The elemental distribution in the oxide scale on a conventionally cast and a metallurgical ODS FeCrAl alloy characterized by ToF-SIMS
Paper in proceedings, 2014

The commercial FeCrAl alloys Kanthal APMT(TM) (powder metallurgical) and Kanthal AF(TM) (conventionally cast) contain reactive elements (RE) to improve scale properties. These alloys were oxidized at 1100 degrees C for 168h to form a protective alumina scale. These scales were then investigated with Time of flight secondary ion mass spectrometry to examine the distribution of the REs. The results showed an accumulation of Y, Zr, Mg and Mo in the outermost part of the oxide scales on both alloys. Low levels of these elements were also detected in the oxide scales. In addition, Mo was accumulated together with Cr in the oxide of APMT.

alumina

scale

distribution

FeCrAl

oxidation

reactive elements (RE)

Author

Per Malmberg

University of Gothenburg

Kristina M Hellström

Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry

Surface and Interface Analysis

0142-2421 (ISSN) 1096-9918 (eISSN)

Vol. 46 S1 281-284

Subject Categories

Physical Chemistry

Environmental Sciences

DOI

10.1002/sia.5638

More information

Latest update

2/21/2018