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Tagged with corrosion physical-chemistry
2
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Rate of cathodic reaction vs Tafel slope
One of my reference engineering books says that for the cathodic protection process (in seawater):
Al $\rightarrow$ Al$^{3+}$ + $3e^-$ (anode, setting the protection potential at about -900 mV SCE)
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4
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Why do old black and white photos fade?
I understand why photos based on organic dyes would fade (discussed previously). But photos based on metallic silver fade as well such as like the one shown below. As a metal (a fairly stable one at ...