Synthesis, formation and characterization of lead zinc niobate–lead zirconate titanate powders via a rapid vibro-milling method
In this study, an approach to synthesizing pyrochlore-free lead zinc niobate – lead zirconate titanate powders with a formula xPb(Zn1/3Nb2/3)O3–(1 − x)Pb(Zr1/2Ti1/2)O3 (when x = 0.1–0.5) by a mixed oxide synthetic route via a rapid vibro-milling has been developed. The formation of perovskite phase in calcined PZN-PZT powders has been investigated as a function of calcination temperature by TG-DTA and XRD techniques. Powder morphology and chemical composition have been determined with SEM and EDX techniques. The potential of a vibro-milling technique as a significant time-saving method to obtain single-phase PZN-PZT powders at low calcination temperature is also discussed. The results indicate that at calcination condition of 900 °C for 2 h, with heating/cooling rates of 20 °C/min single-phase PZN-PZT powders can be obtained for every composition ratio between x = 0.1–0.5.
KeywordsPhase formation Calcination Vibro-milling Lead zinc niobate Lead zirconate titanate
The authors are grateful to the Thailand Research Fund (TRF), Commission on Higher Education (CHE), The Royal Golden Jubilee Ph.D. program, Graduate School and Faculty of Science, Chiang Mai University, and Ministry of University Affairs of Thailand for financial support.
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