Effect of benzotriazole on electrochemical and corrosion behaviour of type 304 stainless steel in 2M sulphuric acid solution

Rodrigues, Paulo Rogério Pinto; Aoki, Idalina Vieira; Andrade, Antero Silva Ribeiro de; Oliveira, Eleilde de Sousa; Agostinho, Sílvia Maria Leite

doi:10.1179/000705996798114383

Cited by 5 publications

(6 citation statements)

References 1 publication

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“…10 and 11) suggesting that the adsorption of the compounds from the acid on stainless steel surface followed Longmuir adsorption isotherm. The free energy of adsorption ( G ads ) at different temperatures was calculated from the following equations: G ads = -RT ln(55.5K) (6) and K is given by:…”

Section: Adsorption Isothermmentioning

confidence: 99%

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Corrosion inhibition of 302 stainless steel with schiff base compounds

Azimi

Sheikhshoaei

Salari

2010

JICS

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The effects of 2,2'-[bis-N(4-cholorobenzaldimin)]-1,1'-dithio (BCBD) and bis-(2-aminophenyl) disulphide (BAPD) on the corrosion behavior of 302 stainless steel in 0.5 M sulfuric acid solution as corrosive medium were investigated using weight loss and potentiostatic polarization techniques. Some corrosion parameters such as anodic and cathodic Tafel slopes, corrosion potential, corrosion current density, surface coverage degrees and inhibition efficiencies were calculated. The polarization measurements indicated that the inhibitors were of mixed type which inhibited corrosion by parallel adsorption on the surface of stainless steel due to the presence of more than one active centre in the inhibitor molecule. The adsorption followed Langmuir adsorption isotherm. The activation energy and thermodynamic parameters were calculated at different temperatures. Results showed that BCBD had a higher inhibition efficiency compared with BAPD.

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Section: Adsorption Isothermmentioning

confidence: 99%

“…Most well-*Corresponding author. E-mail: s.m.a.hosseini@mail.uk.ac.ir known and investigated inhibitors for corrosion of steel in acidic solution are heterocyclic compounds [1][2][3][4][5][6][7][8]. For these inhibiting compounds, it is clear that the adsorption on the metal substrate is the initial step in inhibition.…”

Section: Introductionmentioning

confidence: 99%

Corrosion inhibition of 302 stainless steel with schiff base compounds

Azimi

Sheikhshoaei

Salari

2010

JICS

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“…Atmospheric influences of copper are minimal or sometime untraceable; however, it is well-known that in aggressive media, it is vulnerable to degradation [1][2]. The dynamics of deterioration due to oxidation when in touch with liquid contaminant, solid and gas oxidizer speed up the corrosion process [9][10][11][12]. Though, copper is one of the well performed nonferrous materials with noble characteristics which make it resists many corrosive medium; however is susceptibility can be detrimental in nature.…”

Section: Introductionmentioning

confidence: 99%

“…The chemical active molecules of some of these inhibitors like azoles [1][2][3], amines and amino acids [1,[11][12][13] among others performed better in copper. It is noticed that presence of heteroatoms such as nitrogen, sulfur, phosphorous in the organic molecule improves the action of corrosion inhibitor [9,[15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Inhibitive action and synergistic performance of 2-aminoethanol and <i>N</i>,<i>N</i>-diethyl- ethanamine on copper in hydrochloric acid solution

Fayomi¹,

Popoola²,

Popoola³

2014

Bull. Chem. Soc. Eth.

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ABSTRACT. The corrosion inhibition action of copper alloy in 1 M HCl solution in the presence of 2-aminoethanol (A) and N,N-diethylethanamine (D) at 298 o K was investigated using gravimetric and linear polarization method. Surface studies of the copper alloy sample were observed by the help of high resolution scanning electron microscope equipped with energy dispersive spectroscopy (SEM/EDS). The evaluations were taken after 48 h interval for 288 h while the concentration of the inhibitor was varied from 5 to 10% w/v. The result of the examination shows that 2-aminoethanol (A) and N,N-diethylethanamine (D) has a good corrosion inhibition effect for copper alloy in 1 M HCl solutions and its efficiency attains above 96% at 10% w/v concentration. The linear polarization result affirmed that 2-aminoethanol (A) and N,N-diethylethanamine (D) acts as a mixed type corrosion inhibitor. Their adsorption on copper alloy has been found to obey Langmuir adsorption isotherm at all the concentration of inhibitor applied. The outcomes from all approaches are in good agreement with each other.

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“…M (s) = metal; M n+ (aq) = cátion metálico. A variação da condutividade da solução contendo apenas H 2 SO 4 ocorre devido a dissolução de íons do metal e hidrogênio para o eletrólito.Para soluções contendo etanol, a equação para prever a ordem da reação foi a equação 16[26]:l nΛt = l nΛt 0 − k t (16)Em que: l nΛt = condutividade t ; l nΛt = condutividade t 0 ; k = constante de velocidade de adsorção; t = temperatura em Kelvin.A equação 16 determina a ordem da reação para medida de condutividade de pri-meira ordem para o aço inoxidável 304 em H 2 SO 4 com etanol de (1 a 20% v/v). Este fato indica que existe uma mudança na cinética da reação de oxidação do metal pela adição de etanol, ou seja, existe a dependência da velocidade da reação com a concentração de etanol.…”

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Evaluation of 304 Stainless Steel Corrosion in Sulfuric Acid and Ethanol Media

Antunes

Viomar

Antônio

et al. 2015

Revista Ciencias Exatas E Naturais

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Resumo: O objetivo deste trabalho foi estudar o comportamento eletroquímico do aço inoxidável 304 em H 2 SO 4 2 mol L −1 , na ausência e presença de etanol obtido por fermentação anaeróbia de glicerina por Escherichia coli. As técnicas de caracterização empregadas foram: potencial de circuito aberto, polarização potenciodinâmica Recebido em 08/05/2014 -Aceito em 01/07/2015. RECEN 17(2) p. 235-260 jul/dez 2015

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Effect of benzotriazole on electrochemical and corrosion behaviour of type 304 stainless steel in 2M sulphuric acid solution

Cited by 5 publications

References 1 publication

Corrosion inhibition of 302 stainless steel with schiff base compounds

Corrosion inhibition of 302 stainless steel with schiff base compounds

Inhibitive action and synergistic performance of 2-aminoethanol and <i>N</i>,<i>N</i>-diethyl- ethanamine on copper in hydrochloric acid solution

Evaluation of 304 Stainless Steel Corrosion in Sulfuric Acid and Ethanol Media

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