| The effect of alloying elements on oxidation resistance has been studied using six ferrous alloys with varying Cr, Ni and C contents. The alloys chosen to study the Cr effect were alloys T22, T91, MA956 which have the Cr concentrations of 2.3, 8.6, and 20.0%, respectively. The alloys show that with the increase in the Cr content the activation energy increases which is an indication of higher oxidation resistance.;The alloys used to study the Ni effect were MA956, 253MA, Incoloy 800 which have the Ni contents of 0.0, 10.9, and 31.7%, respectively. Oxidation studies on these alloys show that with the increase in the Ni content the activation energy decrease which leads to the decrease in oxidation resistance.;The alloys used to study the C effect were MA956, APMT, T91 which have the C contents of 0.0, 0.04, and 0.08%, respectively. Carbon enhances the oxidation in steels and therefore decreases the oxidation resistance. It is based on the results of the oxidation curves and determination of activation energy. |
