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Altering the Oxidation Resistance of Iron Via ion Beam Alloying

Published online by Cambridge University Press:  16 February 2011

Ivan H. Murzin  and
Donald I. Potter
Ivan H. Murzin
Affiliation:
Metallurgy Department and Institute of Materials Science, The University of Connecticut, Storrs, CT 06269-3136
Donald I. Potter
Affiliation:
Metallurgy Department and Institute of Materials Science, The University of Connecticut, Storrs, CT 06269-3136
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Abstract

Fe-Cr, Fe-Y and Fe-Cr-Y surface alloys were produced by direct ion implantation, ion beam mixing, and combinations of implantation and vapor deposition. The influence of these treatments on the oxidation behavior of iron was investigated in 1 atm. of oxygen at 520°C. The oxidation rates were less in all the ion beam alloyed iron samples than in untreated iron. The oxidation follows parabolic kinetics in most cases, with the rate constants, Kp, in the range (3-8)×10−6 mg2cm−4 sec−l versus 2.2×10−5 mg2 cm−4 sec−1 for untreated iron. Yttrium fluences between 5×1014 and 5×lO15 cm−2 did not alter the microstructures of iron significantly. However, fluences of 1×1016, 3×1016, 5x1016 and 1x1017 cm−2 caused the crystalline structure of iron to be replaced by an amorphous phase. The presence of this phase was demonstrated with selected area channeling patterns and transmission electron microscopy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 373: Symposium Y – Microstructure of Irradiated Materials , 1994 , 249
Copyright
Copyright © Materials Research Society 1995

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References

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