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Metal dusting of Fe3Al and (Fe,Ni)3Al

✍ Scribed by S. Strauß; R. Krajak; M. Palm; H. J. Grabke

Publisher
John Wiley and Sons
Year
1996
Tongue
German
Weight
434 KB
Volume
47
Category
Article
ISSN
0947-5117

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✦ Synopsis

Abstract

Metal dusting is a deterioration of metallic materials in strongly carburizing atmospheres under disintegration into a dust of carbon and fine metal particles (coke). The intermetallic compound Fe~3~Al is also very susceptible to metal dusting and disintegrates under formation of vast amounts of coke. The mechanism corresponds to the metal dusting of iron and steels, Fe~3~C is formed as an intermediate and the Al is oxidized. With increasing Cr‐addition and with increasing Ni‐content in alloys (Fe,Ni)~3~Al‐Cr the materials become more resistant, Ni~3~Al is not attacked by metal dusting.

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