Corrosion Inhibition of Two Aluminum Silicon Alloys in 0.5 M HCl Solution by Some Azole Derivatives Using Electrochemical Techniques
- 作者: Abdallah M.1,2, Fouda A.S.1, El-Nagar D.A.1, Alfakeer M.1, Ghoneiim M.M.1
- 
							隶属关系: 
							- Chemistry Department, Faculty of Science
- Chemistry Department, Faculty of Applied Science
 
- 期: 卷 55, 编号 2 (2019)
- 页面: 172-182
- 栏目: Article
- URL: https://journals.rcsi.science/1068-3755/article/view/231137
- DOI: https://doi.org/10.3103/S1068375519020029
- ID: 231137
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The inhibiting action of three derivatives of azole compounds has been investigated for the corrosion of two aluminum-silicon alloys in 0.5 M HCl solution using some electrochemical measurements such as potentiodynamic polarization, electrochemical impedance, and electrochemical frequency modulation. The morphology of the surface was examined by the scanning electron microscopy. It was found that the inhibition efficiency increases with the increase in the concentration of azole compounds. Those compounds acted as mixed inhibitors and their inhibiting effect was revealed through the formation of an adsorbed film, which blocked the active site present on the alloys. The adsorption process follows the Freundlich isotherm. The addition of Si to Al electrode increases in the corrosion protection of the alloys in the following sequence: Alloy II > Alloy I. The inhibition efficiencies obtained via different techniques are consistent with each other.
作者简介
M. Abdallah
Chemistry Department, Faculty of Science; Chemistry Department, Faculty of Applied Science
							编辑信件的主要联系方式.
							Email: metwally555@yahoo.com
				                					                																			                												                	埃及, 							Benha; Makka						
A. Fouda
Chemistry Department, Faculty of Science
														Email: metwally555@yahoo.com
				                					                																			                												                	埃及, 							El-Mansoura						
D. El-Nagar
Chemistry Department, Faculty of Science
														Email: metwally555@yahoo.com
				                					                																			                												                	沙特阿拉伯, 							Hail						
M. Alfakeer
Chemistry Department, Faculty of Science
														Email: metwally555@yahoo.com
				                					                																			                												                	沙特阿拉伯, 							Riyadh						
M. Ghoneiim
Chemistry Department, Faculty of Science
														Email: metwally555@yahoo.com
				                					                																			                												                	埃及, 							Tanta						
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