Effect of particle size distribution on microstructure and piezoelectric properties of MnO2-added 0.95(K0.5Na0.5) NbO3-0.5BaTiO3 ceramics

Cheol Woo Ahn; Sahn Nahm; Myong Jae Yoo; Hyeung Gyu Lee; Shashank Priya

doi:10.1007/s10853-008-2910-9

Effect of particle size distribution on microstructure and piezoelectric properties of MnO₂-added 0.95(K_0.5Na_0.5) NbO₃-0.5BaTiO₃ ceramics

Cheol Woo Ahn, Sahn Nahm, Myong Jae Yoo, Hyeung Gyu Lee, Shashank Priya

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

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Abstract

The effect of particle size distribution on the microstructure and piezoelectric properties of MnO₂-added 0.95(K_0.5Na _0.5)NbO₃-0.5BaTiO₃ (KNN-BT) ceramics has been explored. It is known that the packing density of a green body is dependent on the ration of small to large particles present in the mixture. It was established that the rate of reaction is inversely proportional to the square of particle size. It was also suggested that commercial alkali powders require significant reduction in particle size before being used to form the green body to avoid agglomeration. It was observed that for KNN-BT ceramics, a higher density can be obtained by using higher content of smaller size particles in the green body. It was also proposed that enhanced piezoelectric properties in these lead-free ceramics can be achieved by using 100% particles of size less than 0.3 μm in the green body.

Original language	English (US)
Pages (from-to)	6016-6019
Number of pages	4
Journal	Journal of Materials Science
Volume	43
Issue number	17
DOIs	https://doi.org/10.1007/s10853-008-2910-9
State	Published - Sep 2008

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Ceramics and Composites
Mechanical Engineering
Polymers and Plastics
General Materials Science
Materials Science (miscellaneous)

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title = "Effect of particle size distribution on microstructure and piezoelectric properties of MnO2-added 0.95(K0.5Na0.5) NbO3-0.5BaTiO3 ceramics",

abstract = "The effect of particle size distribution on the microstructure and piezoelectric properties of MnO2-added 0.95(K0.5Na 0.5)NbO3-0.5BaTiO3 (KNN-BT) ceramics has been explored. It is known that the packing density of a green body is dependent on the ration of small to large particles present in the mixture. It was established that the rate of reaction is inversely proportional to the square of particle size. It was also suggested that commercial alkali powders require significant reduction in particle size before being used to form the green body to avoid agglomeration. It was observed that for KNN-BT ceramics, a higher density can be obtained by using higher content of smaller size particles in the green body. It was also proposed that enhanced piezoelectric properties in these lead-free ceramics can be achieved by using 100% particles of size less than 0.3 μm in the green body.",

author = "Ahn, {Cheol Woo} and Sahn Nahm and Yoo, {Myong Jae} and Lee, {Hyeung Gyu} and Shashank Priya",

note = "Funding Information: Fig. 4 SEM images of MP1 specimens sintered at 1,100 °C for 2 h and MP2 specimens sintered at 1,050 °C for 2 h: (a) MP1, x = 0.0 (b) MP1, x = 0.9, (c) MP2, x = 0.0, and (d) MP2, x = 0.5 Acknowledgements The authors (C.-W. A. and S. P.) gratefully acknowledge the financial support from Office of Basic Energy Science, Department of Energy.",

year = "2008",

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doi = "10.1007/s10853-008-2910-9",

language = "English (US)",

volume = "43",

pages = "6016--6019",

journal = "Journal of Materials Science",

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AU - Ahn, Cheol Woo

AU - Nahm, Sahn

AU - Yoo, Myong Jae

AU - Lee, Hyeung Gyu

AU - Priya, Shashank

N1 - Funding Information: Fig. 4 SEM images of MP1 specimens sintered at 1,100 °C for 2 h and MP2 specimens sintered at 1,050 °C for 2 h: (a) MP1, x = 0.0 (b) MP1, x = 0.9, (c) MP2, x = 0.0, and (d) MP2, x = 0.5 Acknowledgements The authors (C.-W. A. and S. P.) gratefully acknowledge the financial support from Office of Basic Energy Science, Department of Energy.

PY - 2008/9

Y1 - 2008/9

N2 - The effect of particle size distribution on the microstructure and piezoelectric properties of MnO2-added 0.95(K0.5Na 0.5)NbO3-0.5BaTiO3 (KNN-BT) ceramics has been explored. It is known that the packing density of a green body is dependent on the ration of small to large particles present in the mixture. It was established that the rate of reaction is inversely proportional to the square of particle size. It was also suggested that commercial alkali powders require significant reduction in particle size before being used to form the green body to avoid agglomeration. It was observed that for KNN-BT ceramics, a higher density can be obtained by using higher content of smaller size particles in the green body. It was also proposed that enhanced piezoelectric properties in these lead-free ceramics can be achieved by using 100% particles of size less than 0.3 μm in the green body.

AB - The effect of particle size distribution on the microstructure and piezoelectric properties of MnO2-added 0.95(K0.5Na 0.5)NbO3-0.5BaTiO3 (KNN-BT) ceramics has been explored. It is known that the packing density of a green body is dependent on the ration of small to large particles present in the mixture. It was established that the rate of reaction is inversely proportional to the square of particle size. It was also suggested that commercial alkali powders require significant reduction in particle size before being used to form the green body to avoid agglomeration. It was observed that for KNN-BT ceramics, a higher density can be obtained by using higher content of smaller size particles in the green body. It was also proposed that enhanced piezoelectric properties in these lead-free ceramics can be achieved by using 100% particles of size less than 0.3 μm in the green body.

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Effect of particle size distribution on microstructure and piezoelectric properties of MnO₂-added 0.95(K_0.5Na_0.5) NbO₃-0.5BaTiO₃ ceramics

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