Gao, Pan ; Huang, Xinye ; Liu, Chang ; Zhang, Rongjie ; Chen, Xin ; Lei, Pan ; Zhuo, Fangping ; Liu, Zenghui (2023)
Grain size engineered K0.5Na0.5NbO3 ceramic with enhanced piezoelectric properties by introducing Zn additive.
In: Journal of Materials Science: Materials in Electronics, 34
doi: 10.1007/s10854-023-11652-8
Article, Bibliographie
Abstract
Developing lead-free piezoelectric materials is crucial for replacing lead-contained materials in electronics. In this study, we address the challenges of low breakdown strength and poor sinterability in (K, Na)NbO 3 (KNN) ceramics by introducing Zn as a sintering aid. The effects of Zn concentration on the structure, breakdown strength, dielectric, and piezoelectric properties of KNN ceramics have been investigated. The Zn-modified KNN ceramics exhibited a dense microstructure with reduced grain size and high breakdown strength. Remarkably, the grain size engineered KNN-xZn (x = 0.02) ceramic demonstrated a significantly enhanced d33 value of 97 pC/N, which was 47% higher than that of the pure KNN ceramic. Simulation results revealed that the accumulation and discharge of electric charges on the surface of undissolved ZnO, due to its high electrical conductivity, led to a degradation in the piezoelectric property. These findings provide insights into the design of lead-free piezoceramics and offer a feasible approach for developing novel KNN-based materials for electromechanical transduction applications.
| Item Type: | Article |
|---|---|
| Erschienen: | 2023 |
| Creators: | Gao, Pan ; Huang, Xinye ; Liu, Chang ; Zhang, Rongjie ; Chen, Xin ; Lei, Pan ; Zhuo, Fangping ; Liu, Zenghui |
| Type of entry: | Bibliographie |
| Title: | Grain size engineered K0.5Na0.5NbO3 ceramic with enhanced piezoelectric properties by introducing Zn additive |
| Language: | English |
| Date: | 24 November 2023 |
| Publisher: | Springer |
| Journal or Publication Title: | Journal of Materials Science: Materials in Electronics |
| Volume of the journal: | 34 |
| Collation: | 14 Seiten |
| DOI: | 10.1007/s10854-023-11652-8 |
| Abstract: | Developing lead-free piezoelectric materials is crucial for replacing lead-contained materials in electronics. In this study, we address the challenges of low breakdown strength and poor sinterability in (K, Na)NbO 3 (KNN) ceramics by introducing Zn as a sintering aid. The effects of Zn concentration on the structure, breakdown strength, dielectric, and piezoelectric properties of KNN ceramics have been investigated. The Zn-modified KNN ceramics exhibited a dense microstructure with reduced grain size and high breakdown strength. Remarkably, the grain size engineered KNN-xZn (x = 0.02) ceramic demonstrated a significantly enhanced d33 value of 97 pC/N, which was 47% higher than that of the pure KNN ceramic. Simulation results revealed that the accumulation and discharge of electric charges on the surface of undissolved ZnO, due to its high electrical conductivity, led to a degradation in the piezoelectric property. These findings provide insights into the design of lead-free piezoceramics and offer a feasible approach for developing novel KNN-based materials for electromechanical transduction applications. |
| Additional Information: | Artikel-ID: 2210 |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials |
| Date Deposited: | 27 Nov 2023 08:00 |
| Last Modified: | 27 Nov 2023 10:13 |
| PPN: | 513487387 |
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