Oxidation

Oxidation is the most commonly encountered mode of dry corrosion. As presented in theoretical articles, ensuring a satisfactory service life (often $t\gg 1000\text{h}$ ) at temperatures above 550°C, requires promoting the formation of one of the following protective layers: chromine (Cr ₂ O ₃ ), alumina (Al ₂ O ₃ ) or silica (SiO ₂ ) in which metal and oxygen diffusion are low enough to guarantee an acceptable corrosion rate. Under isothermal conditions, Cr ₂ ...