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Title: | Glass-formation and corrosion properties of Fe-Cr-Mo-C-B glassy ribbons with low Cr content | Authors: | Madinehei, M. Bruna, P. Duarte, M. J. Pineda, E. Klemm, J. RENNER, Frank |
Issue Date: | 2014 | Publisher: | ELSEVIER SCIENCE SA | Source: | JOURNAL OF ALLOYS AND COMPOUNDS, 615 (S1), p. S128-S131 | Abstract: | The effect of low amounts of Cr on glass forming ability and corrosion behavior of Fe(65-x)CrxMo14C15B6 (x = 0, 2, 4, 6, 8,10 at.%) ribbons have been studied. It was found that the reduced glass transition temperature (T-rg) do not change significantly with Cr content. The glass forming ability (GFA) of this system is evaluated by the gamma(m), delta and omega parameters and the alloys containing 4 and 6 at.% were found to be the best glass formers in this system. The temperature interval of the supercooled liquid region (Delta T-x) changed with Cr and was enlarged from 35 K at x = 0 to 50 K at x = 4. Corrosion rates measured by immersion tests in H2SO4 decreased with an increase of chromium content in the alloys. The electrochemical measurements indicate that the alloys containing more than 4 at.% of Cr are spontaneously passivated with low current densities in 0.1 N H2SO4 whereas the alloys with Cr content <4 at.% showed transpassive Mo dissolution. In view of these results, the optimal amount of Cr addition in Fe-Mo-C-B amorphous steels is discussed. (C) 2014 Elsevier B.V. All rights reserved. | Notes: | [Madinehei, M.; Bruna, P.] Univ Politecn Cataluna, BarcelonaTech, Dept Fis Aplicada, EPSC, Castelldefels 08860, Spain. [Duarte, M. J.; Klemm, J.; Renner, F. U.] Max Planck Inst Eisenforsch GmbH, Dept Interface Chem & Surface Engn, D-40237 Dusseldorf, Germany. [Pineda, E.] Univ Politecn Cataluna, BarcelonaTech, Dept Fis & Engn Nucl, ESAB, Castelldefels 08860, Spain. [Renner, F. U.] Hasselt Univ, Inst Mat Res IMO, B-63590 Diepenbeek, Belgium. | Keywords: | Fe-based; amorphous alloys; glass forming ability; corrosion;Fe-based; Amorphous alloys; Glass forming ability; Corrosion | Document URI: | http://hdl.handle.net/1942/17861 | ISSN: | 0925-8388 | e-ISSN: | 1873-4669 | DOI: | 10.1016/j.jallcom.2013.12.245 | ISI #: | 000343613600027 | Rights: | © 2014 Elsevier B.V. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2015 |
Appears in Collections: | Research publications |
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