Direct Synthesis of A2(Ti1-yZry)2O7 (A = Gd3+, Y3+) Solid Solutions by Ball Milling Constituent Oxides
K.J. Moreno; R. Silva Rodrigo; A.F. Fuentes. Direct Synthesis of A2(Ti1-yZry)2O7 (A = Gd3+, Y3+) Solid Solutions by Ball Milling Constituent Oxides. Journal of Alloys and Compounds (ISSN: 0925-8388). 2005, Vol. 390, p. 230-2005.
Different compositions in two solid solutions,A2(Ti(1−y)Zry)2O7 (A=Gd3+, Y3+), with high oxygen ion conductivity, have been successfully prepared at room temperature via mechano-chemical synthesis. Stoichiometric mixtures of the constituent oxides were milled in a planetary ball mill by using zirconia vials and balls. Chemical changes in the powder mixtures as a function of composition and milling time were followed by using X-ray diffraction showing that in all cases and after milling for 19 h, the powders consisted of a single phase. Powders were also examined by scanning electron microscopy (SEM) finding out that they basically consist of sub-micron size agglomerates and aggregates of nanoparticles.
Different compositions in two solid solutions,A2(Ti(1−y)Zry)2O7 (A=Gd3+, Y3+), with high oxygen ion conductivity, have been successfully prepared at room temperature via mechano-chemical synthesis. Stoichiometric mixtures of the constituent oxides were milled in a planetary ball mill by using zirconia vials and balls. Chemical changes in the powder mixtures as a function of composition and milling time were followed by using X-ray diffraction showing that in all cases and after milling for 19 h, the powders consisted of a single phase. Powders were also examined by scanning electron microscopy (SEM) finding out that they basically consist of sub-micron size agglomerates and aggregates of nanoparticles.