Oxidation tests have been conducted with samples of the Mn-Cr austenitic steel AMCR 0033 to evaluate the behaviour of this material in a fusion reactor in the case of abnormal heating. The tests were carried out in dry air at 1073 and 1273 K up to 20 h and at 1473 K up to 5 h. It was found that the initial experimental conditions strongly influence the oxidation. Slow heating to the test temperature in a moderate vacuum leads to the formation of thin scales which define the oxidation, whereas quick temperature increases in a high vacuum cause preferential Mn evaporation which is probably responsable for the slow kinetics. For longer air exposures the oxidation processes are determined more by thermodynamics than by kinetics.
Air oxidation of a Mn-Cr austenitic steel of potential use for fusion reactor structural applications between 1073 and 1473 K at 105 Pa
Buscaglia V;Battilana G;
1991
Abstract
Oxidation tests have been conducted with samples of the Mn-Cr austenitic steel AMCR 0033 to evaluate the behaviour of this material in a fusion reactor in the case of abnormal heating. The tests were carried out in dry air at 1073 and 1273 K up to 20 h and at 1473 K up to 5 h. It was found that the initial experimental conditions strongly influence the oxidation. Slow heating to the test temperature in a moderate vacuum leads to the formation of thin scales which define the oxidation, whereas quick temperature increases in a high vacuum cause preferential Mn evaporation which is probably responsable for the slow kinetics. For longer air exposures the oxidation processes are determined more by thermodynamics than by kinetics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
