Investigations on Copper Corrosion Inhibitors

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.

Download Full-text

New inhibitors for copper corrosion

Pure and Applied Chemistry ◽

10.1351/pac200173121861 ◽

2001 ◽

Vol 73 (12) ◽

pp. 1861-1869 ◽

Cited By ~ 33

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.

Download Full-text

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

Corrosion Science ◽

10.1016/s0010-938x(00)00024-x ◽

2000 ◽

Vol 42 (10) ◽

pp. 1801-1822 ◽

Cited By ~ 38

Author(s):

Abhijit Palit ◽

Simo O Pehkonen

Keyword(s):

Distribution Systems ◽

Corrosion Inhibitors ◽

Copper Corrosion ◽

Corrosion Scale ◽

Cu2o Film ◽

Natural Corrosion

Download Full-text

Review of Copper Atmospheric Corrosion in H2S

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.548-549.177 ◽

2014 ◽

Vol 548-549 ◽

pp. 177-181

Author(s):

Ping Wang ◽

Zhao Hui Yin ◽

Han Tao Ren ◽

Song Xu ◽

Dong Wei Ma

Keyword(s):

Corrosion Resistance ◽

Corrosion Behavior ◽

Atmospheric Corrosion ◽

Corrosion Inhibitors ◽

External Factors ◽

Corrosion Mechanism ◽

Corrosive Environment ◽

Copper Corrosion ◽

Environment Factors ◽

The Impact

The losses due to copper corrosion in H2S atmospheric corrosion have attracted much focus. It’s important to improve copper corrosion resistance that the corrosion law, corrosion mechanism and characteristics were studied in H2S environment. This paper reviewed the corrosion behavior of copper, analyzed the impact of environment factors and corrosion analysis tools. Through evaluating and improving corrosion by external factors, including improving corrosive environment, using coating protection and adding corrosion inhibitors, appropriate corrosion measures were taken to extend the life of the equipment.

Download Full-text

2021 F.N. Speller Award Lecture: CORROSION MECHANISMS OF STEEL AND COPPER IN ENGINEERING APPLICATIONS

CORROSION ◽

10.5006/3916 ◽

2021 ◽

Author(s):

Jose M Bastidas

Keyword(s):

Corrosion Inhibitors ◽

Cementitious Materials ◽

Copper Corrosion ◽

Engineering Applications ◽

Main Research ◽

Structural Applications ◽

Protection Mechanisms ◽

Copper Tubing ◽

Corrosion Mechanisms ◽

Air Conditioning Systems

The main research lines of the scientific career of the author are herein, exemplified including corrosion and protection mechanisms of steel in different environments, and copper corrosion in climate systems. Stainless steel (SS) due to its high corrosion resistance is a material widely used for many engineering applications. Impedance measurements were performed on polarized at the pitting region AISI 304 SS in environment containing chloride at 25 and 60 ºC. The transfer function was analyzed indicating instability system, corroborating results obtained using the Kramers-Kronig transforms. Steel reinforcement has been studied for structural applications in civil engineering and architecture using cementitious materials, alkaline activated fly ash (AAFA), alternative to the ordinary Portland cement (OPC). The main compounds used as corrosion inhibitors in concrete were included. Carbon steel embedded in OPC mortar was tested in the presence of phosphates as corrosion inhibitors. An organic lacquer was applied to tinplate with titanium-passivation treatment and, in general, acceptable and comparable behavior was obtained to conventional chromium-passivated lacquered tinplate. Copper is also a material used in many engineering applications. Ant-nest corrosion of copper tubing in air-conditioning systems has been reported. The copper corrosion rate occasioned by carboxylic acids, formic, acetic, propionic and butyric, was included.

Download Full-text