New insight on two-step sintering process of lead-free (K, Na)NbO3-based piezoelectric ceramics

Pan, Yongqi; Feng, Jie; Huang, Longfei; Xu, Zunping; Chen, Yi

doi:10.1016/j.mtcomm.2023.105340

Cited by 4 publications

(1 citation statement)

References 31 publications

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“…According to the research results of Gio et al [3], the optimum piezoelectric and ferroelectric properties of the KNLNS-BNKZ ceramics (d 33 = 251 pC N −1 , k p = 0.51, k t = 0.55, P r = 16.77 μC cm −2 ) were obtained at T 2 = 1060 °C and t 2 = 5 h, proving the efficacy of two-step sintering technique. Pan et al [13] suggested that the two-step sintering process could be used to synthesize (K,Na)NbO 3 -based ceramics to lower the volatilization of alkali metals. In the present study, we focused on studying the effect of calcination and twostep sintering temperatures on the physical properties of (K 0.48 Na 0.48 Li 0.04 )(Nb 0.95 Sb 0.05 )O 3 lead-free ceramics.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the calcination and two-step sintering temperatures of (K_0.48Na_0.48Li_0.04)(Nb_0.95Sb_0.05)O₃ ceramics

Vuong,

Lich,

Cuong

et al. 2023

Mater. Res. Express

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Lead-free (K0.48Na0.48Li0.04)(Nb0.95Sb0.05)O3 (KNLNS) ceramics have been successfully optimized for the calcination and two-step sintering temperatures. The experimental results reveal that the KNLNS powder calcined at 850 or 900 °C presented a pure perovskite phase with an orthorhombic phase. The particle size was in the range of 0.1–0.4 m. The two-step sintering temperature (range: 950 to 1100 °C) significantly affects the structure, microstructure, and electrical properties of KNLNS ceramics. The presence of a pure perovskite phase with good crystallization is observed in all samples. The microstructure was researched by varying the two-step sintering temperature to obtain a dense microstructure and a clear grain boundary in order to optimize their piezoelectric properties. The best electrical properties of KNLNS ceramics were recorded at the optimized temperature of 1050 °C (density (): 4,35 g/cm3; electromechanical coupling factor (kp): 0.33, kt: 0.35; dielectric constant (εr): 849; dielectric loss (tanδ): 0.073; maximum dielectric constant (max at TC): 6659; piezoelectric constant (d33): 195 pC/N; remanent polarization (Pr): 16.1 µC/cm2; energy storage density (Wrec): 0.36 J/cm3; energy storage efficiency (): 48.1%; t2 = 4 h), proving the efficacy of the two-step sintering technique

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Section: Introductionmentioning

confidence: 99%

Optimization of the calcination and two-step sintering temperatures of (K_0.48Na_0.48Li_0.04)(Nb_0.95Sb_0.05)O₃ ceramics

Vuong,

Lich,

Cuong

et al. 2023

Mater. Res. Express

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Enhanced electrical properties of (1−x)(K0.48Na0.48Li0.04)(Nb0.95Sb0.05)O3−xBi0.5(Na0.4K0.1)TiO3 ceramics through structural phase modification

Vuong,

Lich,

Nha

et al. 2023

J Mater Sci: Mater Electron

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Grain size engineered K0.5Na0.5NbO3 ceramic with enhanced piezoelectric properties by introducing Zn additive

Gao,

Huang,

Liu

et al. 2023

J Mater Sci: Mater Electron

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New insight on two-step sintering process of lead-free (K, Na)NbO3-based piezoelectric ceramics

Cited by 4 publications

References 31 publications

Optimization of the calcination and two-step sintering temperatures of (K_0.48Na_0.48Li_0.04)(Nb_0.95Sb_0.05)O₃ ceramics

Optimization of the calcination and two-step sintering temperatures of (K_0.48Na_0.48Li_0.04)(Nb_0.95Sb_0.05)O₃ ceramics

Enhanced electrical properties of (1−x)(K0.48Na0.48Li0.04)(Nb0.95Sb0.05)O3−xBi0.5(Na0.4K0.1)TiO3 ceramics through structural phase modification

Grain size engineered K0.5Na0.5NbO3 ceramic with enhanced piezoelectric properties by introducing Zn additive

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New insight on two-step sintering process of lead-free (K, Na)NbO3-based piezoelectric ceramics

Cited by 4 publications

References 31 publications

Optimization of the calcination and two-step sintering temperatures of (K0.48Na0.48Li0.04)(Nb0.95Sb0.05)O3 ceramics

Optimization of the calcination and two-step sintering temperatures of (K0.48Na0.48Li0.04)(Nb0.95Sb0.05)O3 ceramics

Enhanced electrical properties of (1−x)(K0.48Na0.48Li0.04)(Nb0.95Sb0.05)O3−xBi0.5(Na0.4K0.1)TiO3 ceramics through structural phase modification

Grain size engineered K0.5Na0.5NbO3 ceramic with enhanced piezoelectric properties by introducing Zn additive

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Product

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Optimization of the calcination and two-step sintering temperatures of (K_0.48Na_0.48Li_0.04)(Nb_0.95Sb_0.05)O₃ ceramics

Optimization of the calcination and two-step sintering temperatures of (K_0.48Na_0.48Li_0.04)(Nb_0.95Sb_0.05)O₃ ceramics