Effect of CuO on the sintering temperature and piezoelectric properties of lead-free 0.95(Na0.5K0.5)NbO3-0.05CaTiO3 ceramics

Seok Jung Park; Hwi Yeol Park; Kyung Hoon Cho; Sahn Nahm; Hyeung Gyu Lee; Duk Hee Kim; Byung Hyun Choi

doi:10.1016/j.materresbull.2008.01.015

Effect of CuO on the sintering temperature and piezoelectric properties of lead-free 0.95(Na_0.5K_0.5)NbO₃-0.05CaTiO₃ ceramics

Seok Jung Park, Hwi Yeol Park, Kyung Hoon Cho, Sahn Nahm, Hyeung Gyu Lee, Duk Hee Kim, Byung Hyun Choi

Department of Materials Science and Engineering

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

58 Citations (Scopus)

Abstract

The addition of a small amount of CuO to the 0.95(Na_0.5K_0.5)NbO₃-0.05CaTiO₃ (0.95NKN-0.05CT) ceramics sintered at 960 °C for 10 h produced a dense microstructure with large grains due to the liquid phase sintering. Due to the negligible Na₂O evaporation, poling was easy for all specimens sintered at 960 °C. The piezoelectric properties of the specimens were considerably influenced by the relative density, grain size and liquid phase amount. The high piezoelectric properties of d₃₃ = 200 pC/N, k_p = 0.37, ε{lunate}₃^T / ε{lunate}₀ = 1173 and Q_m = 350 were obtained for the 0.95NKN-0.05CT ceramics containing 2.0 mol% CuO sintered at 960 °C for 10 h. Therefore, the 0.95NKN-0.05CT ceramics containing a small amount of CuO are a good candidate material for lead-free piezoelectric ceramics.

Original language	English
Pages (from-to)	3580-3586
Number of pages	7
Journal	Materials Research Bulletin
Volume	43
Issue number	12
DOIs	https://doi.org/10.1016/j.materresbull.2008.01.015
Publication status	Published - 2008 Dec 1

Keywords

A. Ceramics
C. Electron microscopy
C. X-ray diffraction
D. Microstructure
D. Piezoelectricity

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.materresbull.2008.01.015

Cite this

@article{2e757cbc055a438f98d2184d831ec1fa,

title = "Effect of CuO on the sintering temperature and piezoelectric properties of lead-free 0.95(Na0.5K0.5)NbO3-0.05CaTiO3 ceramics",

abstract = "The addition of a small amount of CuO to the 0.95(Na0.5K0.5)NbO3-0.05CaTiO3 (0.95NKN-0.05CT) ceramics sintered at 960 °C for 10 h produced a dense microstructure with large grains due to the liquid phase sintering. Due to the negligible Na2O evaporation, poling was easy for all specimens sintered at 960 °C. The piezoelectric properties of the specimens were considerably influenced by the relative density, grain size and liquid phase amount. The high piezoelectric properties of d33 = 200 pC/N, kp = 0.37, ε{lunate}3T / ε{lunate}0 = 1173 and Qm = 350 were obtained for the 0.95NKN-0.05CT ceramics containing 2.0 mol% CuO sintered at 960 °C for 10 h. Therefore, the 0.95NKN-0.05CT ceramics containing a small amount of CuO are a good candidate material for lead-free piezoelectric ceramics.",

keywords = "A. Ceramics, C. Electron microscopy, C. X-ray diffraction, D. Microstructure, D. Piezoelectricity",

author = "Park, {Seok Jung} and Park, {Hwi Yeol} and Cho, {Kyung Hoon} and Sahn Nahm and Lee, {Hyeung Gyu} and Kim, {Duk Hee} and Choi, {Byung Hyun}",

note = "Funding Information: This work was supported financially by the Medium Term Strategic Technology Development Program of the Korea Ministry of Commerce, Industry and Energy (No. 10028449-2006-11).",

year = "2008",

month = dec,

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doi = "10.1016/j.materresbull.2008.01.015",

language = "English",

volume = "43",

pages = "3580--3586",

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issn = "0025-5408",

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T1 - Effect of CuO on the sintering temperature and piezoelectric properties of lead-free 0.95(Na0.5K0.5)NbO3-0.05CaTiO3 ceramics

AU - Park, Seok Jung

AU - Park, Hwi Yeol

AU - Cho, Kyung Hoon

AU - Nahm, Sahn

AU - Lee, Hyeung Gyu

AU - Kim, Duk Hee

AU - Choi, Byung Hyun

N1 - Funding Information: This work was supported financially by the Medium Term Strategic Technology Development Program of the Korea Ministry of Commerce, Industry and Energy (No. 10028449-2006-11).

PY - 2008/12/1

Y1 - 2008/12/1

N2 - The addition of a small amount of CuO to the 0.95(Na0.5K0.5)NbO3-0.05CaTiO3 (0.95NKN-0.05CT) ceramics sintered at 960 °C for 10 h produced a dense microstructure with large grains due to the liquid phase sintering. Due to the negligible Na2O evaporation, poling was easy for all specimens sintered at 960 °C. The piezoelectric properties of the specimens were considerably influenced by the relative density, grain size and liquid phase amount. The high piezoelectric properties of d33 = 200 pC/N, kp = 0.37, ε{lunate}3T / ε{lunate}0 = 1173 and Qm = 350 were obtained for the 0.95NKN-0.05CT ceramics containing 2.0 mol% CuO sintered at 960 °C for 10 h. Therefore, the 0.95NKN-0.05CT ceramics containing a small amount of CuO are a good candidate material for lead-free piezoelectric ceramics.

AB - The addition of a small amount of CuO to the 0.95(Na0.5K0.5)NbO3-0.05CaTiO3 (0.95NKN-0.05CT) ceramics sintered at 960 °C for 10 h produced a dense microstructure with large grains due to the liquid phase sintering. Due to the negligible Na2O evaporation, poling was easy for all specimens sintered at 960 °C. The piezoelectric properties of the specimens were considerably influenced by the relative density, grain size and liquid phase amount. The high piezoelectric properties of d33 = 200 pC/N, kp = 0.37, ε{lunate}3T / ε{lunate}0 = 1173 and Qm = 350 were obtained for the 0.95NKN-0.05CT ceramics containing 2.0 mol% CuO sintered at 960 °C for 10 h. Therefore, the 0.95NKN-0.05CT ceramics containing a small amount of CuO are a good candidate material for lead-free piezoelectric ceramics.

KW - A. Ceramics

KW - C. Electron microscopy

KW - C. X-ray diffraction

KW - D. Microstructure

KW - D. Piezoelectricity

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