Synergistic effect of L-cysteine and iodide ions during electrodeposition of nanocrystalline nickel from a Watts bath

2022 ◽  
pp. 1-13
Author(s):  
Nobl Fouad El Boraei
Keyword(s):  
Synergistic Effect ◽  
Nanocrystalline Nickel ◽  
Iodide Ions ◽  
Watts Bath

Synergistic effect of iodide ions and bark resin of Schinus molle for the corrosion inhibition of API5L X70 pipeline steel in H 2 SO 4

2020 ◽  
Vol 71 (8) ◽  
pp. 1276-1288
Author(s):  
Mounir Djellab ◽  
Hamza Bentrah ◽  
Abdelouahad Chala ◽  
Hicham Taoui ◽  
Slimane Kherief ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Corrosion Inhibition ◽  
Pipeline Steel ◽  
X70 Pipeline Steel ◽  
Iodide Ions ◽  
Schinus Molle

Effect of Pulse Electrodeposition on Properties of Nanocrystalline Nickel Coatings

2013 ◽  
Vol 829 ◽  
pp. 410-415 ◽  
Author(s):  
Mohammad Reza Sanaeian ◽  
Farzad Nasirpouri
Keyword(s):  
Growth Direction ◽  
Nanocrystalline Nickel ◽  
Corrosion Resistant ◽  
Nickel Coatings ◽  
Corrosion Evaluation ◽  
Watts Bath ◽  
Naoh Solution ◽  
Hardness Values ◽  
Pc Method ◽  
Deposition Conditions

In this work, nanocrystalline nickel coatings were electrodeposited from a Watts bath using direct (DC) and pulsed (PC) current. Effect of deposition conditions on the morphology, hardness, grain size, surface roughness and corrosion resistance of nickel coatings were investigated. Ni films deposited by PC method exhibited greater hardness values and smaller crystallite size compared to those deposited by DC method. A preferential crystallographic orientation or texture was found in the nickel films depending upon the electrodeposition pulse shape, as it is polycrystalline in the DC electrodeposited films, while exhibit <111> crystallographic growth direction for PC method. Corrosion evaluation results showed that the PC electrodeposited nanocrystalline Ni films have higher corrosion resistant compared to those deposited with the DC method in 2 mol/liter NaOH solution.

Corrosion inhibition and adsorption behavior of triazoles derivatives on mild steel in 1 M H3PO4 and synergistic effect of iodide ions

2013 ◽  
Vol 41 (4) ◽  
pp. 1907-1923 ◽  
Author(s):  
M. Abouchane ◽  
M. El Bakri ◽  
R. Touir ◽  
A. Rochdi ◽  
O. Elkhattabi ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Adsorption Behavior ◽  
Iodide Ions

Anticorrosive properties of theophylline on aluminium corrosion in 1M HCl: Experimental, Computational assessment and synergistic effect iodide ions

2021 ◽  
Vol 11 ◽  
Author(s):  
Tigori Mougo André ◽  
Beda Reginald Henriette Blanche ◽  
Niamien Paulin Marius ◽  
Diabaté Donourou
Keyword(s):  
Density Functional Theory ◽  
Synergistic Effect ◽  
Density Functional ◽  
Inhibition Efficiency ◽  
Quantitative Structure ◽  
Structure Property ◽  
Functional Theory ◽  
Quantitative Structure Property Relationship ◽  
Iodide Ions ◽  
Structure Property Relationship

Aims : The aim of this study is to show the anticorrosive properties of 1,3-dimethyl-7H-purine-2,6-dione on aluminium corrosion in 1M hydrochloric acid and to study the synergy effect between iodide ions and this molecule. Background: Research of eco-friendly, low toxic and biodegradable corrosion inhibitors capable of protecting metals in order to support industrialists who spend large sums of money to replace their corroded equipment. Objective: The main objective is to study the anticorrosive properties of theophylline on aluminium corrosion in 1M HCl. Methods: The anticorrosive properties study of theophylline on aluminium corrosion in 1M HCl was evaluated using mass loss, Density Functional Theory at B3LYP/6-31G (d) and Quantitative Structure-Property Relationship methods. Results: The results obtained show that theophylline inhibition efficiency increases with concentration but decreases with increasing temperature with a maximum value of 88% for 5.10-3M at T = 298 K. The result from absorption isotherms reveals that theophylline adsorbs to the aluminium surface according to the modified Langmuir isotherm. Adejo Ekwenshi's isotherm has shown that the molecule adsorption on aluminium is essentially of a physical nature. Thermodynamic adsorption and activation parameters were calculated and analyzed. A synergistic effect between the molecule studied and the iodide ions was found. Furthermore, global and local reactivity were analyzed through density functional theory calculations. Quantitative structure-property relationship methods model has been permitted to correlate experimental and theoretical inhibition efficiencies. Conclusion: Theophylline is an excellent aluminum inhibitor corrosion in the studied solution. Theoretical results were in agreement with experimental data. Other: Finally to find the best set of parameters for modeling the inhibition efficiency.

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