RETRACTED ARTICLE: Comparative Studies on Water and Ethanol Extract of Spondias mombin as Green Approach for Effective Acid Corrosion Mitigation of Mild Steel in Chemical Processing Industries

Okuma, Silas Oseme; Ebijuwa, Marvelous Igho; Ofuyekpone, Okiemute Dickson; Nwaeju, Cynthia Chinasa

doi:10.1007/s42250-023-00654-y

Chemistry Africa

2023

DOI: 10.1007/s42250-023-00654-y

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RETRACTED ARTICLE: Comparative Studies on Water and Ethanol Extract of Spondias mombin as Green Approach for Effective Acid Corrosion Mitigation of Mild Steel in Chemical Processing Industries

Silas Oseme Okuma¹,

Marvelous Igho Ebijuwa

Okiemute Dickson Ofuyekpone

et al.

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2024

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Assessment of Corrosion Resistance Potentials of Welded and Tempered UNS G10400 Carbon Steel in a Seawater Environment

Okuma,

Oreko

2024

Chemistry Africa

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Welded joints sometimes exhibit poor corrosion resistance, due to variation in chemical composition at the weld surface or Heat Affected Zone (HAZ), induced stress and the microstructure formation. There is a need to enhance welds corrosion resistance and microstructural properties of such joints through post weld tempering (PWT). In this study, PWT effect on the corrosion resistance and microstructure properties of UNS G10400 carbon steel was investigated. The UNS G10400 samples, were cut to the desired dimensions, welded by means of electric metal arc welding process and subjected to PWT, at 550ºC, 650ºC, and 700ºC, for 1 h, respectively. The samples were immersed in seawater environment and its corrosion resistance and microstructure properties were then evaluated, using gravimetric technique, Open Circuit Potential (OCP), Potentiodynamic Polarization (PDP), Electrochemical Impedance Spectroscopy (EIS) and Scanning Electron Microscope (SEM)/ Energy-Dispersive X-ray Spectroscopy (EDX), respectively. The ndings show that the post-weld tempered (PWT) samples exhibited higher corrosion resistance compared to the as-welded samples. The corrosion rate values are 0.1351, 0.06331, 0.06271 and 0.01578mm/year for as-welded, PWT-550 0 C, PWT-650 0 C and PWT-700 0 C samples respectively. The SEM/EDX images of PWT samples revealed an increased in grain size, forming a tempered martensite. These results are due to re-crystallization and grain growth resulting from post-weld tempering. Therefore, an appropriate post weld tempering for UNS G10400 carbon steel welded joints is recommended for advanced industrial applications.

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Assessment of Corrosion Resistance Potentials of Welded and Tempered UNS G10400 Carbon Steel in a Seawater Environment

Okuma,

Oreko

2024

Chemistry Africa

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RETRACTED ARTICLE: Comparative Studies on Water and Ethanol Extract of Spondias mombin as Green Approach for Effective Acid Corrosion Mitigation of Mild Steel in Chemical Processing Industries

Cited by 1 publication

References 28 publications

Assessment of Corrosion Resistance Potentials of Welded and Tempered UNS G10400 Carbon Steel in a Seawater Environment

Assessment of Corrosion Resistance Potentials of Welded and Tempered UNS G10400 Carbon Steel in a Seawater Environment

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