Titlebook: Introduction to Corrosion Science; Edward McCafferty Textbook 2010 Springer-Verlag New York 2010 Corrosion Science.Diffusion.Ion.Pourbaix

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Thermodynamics of Corrosion: Electrochemical Cells and Galvanic Corrosion,The previous chapter has dealt largely with the corrosion thermodynamics of half-cell reactions for single metals. This chapter considers the effect of coupling two half-cells to form an electrochemical cell. The galvanic corrosion of coupled dissimilar metals is also treated in this chapter.

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Beneficial Aspects of Corrosion,Throughout this text we have considered corrosion to be a troublesome or dangerous process. And indeed it is! Chapter 1 has discussed the impact of corrosion on health and safety, on wastage of materials, and on economic loss.

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A Brief Review of Thermodynamics,e working toward the treatment of galvanic corrosion and the construction and analysis of Pourbaix diagrams. As will be seen in Chapter 6, Pourbaix diagrams are useful diagrams to summarize concisely the corrosion behavior of a given metal.

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Thermodynamics of Corrosion: Pourbaix Diagrams,al–pH diagram. These diagrams indicate certain regions of potential and pH where the metal undergoes corrosion and other regions of potential and pH where the metal is protected from corrosion. Such diagrams are usually called “Pourbaix diagrams” but are sometimes called “equilibrium diagrams” becau

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Kinetics of Corrosion,tems. However, Pourbaix diagrams do not give any information as to corrosion rates. Although a given reaction may be spontaneous, it does not necessarily proceed at a fast rate. The reaction may in fact proceed “slowly” rather than “quickly”, but we cannot determine this difference from thermodynami

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Concentration Polarization and Diffusion,n Chapter 7 were for metals corroding in acid solutions, in which the cathodic reaction is the evolution of hydrogen, a reaction which usually proceeds under activation control. As was also discussed in Chapter 7, a second major type of polarization process is ., in which the electrode is polarized