Corrosion inhibition under heat transfer of 904L stainless steel in phosphoric acid by benzotriazole

Bellaouchou, A.; Kabkab, B.; Guenbour, A.; Bachir, A. Ben

doi:10.1016/s0300-9440(00)00157-0

Cited by 38 publications

(16 citation statements)

References 26 publications

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“…The corrosion current (I corr ) and critical current density (I cr ) decrease as the concentration of the inhibitors increases. Such a characteristic behavior has been reported earlier [18][19][20].…”

Section: Gravimetric Measurementssupporting

confidence: 85%

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: Gravimetric Measurementssupporting

confidence: 85%

Corrosion inhibition of 302 stainless steel with schiff base compounds

Azimi

Sheikhshoaei

Salari

2010

JICS

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“…, OH -, and O 2-among others. The high concentration of oxygen in surface of stainless steels is generally the result of the formation of metallic oxides [18]. Here, this result can also be explained by the adsorption of phosphate ions on the surface.…”

Section: Cyclic Polarization Studiesmentioning

confidence: 90%

Electrochemical, SEM and XPS investigations on phosphoric acid treated surgical grade type 316L SS for biomedical applications

Prabakaran

Rajeswari

2008

J Appl Electrochem

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A simple surface pre-treatment method was attempted to establish a stable passive layer on the surface of surgical grade stainless steel (SS) of type 316L for biomedical applications. Surgical grade type 316L SS specimens were subjected to H 3 PO 4 treatment for 1 h by completely immersing them in the acid solutions to develop a passive barrier film. The effect of various concentrations of phosphoric acid on the localized corrosion resistance behavior of type 316L SS was investigated through electrochemical techniques using cyclic polarization studies and electrochemical impedance spectroscopy (EIS). X-ray photoelectron spectroscopy (XPS) was used to evaluate the nature and composition of the passive films. The surface morphology and relative elemental composition of the untreated and acid treated surfaces subjected to anodic polarization was studied by scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDAX) techniques, respectively. Compared with untreated (pristine) 316L SS, the 40% acid treated surface formed a stable passive layer that had superior corrosion resistance.

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“…The stainless steels have many super properties, but the insufficient corrosion resistance and higher interfacial contact resistance are two main drawbacks limited its widely application as bipolar plate material. 904L stainless steel is a type of austenitic stainless steel, which designed for enhance corrosion resistance in the sulfuric acid related media [7,8]. It has high levels of chromium and nickel with additions of molybdenum, showing benefit alloying elements to corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%