Impedance Study of Reinforcing Steel in Simulated Pore Solution with Tannin

Flis, J.; Zakroczymski, T.

doi:10.1149/1.1837031

Cited by 153 publications

(50 citation statements)

References 6 publications

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“…The negative values of ÁG ads show that the adsorbed layer on the S410SS surface is stable and the adsorption process is spontaneous. 41 The calculated values ranged between À45:39 < ÁG ads < À48:88 kJ/mol, which is higher than the threshold value (À40 kJ/mol) necessary for chemisorption adsorption resulting from charge sharing or a transfer from the BEZT cations to the charged metal surface. 42 The varied properties of the S41000SS surface are responsible for the di®erences in Table 3.…”

Section: Thermodynamics Of the Corrosion Inhibition Mechanismmentioning

confidence: 87%

ANTI-CORROSION PERFORMANCE OF 1,3-BENZOTHIAZOLE ON 410 MARTENSITIC STAINLESS STEEL IN H₂SO₄

Loto

2017

Surf. Rev. Lett.

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The corrosion inhibition e®ect of synthesized 1,3-benzothiazole at very low concentrations on 410 martensitic stainless steel in 3 MH 2 SO 4 solution was studied through potentiodynamic polarization and weight loss measurements. The observation showed that the organic compound performed e®ectively with average inhibition e±ciencies of 94% and 98% at the concentrations studied from both electrochemical methods due to the inhibition action of protonated inhibitor molecules in the acid solution. The amine and aromatics functional groups of the molecules active in the corrosion inhibition reaction were exposed from Attenuated total re°ectance-Fourier transform infrared spectroscopy (ATR-FTIR) spectroscopic analysis. Thermodynamic calculations showed cationic adsorption to be chemisorption adsorption, obeying the Langmuir adsorption isotherm. Images from optical microscopy showed an improved morphology in comparison to images from corroded stainless steel. Severe surface deterioration and macro-pits were observed in the uninhibited samples.

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Section: Thermodynamics Of the Corrosion Inhibition Mechanismmentioning

confidence: 87%

ANTI-CORROSION PERFORMANCE OF 1,3-BENZOTHIAZOLE ON 410 MARTENSITIC STAINLESS STEEL IN H₂SO₄

Loto

2017

Surf. Rev. Lett.

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“…These quantities can be calculated depending on the estimated values of K ads from adsorption isotherms, at different temperatures. The constant of adsorption, K ads , is related to the standard free energy of adsorption, ΔG o ads , with the following equation [34]:…”

Section: Adsorption Isotherm and Thermodynamic Parametersmentioning

confidence: 99%

Study of Temperature Effect on the Corrosion Inhibition of C38 Carbon Steel Using Amino-tris(Methylenephosphonic) Acid in Hydrochloric Acid Solution

Labjar

Bentiss

Lebrini

et al. 2011

International Journal of Corrosion

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Tafel polarization method was used to assess the corrosion inhibitive and adsorption behaviours of aminotris(methylenephosphonic) acid (ATMP) for C38 carbon steel in 1 M HCl solution in the temperature range from 30 to 60• C. It was shown that the corrosion inhibition efficiency was found to increase with increase in ATMP concentration but decreased with temperature, which is suggestive of physical adsorption mechanism. The adsorption of the ATMP onto the C38 steel surface was found to follow Langmuir adsorption isotherm model. The corrosion inhibition mechanism was further corroborated by the values of kinetic and thermodynamic parameters obtained from the experimental data.

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“…8). This tendency is often observed in corroding systems where a decrease in charge transfer resistance is usually accompanied by a rise in capacitance [23,28,29]. …”

Section: Fitting Of Impedance Data To Circuit R O (Q 1 [R 1 (Q 2 R 2 )])mentioning

confidence: 90%

Impedance of Cr18Ni10 stainless steel in sulphate solutions after a low‐temperature plasma nitriding

