Corrosion Inhibition of Zn in a 0.5 M HCl Solution by Ailanthus Altissima Extract
| Autor: | Abd El-Aziz S. Fouda, M M K Darwish, N M Arman, S.M. Rashwan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Ailanthus altissima
EIS HE biology 010405 organic chemistry Chemistry EFM 02 engineering and technology corrosion inhibition HCl PP 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences 0104 chemical sciences Corrosion ailanthus altissima extract Electrochemistry Zn surface morphology WL 0210 nano-technology Nuclear chemistry |
| Zdroj: | Portugaliae Electrochimica Acta v.36 n.5 2018 Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação instacron:RCAAP Portugaliae Electrochimica Acta, Volume: 36, Issue: 5, Pages: 309-323, Published: SEP 2018 |
| ISSN: | 1647-1571 |
| Popis: | The inhibiting effect of Ailanthus altissima aqueous extract, as a corrosion inhibitor for Zn in a 0.5 M HCl solution, has been evaluated by weight loss (WL), hydrogen evolution (HE), potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. Obtained results showed that this extract offered good protection against Zn corrosion, and exhibited high inhibition efficiencies. The IE was found to increase with an increasing extract dose. Results revealed that this extract acted as a mixed-type inhibitor, and adsorbed onto the Zn surface following Temkin isotherm. Obtained results were justified from the study of surface morphology. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|