ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The oxidation behavior of Fe-20at.%Cr-10at.%Al alloys with a small amount of anadditional element such as W, Cu, Mn, Nb, Mo, Re, Co or Ti was investigated at 900 ºC for up to625hr. The fourth element addition to the FeCrAl alloy could be classified into two groups;elements (Mn, Nb, Ti) that are contained in the Al2O3 scale, and elements (W, Mo, Re, Co) whichare not present in the scale. In the latter case, the elements (W, Cu) caused scale spallation. Therumpling of alloys with Mn, Nb or Ti was smaller than that of the other alloys. The surface of thealloy with Ti was the smooth. Pt marker experiments suggested that the Al2O3 scale formed on thealloy with Ti grew by inward diffusion of O, whilst the Al2O3 scale formed on the FeCrAl alloygrew by both outward diffusion of Al and inward diffusion of O. This different growth behavior dueto the elements incorporated in the Al2O3 scale could have an effect on the surface rumplingbehavior
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/20/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.595-598.1013.pdf
Permalink