3. Microscopic Galvanic Cells of very small local

Abstract This communication reports on the concerns associated with possible generation of galvanic coupling effects for construction materials that are used to manufacture mounting assemblies for ground-mounted photovoltaic (PV) power stations. For this purpose, six macro-corrosion galvanic cells were assembled, including: hot-dip Zn/Magnelis®-coated steel/Al and stainless steel (SS)/Al cells. Corrosion experiments involved continuous, ca. three-month exposure of these couplings in 3 wt.% NaCl solution, conducted at room temperature for a stable pH value of around 8. All corrosion cells were subjected to regular assessment of galvanic current-density and potential parameters, where special consideration was given to compare the corrosion behaviour of Zn-coated steel samples with that of Magnelis®-coated electrodes. Characterization of surface condition and elemental composition for examined materials was carried-out by means of SEM and EDX spectroscopy techniques.

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Conceptual Difficulties Experienced by Prospective Teachers in Electrochemistry: Half-Cell Potential, Cell Potential, and Chemical and Electrochemical Equilibrium in Galvanic Cells

Journal of Chemical Education ◽

10.1021/ed079p735 ◽

2002 ◽

Vol 79 (6) ◽

pp. 735 ◽

Cited By ~ 20

Author(s):

Ali Riza Özkaya

Keyword(s):

Prospective Teachers ◽

Half Cell ◽

Cell Potential ◽

Galvanic Cells ◽

Electrochemical Equilibrium ◽

Conceptual Difficulties

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Thermodynamic properties of the binary molten salt systems, PbBr2-KBr, PbBr2-RbBr and PbBr2-CsBr, by measurement of the electromotive forces of galvanic cells

Australian Journal of Chemistry ◽

10.1071/ch9810479 ◽

1981 ◽

Vol 34 (3) ◽

pp. 479 ◽

Cited By ~ 4

Author(s):

H Bloom ◽

MS White

Keyword(s):

Thermodynamic Properties ◽

Molten Salt ◽

Activity Coefficients ◽

Molten Salts ◽

Free Energies ◽

Complex Ions ◽

Galvanic Cells ◽

Salt Systems

The electromotive forces of galvanic cells for the formation of PbBr2 in the molten binary salt systems, PbBr2-KBr, PbBr2,-RbBr and PbBr2-CsBr, have been measured. Activities, activity coefficients and partial molar free energies have been calculated for each component of the three systems. Integral free energies of mixing have also been calculated. Various models of mixing of molten salts have been applied to the results. The systems contain complex ions, probably mixtures of PbBr42-, PbBr64- with some PbBr3-.

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