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Browsing by Subject "EIS"

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  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Badania właściwości elektrochemicznych nowych materiałów katodowych dla ogniw paliwowych SOFC
    (Data obrony: 2021-01-26) Kuklewski, Wiktor
    Wydział Energetyki i Paliw
  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Otrzymywanie i właściwości materiałów do konstrukcji superkondensatorów
    (Data obrony: 2019-07-11) Popardowski, Amadeusz
    Wydział Inżynierii Materiałowej i Ceramiki
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    The effect of rapid cooling on the corrosion resistance of as-cast aluminium alloy 5052
    (AGH University of Science and Technology Press, 2017) Szklarz, Zbigniew; Krawiec, Halina; Rogal, Łukasz
    The effect of rapid cooling by the vacuum suction casting method (VSC) on the microstructure and electrochemical response of the as-cast 5052 aluminium alloy is presented. The VSC method allowed us to obtain massive samples with a very high cooling rate (10$^{2}$ - 10$^{3}$)°C/s. The microstructure of the quick-cooled sample (QC) has been significantly changed. Finer grains and more-homogeneous intermetallic phase distribution has been observed. Corrosion potential (OCP) and polarization measurements (LSV) revealed a higher activity of the QC alloy than ingot (IN), which leads to a denser and thicker corrosion-product formation on the surface. Electrochemical Impedance Spectroscopy (EIS) indicates higher resistance values, which suggests a greater thickness of the corrosion products.