  
Quantum Chemical ◽  
Nacl Solution ◽  
Inhibition Effect ◽  
Chemical Studies ◽  
Quantum Chemical Studies ◽  
Hydroxy Carboxylic Acids

Spectroscopic, Electrochemical and Quantum Chemical Studies for Adsorption Action of Polyethylene Oxide on Copper Surface in NaCl Solution

2020 ◽  
Vol 234 (11-12) ◽  
pp. 1835-1851
Author(s):  
Mahmoud N. El-Haddad
Keyword(s):  
Polyethylene Oxide ◽  
Quantum Chemical ◽  
Absorption Spectrometry ◽  
Copper Surface ◽  
Protective Film ◽  
Nacl Solution ◽  
Chemical Studies ◽  
Langmuir Isotherm Model ◽  
Quantum Chemical Studies ◽  
Uv Visible

AbstractThe adsorption action of polyethylene oxide (PEO) on copper surface in 3.5 wt.% NaCl solution was tested using electrochemical frequency modulation (EFM), atomic absorption spectrometry (AAS), UV- visible spectrometry and the morphology of copper surface was investigated by attenuated total reflectance spectroscopy (ATR-FTIR), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) techniques. Results obtained show that PEO is effective in preventing the corrosion of copper in NaCl solution. The adsorption of PEO onto copper surface was found to follow Langmuir isotherm model. ATR-FTIR, SEM and EDX spectroscopy techniques confirmed the adsorption of protective film of PEO on copper surface. Further, quantum chemical calculations were in agreement with inhibition efficiency (%I) of PEO that were obtained experimentally.

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