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Mechanochemical synthesis of MgTa2O6 ceramic
Authors:A. Mergen
Affiliation:Marmara University, Metallurgical and Materials Engineering Department, Goztepe Campus, 34722 Kadiköy, ?stanbul, Turkey
Abstract:
MgTa2O6 powders were prepared by mechanochemical synthesis from MgO and Ta2O5 in a planetary ball mill in air atmosphere using steel vial and steel balls. High-energy ball milling gave nearly single-phase MgTa2O6 after 8 h of milling time. Annealing of high-energy milled powder at various temperatures (700–1200 °C) indicated that high-energy milling speed up the formation and crystallization of MgTa2O6 from the amorphous mixture. The powder derived from 8 h of mechanical activation gave a particle size of around 28 nm. Although at low-annealing temperatures the grain size was almost the same as-milled powder, the grain size increased with annealing temperature reaching to around 1–2 μm after annealing at 1200 °C for 8 h.
Keywords:B. X-ray methods   MgTa2O6   Mechanochemical synthesis   High-energy milling
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