Corrosion inhibition of mild steel in hydrochloric acid solution using fatty acid derivatives

Yeong Shoot Kian, . and Mariyam Jameelah Ghazali, . and Wan Md Zin Wan Yunus, . and Siti Mariam Mohd Nor, . and Mohd N. K., . and Zainab Idris, . and Nor Azowa Ibrahim, . Corrosion inhibition of mild steel in hydrochloric acid solution using fatty acid derivatives. pp. 97-109. ISSN 1511-2780

The inhibitive actions of fatty acid derivatives namely palmitate hydrazide (PH) N-ethylidene palmitate hydrazide (EPH) and N-phenylmethylidene palmitate hydrazide (PPH) on mild steel in 1 M hydrochloric acid were investigated using open circuit potential linear polarisation and electrochemical impedance spectroscopy techniques. It was observed that the percentage of inhibition efficiency (·) increased with increasing concentrations of inhibitor and temperature of test medium. The maximum · approaches 85 in the presence of 200 mg litre-1 of inhibitors EPH and PPH at 308 1K. The inhibitor efficiencies were found to be in the following order: PPHEPHPH. The adsorption of these inhibitors on mild steel surface obeys Langmuir adsorption isotherm. They act as mixed-type inhibitors. Scanning electron microscopy-energy dispersive X-ray (SEM-EDX) was also carried out on polished mild steel coupons and those immersed in the test medium with the absence and presence of 200 mg litre-1 of the inhibitors studied.

Full text available from: Official URL: http://jopr.mpob.gov.my/corrosion-inhibition-of-mi...

Abstract

The inhibitive actions of fatty acid derivatives namely palmitate hydrazide (PH) N-ethylidene palmitate hydrazide (EPH) and N-phenylmethylidene palmitate hydrazide (PPH) on mild steel in 1 M hydrochloric acid were investigated using open circuit potential linear polarisation and electrochemical impedance spectroscopy techniques. It was observed that the percentage of inhibition efficiency (·) increased with increasing concentrations of inhibitor and temperature of test medium. The maximum · approaches 85 in the presence of 200 mg litre-1 of inhibitors EPH and PPH at 308 1K. The inhibitor efficiencies were found to be in the following order: PPHEPHPH. The adsorption of these inhibitors on mild steel surface obeys Langmuir adsorption isotherm. They act as mixed-type inhibitors. Scanning electron microscopy-energy dispersive X-ray (SEM-EDX) was also carried out on polished mild steel coupons and those immersed in the test medium with the absence and presence of 200 mg litre-1 of the inhibitors studied.

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Item Type:	Article
AGROVOC Term:	Palm oils
AGROVOC Term:	Corrosion
AGROVOC Term:	Inhibition
AGROVOC Term:	Palmitic acid
AGROVOC Term:	Adsorption
AGROVOC Term:	Hydrochloric acid
AGROVOC Term:	Fatty acids
AGROVOC Term:	Physicochemical properties
AGROVOC Term:	Chemical structure
AGROVOC Term:	Scanning microscopy
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/24255

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