Niobium-titanium oxide powders obtained by laser-induced synthesis: Microstructure and structure evolution from diffraction data
L.E. Depero*, L. Sangaletti*, B. Allieri*, E. Bontempi*, R. Salari*, M. Zocchi*, C. Casale+, M. Notaro+
(*Università di Brescia, +CISE Tecnologie Innovative S.p.A.)
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 Ti_1-xNb_xO₂ (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.
Keywords: ceramics; catalytic materials; phase transformation
Order No.: JA806-028 © 1998 MRS

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