Inhibition effect of potassium iodide on corrosion of stainless steel in hydrochloric acid solution

Sanad, S.H.; Ismail, Adel A.; Mahmoud, N. A.

doi:10.1007/bf01119726

Cited by 14 publications

(6 citation statements)

References 9 publications

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“…The addition of 10 mM iodide caused pitting to occur at a potential that was about 0.1 V more positive, which is consistent with trends reported elsewhere. 18 Potentials applied to the electrode substrate (E s ) during SECM imaging were based on the potentiodynamic curve in Fig. 3.…”

Section: Resultsmentioning

confidence: 99%

Scanning Electrochemical Microscopy Detection of Dissolved Sulfur Species from Inclusions in Stainless Steel

Paik

White

Alkire

2000

J. Electrochem. Soc.

121

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The dissolution of MnS inclusions in stainless steels (SS) 303 and 304 during initiation of pitting corrosion in an aqueous solution containing 10 mM KI and 0.1 M NaCl was investigated with use of a scanning electrochemical microscope (SECM). The dissolution products of MnS were detected amperometrically at a carbon fiber SECM tip using I Ϫ /I 3 Ϫ as the redox mediator. SECM images showed that the sulfur species are slowly generated above previously identified MnS inclusions. The SECM tip current was stable up to 100 min, depending on the potential applied to the SS 304. SECM was found to be useful in mapping local concentration distributions of sulfur and their evolution in time during dissolution.

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Section: Resultsmentioning

confidence: 99%

Scanning Electrochemical Microscopy Detection of Dissolved Sulfur Species from Inclusions in Stainless Steel

Paik

White

Alkire

2000

J. Electrochem. Soc.

121

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“…The strong chemisorption of iodide ions on the metal surface (Sanad et al, 1992) is responsible for the synergistic effect of iodide ions in combination with cation of the inhibitor. The cation is then adsorbed by coulombic attraction on the metal surface where iodide ions are already adsorbed by chemisorption.…”

Section: Synergistic Effectmentioning

confidence: 99%

Low Molecular Weight Straight-Chain Diamines as Corrosion Inhibitors for Ss Type 304 in HCL Solution

Fouda

Mostafa

Elewady

et al. 2008

Chemical Engineering Communications

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The effect of some low molecular weight straight-chain diamines to inhibit the corrosion of SS type 304 in 1 M HCl solution is examined by weight loss and galvanostatic polarization techniques. The inhibition efficiency increases with increasing the number of carbon atoms in the chain up to 8 carbons, but at higher than 8 carbon atoms (12 carbons) it decreases again. These diamine compounds act as mixed-type inhibitors, but the cathode is more polarized than the anode when an external current was applied. The corrosion rate in the presence of the investigated diamine compounds was found to increase with increasing the temperature and decrease with increasing the concentration of these compounds. Activation parameters for the corrosion of SS in 1 M HCl were calculated and showed that corrosion was much reduced in the presence of inhibitors. The adsorption of these compounds on SS from 1 M HCl solution obeys the Langmuir adsorption isotherm. The synergistic effect of KI on the inhibitive efficiency of the investigated diamine compounds was also studied.

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“…Kali iodide used to be a good inhibitor for a long time [6]. A series of reports highlighted the synergistic effect of iodide ions on the corrosion inhibition of aluminium/mild steel in acidic [7][8][9][10][11].…”

Section: Introduction mentioning

confidence: 99%

Study the corrosion inhibition of mix of caffeine and iodua for CT3 steel in 1M HCl solution by electrochemical methods

Thao

2017

NST

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Corrosion inhibition of mild carbon steel, CT3, in 1.0 M HCl solution by iodide (with different concentrations, from 0.1g/l to 5.0g/l), mix of caffeine and iodide was investigated by electrochemical methods and micro surface observations (SEM). Experiment result showed that: (1) as the concentration of iodide increases, the inhibition efficiency increases; Iodide acts as a mix – type inhibitor but inhibits anodic reaction is predominant. (2) Mix of 1.0 g/l iodide ang caffeine acts as a typical mix – type inhibitor. the current densities of both of anodic and cathode are decline when concentration of caffeine is 1.0 g/l or more. Inhibition efficiency max is approximately 96% at concentration of 5.0 g/l caffeine, the inhibition efficiency maintained relatively stable within 5 days.

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Inhibition effect of potassium iodide on corrosion of stainless steel in hydrochloric acid solution

Cited by 14 publications

References 9 publications

Scanning Electrochemical Microscopy Detection of Dissolved Sulfur Species from Inclusions in Stainless Steel

Scanning Electrochemical Microscopy Detection of Dissolved Sulfur Species from Inclusions in Stainless Steel

Low Molecular Weight Straight-Chain Diamines as Corrosion Inhibitors for Ss Type 304 in HCL Solution

Study the corrosion inhibition of mix of caffeine and iodua for CT3 steel in 1M HCl solution by electrochemical methods

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