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  2. Pourbaix diagram - Wikipedia

    en.wikipedia.org/wiki/Pourbaix_diagram

    Pourbaix diagram of iron. [1] The Y axis corresponds to voltage potential. In electrochemistry, and more generally in solution chemistry, a Pourbaix diagram, also known as a potential/pH diagram, E H –pH diagram or a pE/pH diagram, is a plot of possible thermodynamically stable phases (i.e., at chemical equilibrium) of an aqueous electrochemical system.

  3. Noble metal - Wikipedia

    en.wikipedia.org/wiki/Noble_metal

    Au 3+ + 3 e − → Au: 1.5: 2.54: 223 Platinum ... The simplified entries in the reaction column can be read in detail from the Pourbaix diagrams of the considered ...

  4. Surface chemistry of neural implants - Wikipedia

    en.wikipedia.org/wiki/Surface_chemistry_of...

    Pourbiax diagrams will show the phases that a material will take in an aqueous environment, based on electrical potential and pH. The brain maintains a pH of around 7.2 to 7.4, and from the Pourbaix diagram of platinum [ 3 ] it can be seen that at around 0.8 volts Pt at the surface will oxidize to PtO 2 , and at around 1.6 volts, PtO 2 will ...

  5. Passivation (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Passivation_(chemistry)

    The conditions necessary, but not sufficient, for passivation are recorded in Pourbaix diagrams. Some corrosion inhibitors help the formation of a passivation layer on the surface of the metals to which they are applied. Some compounds, dissolved in solutions (chromates, molybdates) form non-reactive and low solubility films on metal surfaces.

  6. Platinum group - Wikipedia

    en.wikipedia.org/wiki/Platinum_group

    The platinum-group metals [a] (PGMs) are six noble, precious metallic elements clustered together in the periodic table. These elements are all transition metals in the d-block (groups 8, 9, and 10, periods 5 and 6). [1] The six platinum-group metals are ruthenium, rhodium, palladium, osmium, iridium, and platinum.

  7. File:Fe-pourbaix-diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:Fe-pourbaix-diagram.svg

    Pourbaix diagram of iron in uncomplexed media (anions other than OH-not considered). Ion concentration 0.001 m (mol/kg water). Temperature 25°C. Date: 23 October 2007: Source: self-made, with data from software FactSage version 5.3. Author: Metallos

  8. Iron(III) oxide - Wikipedia

    en.wikipedia.org/wiki/Iron(III)_oxide

    Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2. Another redox reaction is the extremely exothermic thermite reaction with aluminium. [17] 2 Al + Fe 2 O 3 → 2 Fe + Al 2 O 3. This process is used to weld thick metals such as rails of train tracks by using a ceramic container to funnel the molten iron in between two sections of rail.

  9. File:D-pourbaix-Zn.svg - Wikipedia

    en.wikipedia.org/wiki/File:D-pourbaix-Zn.svg

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