Influence of the alkyl chain on the protective effects of 1,2,3-benzotriazole towards copper corrosion. Part ii: formation and characterization of the protective films

Frignani, A.; Fonsati, M.; Monticelli, C.; Brunoro, G.

doi:10.1016/s0010-938x(98)00192-9

Cited by 54 publications

(54 citation statements)

References 32 publications

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“…The electrochemical quartz crystal microbalance ͑EQCM͒ technique has been employed to study the kinetics of forming multilayers of BTA over time scales of the order of hours. 40,41 Unfortunately, the resolvable time scale of the EQCM, about 0.1 s, 42 limits the usefulness of this technique for studying the millisecond time scale. Hence, we employed a theoretical approach using our experimental chronoamperometric data to determine the rates of dissolution of copper from bare copper sites and from the sites that are occupied by BTA and then used these data to calculate the kinetics of adsorption of BTA onto copper.…”

Section: Theoretical Analysismentioning

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: Theoretical Analysismentioning

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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“…In both cases, the presence of a sufficiently long alkyl chain improves the inhibiting action of the base molecule because the van der Waals interactions among the long aliphatic chains can enhance the formation of a thicker, more compact, less defective, more hydrophobic and therefore more protective inhibitor layer [30,[34][35][36]. These positive effects are the greater the longer the chain, at least up to 6 carbon atoms.…”

Section: Discussionmentioning

confidence: 99%

“…Good results were also obtained when the hydrogen atom in position 5 of the aromatic ring of benzotriazole was substituted by a methyl or a short alkyl chain. Therefore, in our laboratory further investigations were carried out on a series of 5-alkyl-derivatives of BTA as inhibitors of iron acid corrosion [28] and copper corrosion [29,30]. This paper shows the improved inhibiting properties of BTA molecule achieved when an aliphatic chain is introduced in the position 5 of the aromatic moiety.…”

Section: Introductionmentioning

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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“…2016. Rad je dostupan na sajtu: www.idk.org.rs/casopis Takođe i sulfatna kisela sredina spada u veoma agresivne medije te je veoma zanimljiva za proučavanje [20,21].…”

Section: Uvodunclassified

Compounds from the imidazole group as copper corrosion inhibitor in acidic sodium sulphate solution

Simonović¹,

Radovanović²,

Mihajlovic-Petrovic³

et al. 2017

Zas Mat

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Influence of the alkyl chain on the protective effects of 1,2,3-benzotriazole towards copper corrosion. Part ii: formation and characterization of the protective films

Cited by 54 publications

References 32 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

Compounds from the imidazole group as copper corrosion inhibitor in acidic sodium sulphate solution

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