Studies on corrosion-inhibiting performance of antithyroid drugs on mild steel in hydrochloric acid

Hoseinpoor, Mehrdad; Davoodi, Ali

doi:10.1007/s11164-013-1527-z

Cited by 12 publications

(4 citation statements)

References 52 publications

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“…Therefore, a wet etching technique is employed to replace dry etching. Compared to dry etching, wet etching has several advantages: high mass production, isotropic etching, and higher selective ratio [6,7]. Wet etching has also been developed in the GaN-LED process.…”

Section: Introductionmentioning

confidence: 99%

The study of wet etching on GaN surface by potassium hydroxide solution

et al. 2016

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Potassium hydroxide solution was used to etch un-doped GaN grown on the sapphire substrate at 180 and 260°C. We illustrated the etching phenomenon in detail and probed its mechanism in the wet etching process. By multiplying the planar density and the number of dangling bonds on the N atom, we proposed the etching barrier index (EBI) to describe the difficulty degree of each lattice facet. The raking of EBI will be ?cCombining the EBI with SEM results, we thoroughly studied the whole etching process. We confirmed that in our research, KOH wet etching on GaN starts from the r-plane instead of the ?c-plane or -c-plane, which differs from other studies. We also found that during the high-temperature etching process, there are two etching approaches. In one, the etching begins vertically from the top to the bottom, then horizontally, and finally reversely from the bottom to the top. In the other, etching pits will develop into a hexagonal hole of the sidewall of m-plane.

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Section: Introductionmentioning

confidence: 99%

The study of wet etching on GaN surface by potassium hydroxide solution

et al. 2016

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“…In literature, several authors have reported that drugs are efficient inhibitors for the corrosion of metals in acidic media. [11][12][13][14][15][16][17][18][19][20][21][22] So, the choice of drugs used as corrosion inhibitors is based on the following: (a) drug molecules containing oxygen, nitrogen and sulphur as active centres, (b) drugs are reportedly environmentally friendly and important in biological reactions and (c) drugs can be easily produced and puried. 23,24 The use of cefotaxime drug as an environmentally friendly corrosion inhibitor for copper in acidic medium has not been reported before.…”

Section: Introductionmentioning

confidence: 99%

Inhibitive action and adsorption behavior of cefotaxime drug at copper/hydrochloric acid interface: electrochemical, surface and quantum chemical studies

El‐Haddad

2016

RSC Adv.

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“…Equation ( 7 ) can be employed to measure Gibbs free energy of adsorption (∆ G° ads ) 56 : where R − 8.314 J K −1 mol −1 (universal gas constant), T —absolute temperature in K, and 55.5—water’s molar concentration in mol L −1 . The negative sign of ∆ G° ads indicates that the adsorption process is spontaneous 57 .…”

Section: Resultsmentioning

confidence: 99%

“…( 6) given in Table 2 confirmed the fitted ( 4) 2 suggests the more pronounced adsorption process (Table 2). Equation (7) can be employed to measure Gibbs free energy of adsorption (∆G°a ds ) 56 :…”

Section: Assessment Of Adsorption Isotherms and Thermodynamic Parametersmentioning

confidence: 99%

Corrosion inhibition of mild steel in hydrochloric acid solution by the expired Ampicillin drug

Alamry

Khan

Aslam

et al. 2023

Sci Rep

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This study examines the utilization of the expired drug, namely ampicillin, as a mild steel corrosion inhibitor in an acidic environment. The inhibitor was evaluated using weight loss and electrochemical measurement accompanied with surface analytical techniques. The drug showed a potential inhibitory efficiency of > 95% at 55 °C. The inclusion of the inhibitor increased the charge transfer resistance at the steel-solution interface, according to impedance analyses. According to potentiodynamic polarisation measurements, expired ampicillin drug significantly decreased the corrosion current density and worked as a mixed-type corrosion inhibitor. The Langmuir adsorption isotherm was followed by the adsorption of ampicillin drug on the steel substrate, exhibiting an association of physical and chemical adsorption mechanisms. The surface study performed using contact angle and scanning electron microscopy–energy dispersive spectroscopy (SEM–EDS) measurements supported the inhibitor adsorption on the steel substrate.

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Studies on corrosion-inhibiting performance of antithyroid drugs on mild steel in hydrochloric acid

Cited by 12 publications

References 52 publications

The study of wet etching on GaN surface by potassium hydroxide solution

The study of wet etching on GaN surface by potassium hydroxide solution

Inhibitive action and adsorption behavior of cefotaxime drug at copper/hydrochloric acid interface: electrochemical, surface and quantum chemical studies

Corrosion inhibition of mild steel in hydrochloric acid solution by the expired Ampicillin drug

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