CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Xiujuan Lin,Yaoting Zhao,Chao Wang,Wenlong Li,Rui Guo,Xiaofang Zhang,Feng Yu,Gensheng Dong,Chungang Li,Shifeng Huang
1-3 piezoelectric composites, as materials with integrated structural/functional characteristics, are typically used to manufacture ultrasonic transducers. As a core sensitive element, the structural dimensions as well as the molding quality of the 1–3 piezoelectric array, will directly affect the transducer's operating performance. In this paper, an improved soft mold process is proposed to prepare lead zirconate titanate (PZT) microscale 1–3 piezoelectric arrays by a soft mold combined with UV curing process. Firstly, the rheological behavior of PZT ceramic suspension and the preparation process of polydimethylsiloxane (PDMS) soft mold were studied. The surface contact angle of the Si master mold modified by trimethylchlorosilane (TMCS) was significantly increased, facilitating the peeling of the PDMS soft mold from the Si master mold surface, thus improving the surface quality of the PDMS soft mold. Then, the sintering process, microstructure, and electrical properties of microscale 1–3 piezoelectric arrays were systematically investigated. The perpendicularity and integrity of the piezoelectric arrays were improved by an optimized sintering process, and the arrays had micropillar diameters as small as 8 μm and aspect ratios over 7.5. The electrical properties of the piezoelectric composites with thicknesses of 55 μm and 42 μm were analyzed to obtain their resonant frequencies f s of 33.8 MHz and 41.3 MHz, respectively. The developed novel soft mold process can realize the preparation of microscale 1–3 piezoelectric arrays with fine structure and large aspect ratios, which are expected to fabricate high-frequency ultrasonic transducers.
研究领域:
材料科学
·
超声技术
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Shuai He,Guicheng Jiang,Qian Wang,Lang Bian,Bin Yang
Lead zirconate titanate (PZT) based piezoelectric ceramics are applied in ultrasonic transducers and multilayer actuators fields universally. Excellent piezoelectric properties of PZT-based ceramics of low sintering temperature are crucial for the applications of high-power motors and multilayer piezo-actuators due to the reduction of cost and energy consumption. In this paper, a ternary solid-solution ceramic system 0.05Pb(Mn 1/3 Sb 2/3 )O 3 -0.47PbZrO 3 -0.48PbTiO 3 (PMS-PZT) was studied. A new complex additive composed of SiO 2 -Li 2 O 3 -CuO was doped into the PMS-PZT ceramics. The doping of CuO and Li 2 O 3 was discovered to be able to lower the sintering temperature and remain electric properties efficiently, while the doping of SiO 2 can decrease the grain size and increase the density. All ceramic samples were fabricated by solid-phase reaction method and sintered in the low temperature range from 800 °C to 1000 °C. The phase structure, morphology of natural surface and electrical properties of ceramics doped by 0.5 wt% additive were characterized. The 0.5 wt% additive doped PMS-PZT ceramics exhibit remarkable comprehensive piezoelectric properties sintered at 900 °C ( d 33 = 343 pC/N, Q m = 1016, T c = 328 °C, tan δ = 0.4 % (at 25 °C), ε r = 1344, d 33 * = 490 pm/V). The sintering temperature 900 °C is significantly below the melting point of Ag (961.9 °C) and Cu (1083.4 °C), so the more cost-effective Cu internal electrodes and Ag rich Ag/Pd electrodes can be used to substitute the expensive Pd rich Ag/Pd internal electrodes in the production of devices composed of multilayer ceramic. The research of this work provides an important candidate additive for the applications of high-performance transducers and multilayer actuators with low cost.
研究领域:
材料科学
·
物理学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Kai Liu,Yuhang Xia,Qingqing Zhang,Yanying Du,Yusheng Shi,Sanjay Joshi,Chunze Yan,Yanjiao Wu,Shangyu Huang,Huajun Sun
Herein, the effect of the binder content in lead zirconate titanate (PZT) slurry has been systematically studied to improve the piezoelectric properties of PZT ceramics prepared via material extrusion 3D printing . For smooth printing, a slurry with a binder concentration ranging from 6 to 12 wt% was proposed. The porosity of the green body first decreased and then increased with an increase in the binder concentration, and the minimum porosity was obtained when the binder concentration reached 10 wt%. Samples with increased density were obtained after debinding and lead-rich atmosphere sintering. PZT piezoceramics fabricated using a binder content of 10 wt% exhibit the maximum relative density (96.9%), largest piezoelectric constant (342.6 pC/N) and dielectric constant (1621). Based on the above process, the wood pile structure and helical twentytetrahedral structural components were successfully fabricated using the material extrusion process. This research lays the foundation for the engineering application of 3D printing to fabricate high-performance piezoceramics with complex shapes.
