Sintering characteristic and piezoelectric properties of lead-free (K0.5Na0.5)NbO3-LiNbO3 ceramics

Fu Sheng Tang; Hong Liang Du; Dai Jun Liu; Fa Luo; Wan Cheng Zhou

Sintering characteristic and piezoelectric properties of lead-free (K_0.5Na_0.5)NbO₃-LiNbO₃ ceramics

Fu Sheng Tang
, Hong Liang Du
, Dai Jun Liu
, Fa Luo
, Wan Cheng Zhou

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

18 引用（Scopus）

摘要

Lead-free (1-x)(1-x) (K_0.5Na_0.5) NbO₃-xLiNbO₃ piezoelectric ceramics were prepared by a traditional ceramic processing. The sintering characteristic, the microstructure and electrical properties of (1-x) (K_0.5Na_0.5) NbO₃-LiNbO₃ ceramics were investigated. Results show that all specimens exhibit a pure perovskite structure and the phase structure at room temperature transforms from orthorhombic to tetragonal with the increase of LiNbO3.The microstructure of (1-x) (K_0.5Na_0.5) NbO₃-LiNbO₃ ceramics exhibits apparent difference due to different amounts of LiNbO₃. The sinterability of (1-x) (K_0.5Na_0.5) NbO₃-LiNbO₃ is improved and the sintering temperature is lower than that of pure KNN ceramics. The (1-x) (K_0.5Na_0.5) NbO₃-LiNbO₃ (x=0.06) ceramics exhibits an excellent piezoelectric properties with the piezoelectric constant d₃₃, the electromechanical coupling coefficients k_p and k_t of 205pC/N, 40.3% and 49.8%, respectively.

源语言	英语
页（从-至）	323-327
页数	5
期刊	Wuji Cailiao Xuebao/Journal of Inorganic Materials
卷	22
期	2
出版状态	已出版 - 3月 2007

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title = "Sintering characteristic and piezoelectric properties of lead-free (K0.5Na0.5)NbO3-LiNbO3 ceramics",

abstract = "Lead-free (1-x)(1-x) (K0.5Na0.5) NbO3-xLiNbO3 piezoelectric ceramics were prepared by a traditional ceramic processing. The sintering characteristic, the microstructure and electrical properties of (1-x) (K0.5Na0.5) NbO3-LiNbO3 ceramics were investigated. Results show that all specimens exhibit a pure perovskite structure and the phase structure at room temperature transforms from orthorhombic to tetragonal with the increase of LiNbO3.The microstructure of (1-x) (K0.5Na0.5) NbO3-LiNbO3 ceramics exhibits apparent difference due to different amounts of LiNbO3. The sinterability of (1-x) (K0.5Na0.5) NbO3-LiNbO3 is improved and the sintering temperature is lower than that of pure KNN ceramics. The (1-x) (K0.5Na0.5) NbO3-LiNbO3 (x=0.06) ceramics exhibits an excellent piezoelectric properties with the piezoelectric constant d33, the electromechanical coupling coefficients kp and kt of 205pC/N, 40.3\% and 49.8\%, respectively.",

keywords = "(KNa) NbO-LiNbO, Lead-free piezoelectric ceramics, Perovskite structure, Piezoelectric properties",

author = "Tang, \{Fu Sheng\} and Du, \{Hong Liang\} and Liu, \{Dai Jun\} and Fa Luo and Zhou, \{Wan Cheng\}",

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T1 - Sintering characteristic and piezoelectric properties of lead-free (K0.5Na0.5)NbO3-LiNbO3 ceramics

AU - Tang, Fu Sheng

AU - Du, Hong Liang

AU - Liu, Dai Jun

AU - Luo, Fa

AU - Zhou, Wan Cheng

PY - 2007/3

Y1 - 2007/3

N2 - Lead-free (1-x)(1-x) (K0.5Na0.5) NbO3-xLiNbO3 piezoelectric ceramics were prepared by a traditional ceramic processing. The sintering characteristic, the microstructure and electrical properties of (1-x) (K0.5Na0.5) NbO3-LiNbO3 ceramics were investigated. Results show that all specimens exhibit a pure perovskite structure and the phase structure at room temperature transforms from orthorhombic to tetragonal with the increase of LiNbO3.The microstructure of (1-x) (K0.5Na0.5) NbO3-LiNbO3 ceramics exhibits apparent difference due to different amounts of LiNbO3. The sinterability of (1-x) (K0.5Na0.5) NbO3-LiNbO3 is improved and the sintering temperature is lower than that of pure KNN ceramics. The (1-x) (K0.5Na0.5) NbO3-LiNbO3 (x=0.06) ceramics exhibits an excellent piezoelectric properties with the piezoelectric constant d33, the electromechanical coupling coefficients kp and kt of 205pC/N, 40.3% and 49.8%, respectively.

AB - Lead-free (1-x)(1-x) (K0.5Na0.5) NbO3-xLiNbO3 piezoelectric ceramics were prepared by a traditional ceramic processing. The sintering characteristic, the microstructure and electrical properties of (1-x) (K0.5Na0.5) NbO3-LiNbO3 ceramics were investigated. Results show that all specimens exhibit a pure perovskite structure and the phase structure at room temperature transforms from orthorhombic to tetragonal with the increase of LiNbO3.The microstructure of (1-x) (K0.5Na0.5) NbO3-LiNbO3 ceramics exhibits apparent difference due to different amounts of LiNbO3. The sinterability of (1-x) (K0.5Na0.5) NbO3-LiNbO3 is improved and the sintering temperature is lower than that of pure KNN ceramics. The (1-x) (K0.5Na0.5) NbO3-LiNbO3 (x=0.06) ceramics exhibits an excellent piezoelectric properties with the piezoelectric constant d33, the electromechanical coupling coefficients kp and kt of 205pC/N, 40.3% and 49.8%, respectively.

KW - (KNa) NbO-LiNbO

KW - Lead-free piezoelectric ceramics

KW - Perovskite structure

KW - Piezoelectric properties

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M3 - 文章

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SN - 1000-324X

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EP - 327

JO - Wuji Cailiao Xuebao/Journal of Inorganic Materials

JF - Wuji Cailiao Xuebao/Journal of Inorganic Materials

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ER -

Sintering characteristic and piezoelectric properties of lead-free (K0.5Na0.5)NbO3-LiNbO3 ceramics

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Sintering characteristic and piezoelectric properties of lead-free (K_0.5Na_0.5)NbO₃-LiNbO₃ ceramics