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Badawy, W. A.; Al‐Kharafi, F. M.; Al-Ajmi, J.R.

doi:10.1023/a:1003893122201

Cited by 176 publications

(83 citation statements)

References 28 publications

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“…On the reverse scan, the dissolution of the Co-W-P deposit starts at a potential of −0.85 V. The peak at around −0.78 V develops possibly due to the oxidation of Co(OH) 2 . The formation of Co(OH) 2 during the cathodic scan is a well known phenomenon [24][25][26]. It is noticeable that the anodic peak at around −0.52 V has been shifted cathodically compared to earlier reports where cyclic voltammograms were obtained on a copper electrode [12,14].…”

Section: Polarisation Behaviourmentioning

confidence: 76%

Characterisation of electrodeposited Co–W–P amorphous coatings on carbon steel

Yun¹,

Dulal²,

Shin³

et al. 2008

Electrochimica Acta

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Section: Polarisation Behaviourmentioning

confidence: 76%

Characterisation of electrodeposited Co–W–P amorphous coatings on carbon steel

Yun¹,

Dulal²,

Shin³

et al. 2008

Electrochimica Acta

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“…Also, such chemical behaviour of examined alloys can be connected to the content of constituents (Co, Cr, Mo) from which each has its own electrochemical behaviour [19]. Electrochemical behaviour, composition and solubility of the surface layers, formed on the individual metal components, Co and Cr, in neutral and alkaline solution have been relatively well studied [20][21][22][23][24][25]. However, synergic activity of electrochemical behaviours of these three components differs from their individual behaviour [26][27][28].…”

Section: Discussionmentioning

confidence: 99%

Passivity of Co-Cr-Mo alloys in lactic acid solutions

Hadžipašić¹,

Malina²,

Matković³

2010

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The method of potentiodynamic polarization was used to obtain the electrochemical measurements of ten experimental Co-Cr-Mo alloys with different chemical composition in two solutions of 0.1 % lactic acid (LA): medium A containing Cl − -ions (0.1 % LA in artificial saliva, pH 6.52) and medium B without Cl − -ions (0.1 % LA in distilled water, pH 2.99). These solutions as representative of oral cavity conditions were chosen in order to see if the alloys could be used in dental practice. Wironit was used as reference material.In vitro experiments have shown that susceptibility to local corrosion was more pronounced in solution A. In contrast, the tendency to general corrosion was greater in solution B.Referring to pitting potential of Wironit , samples 3 (Co55CR40Mo5), 6 (Co60CR30Mo10) and 9 (Co55CR20Mo25) have shown the best performances with the highest Epitt value in both media. The same is valid for these three alloys if general corrosion was considered.K e y w o r d s : Co-Cr-Mo dental alloys, passivity, lactic acid, artificial saliva, corrosion properties

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“…On the contrary, at -400 and -500 mV, the current density first decreased to a minimum then increase to a top in a repetition process too. This This behavior can be explained on the bases that the main constituent of the passive film is MoO 2 which contains a small ratio of MoO 3 and Mo(OH) 3 which may be reduced according to equations (19) : 2MoO 3 Oxide film dissolution takes place according to the backward reaction. The current oscillation can be attributed to the competition between the anodic formation and chemical dissolution of the passive film on the electrode surface.…”

Section: Iii-potentiostatic Polarization Measurementsmentioning

confidence: 99%

Electrochemical Behavior of Molybdenum Electrode in Acetic, Formic and Oxalic Acid Solutions.

Attia

Shennawy

Hussein

2008

Al-Azhar Bulletin of Science

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The electrochemical behavior of molybdenum electrode in acetic, formic and oxalic acid solutions is studied. The effect of immersion time, composition medium, applied voltage, applied current density and scanning rate is investigated using potentiodynamic, potentiostatic and galvanostatic polarization measurements.The stability of the oxide film formed on Mo electrode is affected by both the formation medium and the applied potential. In 0.5N oxalic acid, the critical applied voltage below which the current start to oscillate is equal to -80 mV. The rate of dissolution of anodic oxide film formed on Mo in oxalic acid is very rapid compared with that formed in acetic and formic acids. Also in oxalic acid solutions Mo is notably affected by applied current density in which reciprocal capacitance, C s -1 , decrease with increasing applied current density. On the contrary in acetic and formic acids Mo did not affect. In acetic acid solution, the time of anodization has little or no effect on the dissolution process.

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Untitled

Cited by 176 publications

References 28 publications

Characterisation of electrodeposited Co–W–P amorphous coatings on carbon steel

Characterisation of electrodeposited Co–W–P amorphous coatings on carbon steel

Passivity of Co-Cr-Mo alloys in lactic acid solutions

Electrochemical Behavior of Molybdenum Electrode in Acetic, Formic and Oxalic Acid Solutions.

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