MCs(+)-SIMS studies concerning the effect of Y surface modification on the oxidation behaviour of Cr-based ODS alloys
The oxidation behaviour of the ODS alloy Cr5Fe1Y(2)O(3) prepared by 2 different manufacturing techniques was studied in Air and Ar/H(2)/H(2)O at 1000 C. TEM studies revealed that the oxidation rate of the Cr-based ODS material depends on the yttria content, but even more on its distribution. Transport of Y from the alloy to the scale occurs through dispersions which become embedded in the inward growing scale and/or by transport of Y along structural defects in the alloy. Because of the low rate of Y-incorporation in the scale, the alloys exhibit high initial oxidation rates. Enrichment of the alloy surface by Y implantation markedly improved the early stages of the oxidation process.
Bibliographic Reference: Article: Entwicklung und Anwendung massenspektrometrischer Methoden zur Spuren-, Ultraspuren-, Isotopen- und Oberflächenanalytik für Forschungs aufgaben des Forschungszentrum Jülich (1996)
Record Number: 199611395 / Last updated on: 1996-12-18
Original language: en
Available languages: en