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Chronoamperometric study of the passive behaviour of tantalum in hostile media during water addition

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Academic year: 2021

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Fig. 1. Variation of the current density as a function of the potential (versus MSE) in the presence of the acidified methanol solutions at 0.1 mol/L concentration: HClO 4
Fig. 3. Cyclic voltamogramms of two representative acids (HBr and H 2 SO 4 ) at 0.1 mol/L concentration in methanol solution.
Fig. 5. Chronoamperometric curves during water addition at different potentials (versus MSE) in the presence of cosmotrope anions: SO 4 2ÿ , CH 3 SO 3 ÿ , SiF 6 2ÿ .
Fig. 7. Chronoamperometric curves during water addition at different potentials (versus MSE) in the presence of chaotrope anions: ClO 4 ÿ , Cl ÿ .
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