Flis¹,

Kuczynska

2003

Materials & Corrosion

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Impedance of Cr18Ni10 stainless steel in sulphate solutions after a low-temperature plasma nitriding Impedanz eines nichtrostenden Cr18Ni10 Stahls in Sulfatlö sungen nach einer Plasmanitrierung bei niedriger Temperatur J. Flis* and M. Kuczynska Dedicated to PD Dr. J. Gö llner on the occasion of his 60th birthday The 00Cr18Ni10 stainless steel was examined before and after plasma nitriding in a 80%N 2 /20%H 2 gas mixture at 425 8C for 30 h, resulting in the formation of a supersaturated solid solution of nitrogen in austenite (S phase) with 12.9 wt.% N at the surface. Electrochemical measurements were made on the as-nitrided surface and after abrasion to various depths. Polarisation curves and impedance were measured in 0.1 M Na 2 SO 4 acidified to pH 3.0; some measurements were also made at pH 6 and 9. It was found that nitrogen decreased the corrosion resistance of the steel in the acidified solution (pH 3.0), but increased it in the neutral and near-neutral solutions (pH 6.0 and 9.0). The deleterious effect of nitrogen at pH 3.0 was at potentials of the active state much stronger and more dependent on the nitrogen concentration than in the passive state. It was suggested that the increased anodic reactivity of the nitrided steel in the active state is inherent for the lower thermodynamic stability of the supersaturated solid solution of nitrogen, whereas the increased corrosion resistance in the neutral and near-neutral sulphate solutions is associated with the effect of nitrogen on anodic films.Chrom-Nickel-Stahl Cr18Ni10 wurde vor und nach einer Plasmanitrierung (30 h bei 425 8C in 80%N 2 /20%H 2 ) untersucht. Das Ergebnis war eine übersättigte feste Lösung mit 12,9 Gew% Stickstoff in der Austenitphase auf der Oberfläche des Chrom-NickelStahls. Elektrochemische Messungen wurden an der nitrierten Oberfläche und nach dem Abschleifen auf unterschiedliche Tiefen durchgeführt. Polarisationskurven und Impedanzmessungen erfolgten in 0,1 molarer Natriumsulfatlösung bei pH 3, pH 6 und pH 9.Es stellte sich heaus, dass Stickstoff den Korrosionswiderstand in der sauren Lösung (pH 3) herabsetzte, in der neutralen und leicht basischen Lösung (pH 6 und pH 9) jedoch erhöhte. Der nachteilige Einfluss des Stickstoffs bei pH 3 war bei Potentialen im aktiven Zustand viel stärker ausgeprägt und auch wesentlich abhängiger von der Stickstoffkonzentration als dies im passiven Zustand der Fall war. Es wird angenommen, dass die erhöhte anodische Reaktivität des nitrierten Stahls im aktiven Zustand von der geringen thermodynamischen Stabilität einer übersättigten Stickstofflösung ausgeht, während der erhöhte Korrosionswiderstand in der neutralen und leicht basischen Sulfatlösung mit dem Einfluss des Stickstoffs auf anodische Deckschichten verbunden ist.

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Impedance Study of Reinforcing Steel in Simulated Pore Solution with Tannin

Cited by 153 publications

References 6 publications

ANTI-CORROSION PERFORMANCE OF 1,3-BENZOTHIAZOLE ON 410 MARTENSITIC STAINLESS STEEL IN H₂SO₄

ANTI-CORROSION PERFORMANCE OF 1,3-BENZOTHIAZOLE ON 410 MARTENSITIC STAINLESS STEEL IN H₂SO₄

Study of Temperature Effect on the Corrosion Inhibition of C38 Carbon Steel Using Amino-tris(Methylenephosphonic) Acid in Hydrochloric Acid Solution

Impedance of Cr18Ni10 stainless steel in sulphate solutions after a low‐temperature plasma nitriding

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Impedance Study of Reinforcing Steel in Simulated Pore Solution with Tannin

Cited by 153 publications

References 6 publications

ANTI-CORROSION PERFORMANCE OF 1,3-BENZOTHIAZOLE ON 410 MARTENSITIC STAINLESS STEEL IN H2SO4

ANTI-CORROSION PERFORMANCE OF 1,3-BENZOTHIAZOLE ON 410 MARTENSITIC STAINLESS STEEL IN H2SO4

Study of Temperature Effect on the Corrosion Inhibition of C38 Carbon Steel Using Amino-tris(Methylenephosphonic) Acid in Hydrochloric Acid Solution

Impedance of Cr18Ni10 stainless steel in sulphate solutions after a low‐temperature plasma nitriding

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ANTI-CORROSION PERFORMANCE OF 1,3-BENZOTHIAZOLE ON 410 MARTENSITIC STAINLESS STEEL IN H₂SO₄

ANTI-CORROSION PERFORMANCE OF 1,3-BENZOTHIAZOLE ON 410 MARTENSITIC STAINLESS STEEL IN H₂SO₄