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|Title:||Long-Term, Cyclic Oxidation Behaviour of Alumina- and Chromia-Forming Alloys|
|Authors:||BACHORCZYK Renata; FORDHAM Richard|
|Citation:||DEFECT AND DIFFUSION FORUM vol. 237-240 p. 1107-1114|
|Publisher:||TRANS TECH PUBLICATIONS|
|Type:||Articles in periodicals and books|
|Abstract:||The oxidation resistance behaviour of a number of surface-treated FeCrAl commercial alloys and some model alloys of well-defined composition, incorporating a range of reactive elements in trace amounts, has been studies under thermal cyclic conditions in air with and without additions of water vapour. Additions of reactive elements such as Zr, La, Y, Hf modify the oxidation resistance behaviour of FeCrAl-alloys by improving the scale adherence and consequently may extend the lifetime of FeCrAl steels. The presence of the water vapour can affect oxidation in a number of different ways. Our results may indicate that high content of water vapour can cause the lives of such alloys to be decreased. This work forms part of a larger European-funded project to evaluate physical properties, microstructural features, oxidation/corrosion resistance and lifetime improvement. The correlation bewteen alloy parameters and lifetime; as well as the modeling of oxide scale behaviour as function of cycling conditions is also studied. Keywords: FeCrAl steels, oxidation/corrosion resistance, coatings, aluminium enrichtment|
|JRC Institute:||Energy, Transport and Climate|
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