Coverage of iron surface by organic compounds and anions in acid solutions

Murakawa, Takao; Nagaura, Shigeo; Hackerman, Norman

doi:10.1016/s0010-938x(67)80105-7

Cited by 160 publications

(36 citation statements)

References 7 publications

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“…There are many possibilities regarding the mode of adsorption of quinine on steel. The most probable one is adsorption through bridged chloride [16, 34,35] since under the present experimental conditions quinine is in the cationic form and the iron surface is considered to be positively charged [36,37]. It is noteworthy that the inhibitive action of quinine on the corrosion of low carbon steel in H 2 SO 4 is almost nil (data are not shown here).…”

Section: Adsorption Isothermsmentioning

confidence: 85%

Eco friendly corrosion inhibitors: Inhibitive action of quinine for corrosion of low carbon steel in 1 m HCl

Awad

2006

J Appl Electrochem

120

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Quinine, a natural product, was investigated as a corrosion inhibitor for low carbon steel in 1.0 M HCl solution. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used to study the inhibition action in the temperature range 20-50°C. The corrosion of steel was controlled by a charge transfer process at the prevailing conditions. The electrochemical results showed that quinine is an efficient inhibitor for low carbon steel and an efficiency up to 96% was obtained at 20°C. The inhibition efficiency increases with inhibitor concentration and reaches a near constant value in the concentration range 0.48 mM and above. Application of the Langmuir adsorption isotherm enabled a study of the extent and the mode of adsorption.

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Section: Adsorption Isothermsmentioning

confidence: 85%

Eco friendly corrosion inhibitors: Inhibitive action of quinine for corrosion of low carbon steel in 1 m HCl

Awad

2006

J Appl Electrochem

120

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“…The role of inhibitors in bringing changes in dezincification characterstics is discussed below based on the models proposed for the synergistic effects of organic molecules and the anions. [29][30][31] (a) The presence of the inhibitors in traces can affect the overall dissolution rate due to their adsorption at the interface which may not effect the extent of dezincification-- Fig. 9, Model I.…”

Section: Discussionmentioning

confidence: 99%

The dezincification of brass and its inhibition in acidic chloride and sulphate solutions

Dinnappa¹,

Mayanna

1987

Corrosion Science

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“…Generally, for the interaction of inhibitors A and B, the synergism parameter (S I ) is defined as follows [29]:…”

Section: Discussionmentioning

confidence: 99%

Synergistic Inhibition Effect Between Capsella bursa-pastoris Extracts and Iodide Ions for Q235 Mild Steel in 1 M HCl Solution

Hu¹,

Qiu²,

Zhang³

et al. 2014

TOMSJ

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Abstract:The inhibition effect of Capsella bursa-pastoris extracts (CBE) and its synergistic effect with KI (CBEK) for Q235 mild steel in 1 M HCl solution were studied by electrochemical measurements. Both CBE and CBEK can serve as eco-friendly, mixed-type inhibitors, and the inhibition efficiency increases with the concentration and temperature. The synergistic parameter (S I ) indicates a cooperative mechanism between the iodide anions and CBE molecules at lower temperature. The associated thermodynamic and kinetic data suggest the presence of CBEK on metal surface mainly through chemisorption at higher temperature. The adsorption processes follow Langmuir isotherm.

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Coverage of iron surface by organic compounds and anions in acid solutions

Cited by 160 publications

References 7 publications

Eco friendly corrosion inhibitors: Inhibitive action of quinine for corrosion of low carbon steel in 1 m HCl

Eco friendly corrosion inhibitors: Inhibitive action of quinine for corrosion of low carbon steel in 1 m HCl

The dezincification of brass and its inhibition in acidic chloride and sulphate solutions

Synergistic Inhibition Effect Between Capsella bursa-pastoris Extracts and Iodide Ions for Q235 Mild Steel in 1 M HCl Solution

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