Benzotriazole as Corrosion Inhibitor for Copper II. Acid NaCl Solutions

Mansfeld, F.; Smith, Tony

doi:10.5006/0010-9312-29.3.105

Cited by 107 publications

(47 citation statements)

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“…[19][20][21][22][23][24] BTA has been reported to adsorb on copper at low pH, lower potentials, and low adsorption densities, while polymerized Cu͑I͒BTA multilayers appear at high pH, higher potentials, and higher adsorption densities. 14,20,[25][26][27][28][29][30][31] Adsorption has been reported on both oxide-free copper surfaces and Cu 2 O.…”

Section: Chronoamperometry Experimentsmentioning

confidence: 99%

Copper CMP Modeling: Millisecond Scale Adsorption Kinetics of BTA in Glycine-Containing Solutions at pH 4

Choi¹,

Tripathi²,

Dornfeld³

et al. 2010

J. Electrochem. Soc.

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Millisecond scale benzotriazole (BTA) adsorption kinetics in acidic aqueous solution containing 0.01M glycine and 0.01M BTA have been investigated. Chronoamperometry was used to measure current densities on the surface of a micro-copper electrode in pH 4 aqueous solutions containing 0.01M glycine with or without 0.01M BTA. In the presence of BTA the current density decreased as the inverse of the square root of time for a few seconds due to adsorption of BTA. At potentials above 0.4V saturated calomel electrode the current leveled off after a second or so due to the formation of a Cu(I)BTA monolayer on the copper surface. Based on these data a governing equation was constructed and solved to determine the initial kinetics of BTA adsorption. Analysis shows that material removal during copper chemical mechanical planarization (CMP) in this slurry chemistry occurs mostly by direct dissolution of copper species into the aqueous solution rather than mechanical removal of oxidized or pure copper species and that each interaction between a pad asperity and a given site on the copper removes only a small fraction of the Cu(I)BTA species present at that site.

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Section: Chronoamperometry Experimentsmentioning

confidence: 99%

Copper CMP Modeling: Millisecond Scale Adsorption Kinetics of BTA in Glycine-Containing Solutions at pH 4

Choi¹,

Tripathi²,

Dornfeld³

et al. 2010

J. Electrochem. Soc.

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“…At a higher concentration of 10 -4 M, both compounds reduced the cathodic currents by more than two orders of magnitude (Figure 4). The lower homologues (BTA and C1) simply hindered the formation of the cathodic hump ascribed to the presence of adsorbed intermediates formed during O 2 reduction [31,32] up to 10 -4 M concentration. They attained one order of magnitude reduction in the cathodic currents at the higher concentration of 10 -3 M ( Figure 5).…”

Section: ) Coppermentioning

confidence: 99%

Alkyl-benzotriazole derivatives as inhibitors of iron and copper corrosion

Trabanelli¹,

Frignani

Monticelli³

et al. 2015

Int. J. Corros. Scale Inhib.

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5-Alkyl derivatives of benzotriazole (1-12 carbon atom long alkyl chain) were tested as inhibitors of pure iron corrosion in sulphuric or hydrochloric acid at 25°C and pure copper corrosion in acidic sulphate and saline solutions at 30°C. This series of compounds was more efficient in contrasting copper than iron corrosion and, generally, the longer the alkyl chain the higher the inhibiting performances and the longer the persistency of the inhibiting action. However, due to a decrease in the solubility, the maximum inhibiting effects were produced by the hexyl derivative. In the case of iron, these compounds were more efficient in the hydrochloric acid solution than in the sulphuric one, while for copper they were more effective in the acidic sulphate solution than in the acidic chloride solution. The higher inhibiting effects for copper can be justified by the mode of BTA adsorption, that consists in chemisorption, instead of physisorption occurring on iron.

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“…Benzene three azoles (BTA), tiourea, hydrazine sulfate, DS-3 and EDTA, used to be very effective inhibitors in acid solutions (Mansfeld, Smith , 1973;Weisstuh, Lange, 1971;Kabasakaloglu at all, 2002;Miller, 1969;Abrantes at all, 1984). Inhibitor DS-3 is the inhibitor corrosion of iron and steel in solutions chloro-H-acid, the degree of inhibition of 93%, while HS was a good inhibitor corrosion inhibitor of steel and copper in nitric acid and alkaline solutions, where the degree of inhibition achieved value of 73% to 100% (Abrantes at all, 1984).…”

Section: Literature Review Of Previous Studies Of Copper Corrosion Inmentioning

confidence: 99%

Protection of Copper and its Alloys Using Corrosion Inhibitor-Literature Review

Tomić

Pavlović

Jotanović

et al. 2010

QOL

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A review of the literature dealing with the electrochemical corrosion of copper and its alloys with purpose to find the most suitable inhibitor for its protection has been done. According to their chemical composition of corrosion inhibitors are divided into inorganic and organic inhibitors. Inhibition of alloying metals are possible (such as the addition of arsenic alloy components in brass, preventing its unzincanization). The paper reviews the theoretical basis of application of inhibitors to protect metals from corrosion as well as an overview of current research application of inhibitors to protect copper and copper alloys. Benzotriazole (BTA) is most often used corrosion inhibitor for copper and its alloys in acidic and alkaline solution, because of its high inhibition efficiency. The lowest concentration of inhibitor for protection of copper in various solutions was 0.05%, and for the protection of copper in contact with steel is 0.1%. On the surface of copper and brass BTA forms a protective Cu-BTA film. However, BTA is like many other synthesized organic inhibitors is very toxic and if used in very small concentrations. It turned out that the AETD, AETDA and PTAT good corrosion inhibitors of copper mixed type with the efficiency of inhibition increases with concentration. Due to the adverse effects on the environment, health and other bodies in recent times the focus of research is transferred to the inhibiting action of biological molecules or mixtures of natural compounds called "Green inhibitors".

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Benzotriazole as Corrosion Inhibitor for Copper II. Acid NaCl Solutions

Cited by 107 publications

References 0 publications

Copper CMP Modeling: Millisecond Scale Adsorption Kinetics of BTA in Glycine-Containing Solutions at pH 4

Copper CMP Modeling: Millisecond Scale Adsorption Kinetics of BTA in Glycine-Containing Solutions at pH 4

Alkyl-benzotriazole derivatives as inhibitors of iron and copper corrosion

Protection of Copper and its Alloys Using Corrosion Inhibitor-Literature Review

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