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Niobium-titanium oxide powders obtained by laser-induced synthesis: Microstructure and structure evolution from diffraction data

Published online by Cambridge University Press:  31 January 2011

Laura E. Depero,
Luigi Sangaletti,
Brigida Allieri,
Elza Bontempi,
Roberto Salari,
Marcello Zocchi,
Cristina Casale and
Maurizio Notaro
Laura E. Depero*
Affiliation:
Istituto Nazionale per la Fisica della Materia and Dipartimento di Chimica e Fisica per l'Ingegneria e per i Materiali, Università di Brescia, Via Branze 38–25123 Brescia, Italy
Luigi Sangaletti
Affiliation:
Istituto Nazionale per la Fisica della Materia and Dipartimento di Chimica e Fisica per l'Ingegneria e per i Materiali, Università di Brescia, Via Branze 38–25123 Brescia, Italy
Brigida Allieri
Affiliation:
Istituto Nazionale per la Fisica della Materia and Dipartimento di Chimica e Fisica per l'Ingegneria e per i Materiali, Università di Brescia, Via Branze 38–25123 Brescia, Italy
Elza Bontempi
Affiliation:
Istituto Nazionale per la Fisica della Materia and Dipartimento di Chimica e Fisica per l'Ingegneria e per i Materiali, Università di Brescia, Via Branze 38–25123 Brescia, Italy
Roberto Salari
Affiliation:
Istituto Nazionale per la Fisica della Materia and Dipartimento di Chimica e Fisica per l'Ingegneria e per i Materiali, Università di Brescia, Via Branze 38–25123 Brescia, Italy
Marcello Zocchi
Affiliation:
Istituto Nazionale per la Fisica della Materia and Dipartimento di Chimica e Fisica per l'Ingegneria e per i Materiali, Università di Brescia, Via Branze 38–25123 Brescia, Italy
Cristina Casale
Affiliation:
CISE Tecnologie Innovative S.p.A., P.O. Box 12081, Milano, Italy
Maurizio Notaro
Affiliation:
CISE Tecnologie Innovative S.p.A., P.O. Box 12081, Milano, Italy
*
a)Address correspondence to this author.
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Abstract

The influence of the niobium content on the anatase-to-rutile phase transition in nanopowders of Nb–Ti oxides was studied and the changes in the particle size and microstrain distribution obtained at different temperatures were analyzed. A correlation is found between the initial microstructure in the Ti1 – xNbxO2 (x = 0.03, 0.2) powder and the niobium content. The presence of Nb was found to inhibit the growth of both the anatase and the rutile phases.

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Type
Articles
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Journal of Materials Research , Volume 13 , Issue 6 , June 1998, pp. 1644 - 1649
Copyright
Copyright © Materials Research Society 1998

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References

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