Inhibition of dezincification of 70-30 brass by aminoalkyl mercaptotriazoles

M. A. Quraishi; I. H. Farooqi; P. A. Saini

doi:10.1179/000705900101501038

Inhibition of dezincification of 70-30 brass by aminoalkyl mercaptotriazoles

M. A. Quraishi^*, I. H. Farooqi, P. A. Saini

^*Corresponding author for this work

Interdisciplinary Research Center for Advanced Materials

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Corrosion inhibition efficiencies of triazole derivatives for 70-30 brass in water containing 3% NaCl have been evaluated by means of weight loss, electrochemical polarization, and impedance techniques. The triazole derivatives, namely aminomethyl mercaptotriazole (AMMT), aminoethyl mercaptotriazole (AEMT), and aminopropyl mercaptotriazole (APMT), gave inhibition efficiencies in the order APMT (94.5%)>AEMT (93.6%)>AMMT (91.5%). Nyquist plots showed Warburg impedance, i.e. the reaction was under diffusion control. The inhibition efficiencies of the triazoles did not drop under dynamic flow conditions. Solution analysis showed selective dissolution of zinc compared with copper. The lowest concentration of zinc, achieved in the tests with the optimum inhibitor addition, was 0.35 mg L^-1.

Original language	English
Pages (from-to)	78-80
Number of pages	3
Journal	British Corrosion Journal
Volume	35
Issue number	1
DOIs	https://doi.org/10.1179/000705900101501038
State	Published - 2000

ASJC Scopus subject areas

General Materials Science
Metals and Alloys

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title = "Inhibition of dezincification of 70-30 brass by aminoalkyl mercaptotriazoles",

abstract = "Corrosion inhibition efficiencies of triazole derivatives for 70-30 brass in water containing 3% NaCl have been evaluated by means of weight loss, electrochemical polarization, and impedance techniques. The triazole derivatives, namely aminomethyl mercaptotriazole (AMMT), aminoethyl mercaptotriazole (AEMT), and aminopropyl mercaptotriazole (APMT), gave inhibition efficiencies in the order APMT (94.5%)>AEMT (93.6%)>AMMT (91.5%). Nyquist plots showed Warburg impedance, i.e. the reaction was under diffusion control. The inhibition efficiencies of the triazoles did not drop under dynamic flow conditions. Solution analysis showed selective dissolution of zinc compared with copper. The lowest concentration of zinc, achieved in the tests with the optimum inhibitor addition, was 0.35 mg L-1.",

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T1 - Inhibition of dezincification of 70-30 brass by aminoalkyl mercaptotriazoles

AU - Quraishi, M. A.

AU - Farooqi, I. H.

AU - Saini, P. A.

PY - 2000

Y1 - 2000

N2 - Corrosion inhibition efficiencies of triazole derivatives for 70-30 brass in water containing 3% NaCl have been evaluated by means of weight loss, electrochemical polarization, and impedance techniques. The triazole derivatives, namely aminomethyl mercaptotriazole (AMMT), aminoethyl mercaptotriazole (AEMT), and aminopropyl mercaptotriazole (APMT), gave inhibition efficiencies in the order APMT (94.5%)>AEMT (93.6%)>AMMT (91.5%). Nyquist plots showed Warburg impedance, i.e. the reaction was under diffusion control. The inhibition efficiencies of the triazoles did not drop under dynamic flow conditions. Solution analysis showed selective dissolution of zinc compared with copper. The lowest concentration of zinc, achieved in the tests with the optimum inhibitor addition, was 0.35 mg L-1.

AB - Corrosion inhibition efficiencies of triazole derivatives for 70-30 brass in water containing 3% NaCl have been evaluated by means of weight loss, electrochemical polarization, and impedance techniques. The triazole derivatives, namely aminomethyl mercaptotriazole (AMMT), aminoethyl mercaptotriazole (AEMT), and aminopropyl mercaptotriazole (APMT), gave inhibition efficiencies in the order APMT (94.5%)>AEMT (93.6%)>AMMT (91.5%). Nyquist plots showed Warburg impedance, i.e. the reaction was under diffusion control. The inhibition efficiencies of the triazoles did not drop under dynamic flow conditions. Solution analysis showed selective dissolution of zinc compared with copper. The lowest concentration of zinc, achieved in the tests with the optimum inhibitor addition, was 0.35 mg L-1.

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Inhibition of dezincification of 70-30 brass by aminoalkyl mercaptotriazoles

Abstract

ASJC Scopus subject areas

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