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Effect of some experimental conditions on the electroplated Mn-Bi film composition

Auteurs : Salem Boudinar, Nassima Benbrahim, Baya Benfedda, Aziz Kadri, Eric CHAINET
Année : 2016
Domaine : Sciences des matériaux
Type : Communication
Conférence: 7th African Conference on Non Destructive Testing ACNDT 2016 & the 5th International Conference on NDT and Materials Industry and Alloys (IC-WNDT-MI)
Résumé en PDF : (résumé en pdf)
Fulltext en PDF : (.pdf)
Mots clés : Mn-Bi, electrodeposition, Cyclic voltammety, EDS, MEB

Résumé :

In this study, the effect of some experimental parameters on the electrodeposition of Mn-Bi thin film from a mixed sulfate-nitrate bath was investigated under direct potentiostatic mode based on the previous published paper. The plating bath is characterized by the presence of some additives like boric acid and ammonium sulfate. Cyclic voltammety is used to the electrochemical analysis, the chemical composition and the morphology of the films obtained at different experimental conditions were examined by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The deposits have a cauliflower appearance with a heterogeneous distribution of manganese and bismuth. The Mn and Bi content in the deposit estimated by the EDS analysis revealed that the film composition depend strongly on the applied potential and the pH bath but no significant variation is obtained with varying the deposition time.