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Structural and electrochemical properties of Ti–Ru–Fe–O alloys prepared by high energy ball-milling

Published online by Cambridge University Press:  31 January 2011

S-H. Yip ,
D. Guay ,
S. Jin ,
E. Ghali ,
A. Van Neste  and
R. Schulz
S-H. Yip
Affiliation:
INRS-Énergie et Matériaux, 1650 Blvd. Lionel-Boulet, Varennes, Québec, Canada J3X 1S2
D. Guay
Affiliation:
INRS-Énergie et Matériaux, 1650 Blvd. Lionel-Boulet, Varennes, Québec, Canada J3X 1S2
S. Jin
Affiliation:
Department of Mining and Metallurgy, Laval University, Ste-Foy, Québec, Canada G1K 7P4
E. Ghali
Affiliation:
Department of Mining and Metallurgy, Laval University, Ste-Foy, Québec, Canada G1K 7P4
A. Van Neste
Affiliation:
Department of Mining and Metallurgy, Laval University, Ste-Foy, Québec, Canada G1K 7P4
R. Schulz
Affiliation:
Technologie des Matériaux, Institut de recherche d'Hydro-Québec, 1800 Blvd. Lionel-Boulet, Varennes, Québec, Canada J3X 1S1
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Abstract

The structural and electrochemical properties of the Ti–Ru–Fe–O system have been studied over the whole ternary metal compositional range, keeping constant the oxygen content at 30 at.%. The phase diagram was explored systematically by varying the composition of the material along one of the following axes: (i) constant Ru content of 16 at. %; (ii) constant Ti/Ru ratio of 2; (iii) constant Ti/Fe ratio of 1.6. For O/Ti ratios equal or below unity, the most prominent peaks observed in the x-ray diffraction patterns belong to a B2 structure. For O/Ti ratio larger than unity, stable titanium oxide phases are formed, which coexist with a cubic Fe-like or hcp-Ru like phases depending on the Fe/Ru ratio. Powder compositions with stoichiometry close to Ti2RuFeO2 are of interest due to good electrocatalytic properties, long-term stability, and low Ru content.

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Type
Articles
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Journal of Materials Research , Volume 13 , Issue 5 , May 1998 , pp. 1171 - 1176
Copyright
Copyright © Materials Research Society 1998

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