The Mechanochemical Synthesis of NaNbO3 Using Different Ball-Impact Energies
We studied the mechanochemical synthesis of NaNbO3 from a starting-powder mixture of sodium carbonate and Nb2O5 using ball-impact energies of 15 and 370 mJ/hit. Based on the results of a quantitative phase analysis we propose a mechanism for the mechanochemical synthesis of NaNbO3. During milling a condition is established, where the amounts of perovskite, X-ray diffraction -amorphous phase and residual carbonate in the mixture do not change with increasing milling time. Similarly, the NaNbO3 crystallite size and the quantity of microstrains reach final values that are independent of the applied ball-impact energy.
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Document Type: Research Article
Affiliations: Jožef Stefan Institute, SI-1000, Ljubljana, Slovenia
Publication date: May 1, 2008