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http://dx.doi.org/10.4313/JKEM.2015.28.1.12

Microstructures and Electrical Properties of (Na,K)NbO3 Piezoceramics with Various Solvents at Milling Process  

Lim, Ju-Hee (Department of Materials Science and Engineering, Korea National University of Transportation)
Lee, Gwang-Su (Department of Materials Science and Engineering, Korea National University of Transportation)
Ryu, Sung-Lim (Department of Materials Science and Engineering, Korea National University of Transportation)
Kweon, Soon-Yong (Department of Materials Science and Engineering, Korea National University of Transportation)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.28, no.1, 2015 , pp. 12-16 More about this Journal
Abstract
$(Na,K)NbO_3$-based piezoelectric ceramics were synthesized by a solid phase sintering method with various milling solvents. The solvents were varied with acetone, ethanol, and pure water to investigate the effect on the microstructure and electrical properties. NKN ceramics showed the maximum values of the relative density (94%), the mechanical quality factor (Qm: 78) and the electro-mechanical coupling factor ($k_p$: 0.25) at the ethanol solvent. It might mean that a solid phase sintering of the NKN piezoelectrics with a suitable solvent could improve the relative density and the piezoelectric properties.
Keywords
$(Na,K)NbO_3$ ceramics; Piezoelectric properties; Microstructure; Solvent;
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