Copper corrosion in distribution systems: evaluation of a homogeneous Cu2O film and a natural corrosion scale as corrosion inhibitors

2000 ◽  
Vol 42 (10) ◽  
pp. 1801-1822 ◽  
Author(s):  
Abhijit Palit ◽  
Simo O Pehkonen
Keyword(s):  
Distribution Systems ◽  
Corrosion Inhibitors ◽  
Copper Corrosion ◽  
Corrosion Scale ◽  
Cu2o Film ◽  
Natural Corrosion

Non-Toxic Copper Corrosion Inhibitors in Different Aggressive Media

Copper ◽  
2007 ◽  
pp. 119-124
Author(s):  
E. Stupniek-Lisac ◽  
Helena Otmai
Keyword(s):  
Corrosion Inhibitors ◽  
Copper Corrosion

scholarly journals Ibuprofen as a corrosion inhibitor for copper in synthetic acid rain solution

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Zaklina Z. Tasić ◽  
Marija B. Petrović Mihajlović ◽  
Ana T. Simonović ◽  
Milan B. Radovanović ◽  
Milan M. Antonijević
Keyword(s):  
Acid Rain ◽  
Corrosion Inhibitor ◽  
Quantum Chemical ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Theoretical Calculations ◽  
Pharmaceutical Compounds ◽  
Copper Corrosion ◽  
A Value ◽  
Synthetic Acid

Abstract It is known that if unused drugs are improperly disposed, they can pollute the environment. Furthermore, researchers are still trying to find an environmentally friendly corrosion inhibitor. These factors lead to the possible application of unused pharmaceutical compounds as corrosion inhibitors. The feasibility of an anti-inflammatory, analgesic and antipyretic drug, ibuprofen, was evaluated as a potential copper corrosion inhibitor in synthetic acid rain solution. This investigation was performed by applying electrochemical and weight loss measurements and quantum chemical calculations. The results obtained by these techniques revealed the ability of ibuprofen to protect copper from corrosion. The inhibition efficiency of ibuprofen rises with increase in its concentration and can reach a value of 97.3%. The results of surface analysis of treated coupons by scanning electron microscopy and theoretical calculations are consistent with the experimental results.

scholarly journals Water Pipes Corrosion Inhibitors for Q235 Steel in Hydrochloric Acid Medium Using Spiropyrazoles Derivatives

Coatings ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 167 ◽  
Author(s):  
A. M. Eldesoky ◽  
Hala. M. Hassan ◽  
Abdu Subaihi ◽  
Abeer El Shahawy ◽  
Thoraya A. Farghaly
Keyword(s):  
Distribution Systems ◽  
Corrosion Inhibitors ◽  
Sea Water ◽  
Electrochemical Impedance ◽  
Binding Mode ◽  
Outcome Data ◽  
Water Desalination ◽  
Q235 Steel ◽  
Water Pipes ◽  
Tafel Polarization

Water pipes and drinking water quality deterioration in distribution systems and sea water desalination impose the use of corrosion inhibitors. The protective effect of spiropyrazole derivatives against Q235 steel and its adsorption performance were examined in solution of 1 M HCl utilizing TP (Tafel polarization), electrochemical frequency modulation (EFM), and electrochemical impedance spectroscopy (EIS) tests. The outcome data from hindrance efficiency rise with the dose of inhibitor. The orders of %IE of spiropyrazole derivatives are given: (1) > (2) > (3).It was noted that the values of EHOMO and ELUMO dropping in order run parallel to the improvement in %IE, which support the preceding order. EIS spectra exhibited one capacitive loop and approve the protective ability. Molecular docking was utilized to get a full picture on the binding mode among spiropyrazoles derivatives and the receptor of 3tt8-hormone of crystal structure examination of Cu human insulin derivative. The morphology of protected Q235 steel was evaluated by checking electron magnifying instrument innovation with energy dispersive X-beam spectroscopy (SEM–EDX).

scholarly journals New inhibitors for copper corrosion

2001 ◽  
Vol 73 (12) ◽  
pp. 1861-1869 ◽  
Author(s):  
Gy. Vastag ◽  
E. Szöcs ◽  
A. Shaban ◽  
E. Kálmán
Keyword(s):  
Scanning Probe Microscopy ◽  
Corrosion Inhibitors ◽  
Quartz Crystal ◽  
High Sensitivity ◽  
Scanning Probe ◽  
Copper Corrosion ◽  
Thiazole Derivatives ◽  
Single Crystal Electrode ◽  
Copper Corrosion Inhibition

The study of the effectiveness of several potential copper corrosion inhibitors in acidic media was studied. The investigated thiazole derivative functional groups contain heterocyclic atoms such as nitrogen, sulfur, and oxygen. Thiazole derivatives, 5-benzylidene-2,4-dioxotetrahydro-1,3-thiazole (BDT) 5-(4¢-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole (IPBDT), 5-(3¢-thenylidene)-2,4-dioxotetrahydro-1,3-thiazole (TDT), and 5-(3¢,4¢-dimetoxybenzylidene)-2,4-dioxotetrahydro-1,3-thiazole (MBDT) were tested for copper corrosion inhibition properties. The electrolyte solution was 0.1 M Na2SO4. In situ information on corrosion and inhibition processes can be obtained using different techniques. Electrochemical measurements (EIS), in situ scanning probe microscopy (SPM), in addition to quartz crystal microbalance (QCM) measurements were applied. Those methods are very useful owing to their high sensitivity and resolution. Dynamic STM and AFM measurements on Cu(111) single-crystal electrode with and without the addition of some inhibitors were performed. The presence of the isopropyl group in the case of IPBDT produced far better protection against copper corrosion in acidic sulfate-containing media than the rest of the derivatives.

Investigations on Copper Corrosion Inhibitors

1991 ◽  
Vol 20-28 ◽  
pp. 2895-2900
Author(s):  
O.P. Agrawal ◽  
I.K. Bhatnagar ◽  
Virendra Kumar
Keyword(s):  
Corrosion Inhibitors ◽  
Copper Corrosion
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