Study on New Reaction Environment using Piezoelectricity for Ceramic Synthesis

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The influence of the surface charge originated from piezoelectricity on the crystal growth from an aqueous solution was studied in order to propose a new crystal growth technique called by piezoelectric-assisted solution-growth deposition. The sodium titanate layer coated lead-free piezoelectric material (NT-LNKN) soaked in the simulated body fluid (SBF) at temperature as low as 37oC. The apatite phase successfully covered NT-LNKN surface for an immersion period up to 7 days, which indicates that the electric charge of the piezoelectric material has attracted Ca2+ and HPO42- ions on the surface.To develop this fact, BaTiO3 ceramics were also charged with corona discharge gun and immersed into a Zn(CH3COO)2 solution. The microstructure of the ceramic surface revealed precipitants of ZnO, and the larger amount of the precipitants was found on the charged surface in comparison with un-charged surface.