caa a22 4500 467995931 CHVBK 20180323112557.0 cr unu---uuuuu 170328e19900101xx s 000 0 eng 10.1007/BF01244164 doi (NATIONALLICENCE)springer-10.1007/BF01244164 SIMS investigations on the growth mechanisms of protective chromia and alumina surface scales [Elektronische Daten] [Horst Beske, Willem Quadakkers, Horst Holzbrecher, Hans Schuster, Hubertus Nickel] The oxidation behaviour of the oxide-dispersion strengthened (ODS) high-temperature alloys MA 956 (an aluminium oxide former) and MA 754 (a chromium oxide former) has been compared with that of two model alloys, Fe-20Cr-5Al and Ni-25Cr. The morphology and composition of the oxide scales were investigated by metallography, X-ray diffraction analysis and scanning electron microscopy. For analysis of the oxide layer growth mechanisms, twostage oxidation experiments with18O as tracer were used, the distribution of the oxygen isotopes in the oxide scale being determined by SIMS. The ODS alloys show a more selective oxidation than the two model alloys; moreover, the protective oxides on the ODS alloys have a lower growth rate and better adhesion than those on the two model alloys. From the SIMS investigations it can be deduced that the improved properties of the layers on the ODS alloys result from a change in the transport processes in the protective layer; whereas the aluminium and chromium oxide films on the conventional alloys grow by cation and anion transport, the scales on the ODS alloys grow almost exclusively by anion transport. It is shown that the observed properties of the oxide scales on the ODS alloys can be explained by this change in transport mechanism. Springer-Verlag, 1990 ODS alloys nationallicence growth mechanism nationallicence oxide scales nationallicence SIMS nationallicence oxygen-tracer nationallicence Beske Horst Zentralabteilung für Chemische Analysen, Forschungszentrum Jülich GmbH, P. O. Box 1913, D-5170, Jülich, Federal Republic of Germany aut Quadakkers Willem Institut für Reaktorwerkstoffe, Forschungszentrum Jülich GmbH, P. O. Box 1913, D-5170, Jülich, Federal Republic of Germany aut Holzbrecher Horst Institut für Reaktorwerkstoffe, Forschungszentrum Jülich GmbH, P. O. Box 1913, D-5170, Jülich, Federal Republic of Germany aut Schuster Hans Institut für Reaktorwerkstoffe, Forschungszentrum Jülich GmbH, P. O. Box 1913, D-5170, Jülich, Federal Republic of Germany aut Nickel Hubertus Institut für Reaktorwerkstoffe, Forschungszentrum Jülich GmbH, P. O. Box 1913, D-5170, Jülich, Federal Republic of Germany aut Microchimica Acta Springer-Verlag 101/1-6(1990-01-01), 109-119 0026-3672 101:1-6<109 1990 101 604 https://doi.org/10.1007/BF01244164 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01244164 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Beske Horst Zentralabteilung für Chemische Analysen, Forschungszentrum Jülich GmbH, P. O. Box 1913, D-5170, Jülich, Federal Republic of Germany aut NATIONALLICENCE 700 1- Quadakkers Willem Institut für Reaktorwerkstoffe, Forschungszentrum Jülich GmbH, P. O. Box 1913, D-5170, Jülich, Federal Republic of Germany aut NATIONALLICENCE 700 1- Holzbrecher Horst Institut für Reaktorwerkstoffe, Forschungszentrum Jülich GmbH, P. O. Box 1913, D-5170, Jülich, Federal Republic of Germany aut NATIONALLICENCE 700 1- Schuster Hans Institut für Reaktorwerkstoffe, Forschungszentrum Jülich GmbH, P. O. Box 1913, D-5170, Jülich, Federal Republic of Germany aut NATIONALLICENCE 700 1- Nickel Hubertus Institut für Reaktorwerkstoffe, Forschungszentrum Jülich GmbH, P. O. Box 1913, D-5170, Jülich, Federal Republic of Germany aut NATIONALLICENCE 773 0- Microchimica Acta Springer-Verlag 101/1-6(1990-01-01), 109-119 0026-3672 101:1-6<109 1990 101 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer