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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 temperaure 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 responsible for the slow kinetics. For longer air exposures the oxidation processes are determined more by thermodynamics than by kinetics.

Additional information

Authors: NANNI P, Facoltà di Ingegneria, Istituto di Chimica, Genova (IT);BUSCAGLIA V, ICFAM-CNR, Genova (IT);BATTILANA G, ICFAM-CNR, Genova (IT);RUEDL E, JRC Ispra (IT)
Bibliographic Reference: Article: Journal of Nuclear Materials, Vol. 182 (1991) pp. 118-127
Record Number: 199210150 / Last updated on: 1994-12-02
Original language: en
Available languages: en