Effects of Dwell Time Sintering on Microstructure, Piezoelectric and Mechanical Properties of Modified BNT-Based Ceramics

Abstract:

The properties of modified Bi_0.5Na_0.5TiO₃ (BNT) based lead-free ceramics were investigated. The BNT-based ceramics were prepared by a two-steps sintering method. The ceramics were sintered at T₁=1373 K and T₂= 1173 K for various dwell times (0, 2, 4, and 8h). The properties of the ceramics were characterized by many techniques. The ceramic samples exhibited a pure perovskite phase with rhombohedral symmetry. The microstructural analysis by a scanning electron microscopy (SEM), indicated that all ceramics had a similar microstructure. Piezoelectric and mechanical properties of the ceramics were improved at a suitable dwell time at T₂.

• Periodical: Key Engineering Materials (Volumes 675-676)
• Pages: 544-547
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.675-676.544
• Online since: January 2016
• Authors: Supalak Manotham*, Thanatep Phatungthane, Tawee Tunkasiri, Komsanti Chokethawat
• Keywords: BNT, Mechanical Properties, Piezoelectric

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