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Corrosion monitoring of hydrogen by HUP probe in the presence of sulphide and thiourea / A. Abbassi in Materials and corrosion, Vol. 61 N° 2 (Fevrier 2010) 

Public ISBD [article]  in Materials and corrosion > Vol. 61 N° 2 (Fevrier 2010) . - pp. 136–140 Titre : Corrosion monitoring of hydrogen by HUP probe in the presence of sulphide and thiourea Type de document : texte imprimé Auteurs : A. Abbassi, Auteur ; A. Mihi, Auteur ; R. Benbouta, Auteur Année de publication : 2010 Article en page(s) : pp. 136–140 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : AC  impedance;  corrosion;  electrochemical  hydrogen  probe;  hydrogen  uptake;  weight  loss Résumé : The effect of sulphide and thiourea on hydrogen uptake during the corrosion of steel in deaerated pH3 has been studied using an electrochemical hydrogen probe incorporating a solid electrolyte (HUP) and lead dioxide (PbO2) as a reference electrode. This probe has been used for the quantitative determination of the hydrogen activity generated during the corrosion of steel. The sensor voltage implies an average equivalent hydrogen pressure in uncharged steel of 2 × 10−18 atmospheres. During the corrosion of steel, this value increases by very large amounts; thus in deaerated pH3, the equivalent pressure rose by 1024.5 in the presence of 200 ppm sulphide and by 102 in the presence of 100 ppm thiourea. Weight loss and AC impedance methods were also performed under the same conditions as the hydrogen measurements. The hydrogen probe data were correlated with a.c impedance and weight loss results in order to understand the effect of S2− and thiourea on hydrogen uptake. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905250/abstract [article] Corrosion monitoring of hydrogen by HUP probe in the presence of sulphide and thiourea [texte imprimé] / A. Abbassi, Auteur ; A. Mihi, Auteur ; R. Benbouta, Auteur . - 2010 . - pp. 136–140. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 61 N° 2 (Fevrier 2010) . - pp. 136–140 Mots-clés : AC  impedance;  corrosion;  electrochemical  hydrogen  probe;  hydrogen  uptake;  weight  loss Résumé : The effect of sulphide and thiourea on hydrogen uptake during the corrosion of steel in deaerated pH3 has been studied using an electrochemical hydrogen probe incorporating a solid electrolyte (HUP) and lead dioxide (PbO2) as a reference electrode. This probe has been used for the quantitative determination of the hydrogen activity generated during the corrosion of steel. The sensor voltage implies an average equivalent hydrogen pressure in uncharged steel of 2 × 10−18 atmospheres. During the corrosion of steel, this value increases by very large amounts; thus in deaerated pH3, the equivalent pressure rose by 1024.5 in the presence of 200 ppm sulphide and by 102 in the presence of 100 ppm thiourea. Weight loss and AC impedance methods were also performed under the same conditions as the hydrogen measurements. The hydrogen probe data were correlated with a.c impedance and weight loss results in order to understand the effect of S2− and thiourea on hydrogen uptake. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905250/abstract