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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 25 (1994), S. 292-299 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The behaviour of Sn electrode in aqueous solutions was investigated in the presence of some additives. The effect of Cl- in a very wide range of concentration (10-6-10M) was thourgly investigated. The effect of time, temperature, stirring, nitrogen bubbling, cathodic reduction, added cations and anions, and pH were studied. It was observed that in all cases the potential drifts positivly and the attainment of steady state potentials is faster at higher [Cl-] and the differences between immersion and steady state potentials gets smaller the higher [Cl-]. The stirring of solutions and the bubbling of N2 has little effect on the potential. The rise in temperature was found to make the steady state potential more negative at higher temperature. At 1 MNaCl, the OCP-pH diagram shows two linear parts covering the pH range 1-8 and 8-13 indicating the presence of two different mechanisms.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 27 (1996), S. 297-306 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The electrochemical behaviour of commercial tin anodes in sea water at different scan rates, pHs, temperatures and in the presence of some additives has been investigatesd. Open circut potentials (OCP), linear polarization (Rp) and potentiodynamic measurements revealed that the behaviour is dependent on the above mentioned conditions. The plot of critical current density (Cd) vs. the square root of the scan rate (SR) gave a straight line with positive slope and passing through the origin indicating diffusion kinetics for the anode film formation. The analysis of data in neutral sea water and Cl- solutions leads to the conclusion that the film is formed from tin oxides and/or hydroxides. The morphology of the electrode surface was found to be dependent on the operating conditions as the scanning electron microscopy studies suggested. On the other hand EDX analysis showed different amounts of chloride on the surface layer depending on pH. The O2 evolution was not observed upto 3.5 V (SCE).
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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