The Effect of Thermal Preoxidation on the Pitting Susceptibility of Steel X18H10T

Zimina, T. Yu.; Tselykh, O.G.; Oshe, E.K.
November 2004
Protection of Metals;Nov/Dec2004, Vol. 40 Issue 6, p577
Academic Journal
The effect of thermal preoxidation of a X18H10T stainless steel in air at temperatures of 100 to 775°C on its susceptibility to pitting is studied. It is shown that the pitting potential of steel depends on the number of defects in the preformed surface thermooxides. Oxidation at 100–300°C forming rhombohedral oxides of α-(Fe,Cr)2O3 type with a small deviation from stoichiometry decreases the pitting susceptibility. Oxidation at higher temperature impairs the corrosion resistance of steel.


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