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Corrosion process electron energy bands

Fig. 5.10 Relative band edge diagram for FeS2 and the energy position of some electron donor species. The thermodynamic reactions corresponding to corrosion processes at the anodic and cathodic sides are indicated as decomposition potentials due to holes, fip dec, and to electrons, n,dec> respectively. r]c and are the cathodic and anodic overpotentials, respectively, for the decomposition reaction of pyiite crystals in acid medium. (Reproduced from [159], Copyright 2009, with permission from Elsevier)... Fig. 5.10 Relative band edge diagram for FeS2 and the energy position of some electron donor species. The thermodynamic reactions corresponding to corrosion processes at the anodic and cathodic sides are indicated as decomposition potentials due to holes, fip dec, and to electrons, n,dec> respectively. r]c and are the cathodic and anodic overpotentials, respectively, for the decomposition reaction of pyiite crystals in acid medium. (Reproduced from [159], Copyright 2009, with permission from Elsevier)...
Photosensitivity Many corrosion products possess semiconducting properties. When interacting with photons (see Chapter 1, Volume 6) of higher energy than the band gap of the semiconductor, electron-hole pairs are generated, which change the conditions for chemical reactions in different ways. Yet, there is not ample evidence of photosensitivity in atmospheric corrosion processes. One... [Pg.197]


See other pages where Corrosion process electron energy bands is mentioned: [Pg.227]    [Pg.254]    [Pg.662]    [Pg.212]    [Pg.282]    [Pg.245]    [Pg.86]    [Pg.557]    [Pg.128]    [Pg.251]    [Pg.245]   
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