The influence of silicon as a possible reactive element in the protection against high temperature oxidation of AISI 304 stainless steel
Keywords:High temperature oxidation, Stainless steel, Ionic implantion
The influence of silicon incorporated into the alloy by means of ion implantation of 1 x 1015 ions/cm2 at 150 keV on the protective scale development based upon Cr1,3Fe0,7O3 and manganese-enriched spinels, Mn1,5Cr1,5O4 after oxidation of an austenitic AISI 304 stainless steel at 1,173 K and atmospheric pressure of air for 144 h has been studied. The presence of small quantities of silicon at the outermost layers of the alloy promotes transport of chromium during the early stages of oxidation. Further, ion implantation seems to play a beneficial role against decarburization of the alloy.
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