研究领域:
材料科学
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电子工程
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产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 42
·36118-36124
·
IF 3.289
Y. Feng,W. L. Li,D. Xu,W. P. Cao,Y. Yu,W. D. Fei
Recently, we proposed a new approach (Li+–Al3+ ionic pairs doping) to enhance the piezoelectric properties of BaTiO3 ceramic. Here we sequentially prove that Li+ and Al3+ can also enhance the piezoelectric properties of PbZr0.52Ti0.48O3 (PZT) ceramic. The X-ray diffraction results demonstrate the optimized distribution of Li+–Al3+ ionic pairs parallel to the [001] direction in the doped ceramics, as same as the results in BaTiO3-based ceramic. The doped ceramics exhibit constricted hysteresis loops, which is associated with the restoring force of Li+–Al3+ ionic pairs as a result of the Coulomb force between Li+ and Al3+ ions. The results show that the piezoelectric properties and corresponding temperature stability of the doped ceramics were enhanced significantly. The analysis and conclusion indicate that the piezoelectric mechanism coming from ionic pairs applies equally well to the PZT ceramic. Co-doping Li+ and Al3+ into the A-site is a preferable approach for the piezoelectric property enhancement of ABO3 ferroelectric ceramics.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Lang Bian,Qian Wang,Shuai He,Jie Wu,Kai Li,Yingchun Liu,Bin Yang
A new ceramic system, Pb(Ni 1/3 Ta 2/3 )O 3 -PbZrO 3 -PbTiO 3 (PNT-PZT), was found to be able to be textured at low temperatures (≤ 1000 °C) without the addition of sintering aids. Textured 0.24PNT-0.34PZ-0.42PT ceramics with different template contents were successfully prepared at 1000 °C using BaTiO 3 platelets as templates. The phase structure, microstructure, electrical properties and strain-temperature stability of the ceramics were studied in detail. The 0.24PNT-0.34PZ-0.42PT-5 vol% BT ceramic has the best comprehensive properties ( d 33 = 820 pC/N, ε r = 2499, E C = 6.25 kV/cm， T C = 180 °C) and excellent temperature stability (strain variation ≤ 5% between 20 °C and 140 °C). Finally, multilayer textured piezoelectric ceramics were prepared and their displacement output characteristics were studied. The multilayer piezoelectric ceramics successfully exhibit excellent strain under small voltage driving. Our work provides a new candidate material for the development of a new generation of multilayer piezoelectric ceramics.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Q. Wang,L. Bian,K. Li,Y.C. Liu,Y.L. Yang,B. Yang,W.W. Cao
<001> textured Pb(Ni 1/3 Nb 2/3 )O 3 -PbZrO 3 -PbTiO 3 (PNN-PZT) ceramics were prepared by templated grain growth (TGG) technique using 0.36PNN- x PZ-(0.64- x )PT ( x = 0.23, 0.25 and 0.27) powder matrix. Optimum template content was derived to achieve the best electromechanical properties of textured ceramics. The piezoelectric coefficient d 33 = 1165 pC/N, Curie temperature T C = 197 °C, longitudinal mode electromechanical coupling factor k 33 = 0.86 and a very large effective piezoelectric strain coefficient d 33 * = 2041 pm/V were simultaneously achieved at the morphotropic phase boundary (MPB) composition ( x = 0.25) with 3 vol.% BaTiO 3 (BT) templates. Domain structures of textured ceramics were analyzed in detail to reveal the origin of these high piezoelectric and electromechanical properties.
研究领域:
材料科学
·
电子工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Zhe Zhu,Zhonghua Yao,Xinhui Li,Rui Zhao,Ruiling Chang,Hua Hao,Minghe Cao,Hanxing Liu
The quenching process is investigated to modulate domain structures behaviors in three ceramic compositions: lead zirconate titanate with a 75/25 zirconium titanium ratio (75/25PZT), Mn-doped (Mn-75/25PZT) and Nb-doped (Nb-75/25PZT). Piezoresponse force microscopy (PFM) demonstrates a transformation of domain structures from micron to nanoscale, accompanied by increased domain walls (DWs) density. In-situ Raman spectroscopy detects a softening of the E (TO1) vibration mode after quenching, indicating lower DWs energy density and higher internal stress. Furthermore, both 75/25PZT and Mn-75/25PZT demonstrate the release of pinched hysteresis loops, coupled with substantial enhancements in piezoelectric coefficients of 36 % and 37 %, respectively. Additionally, both reversible and irreversible dielectric responses are augmented through quenching. This investigation provides detailed insights into the evolution of domains during the quenching process in these ceramic systems.
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·Vol. 50
·期 4
·6598-6605
·
IF 5.2
Wei Peng,Jianglei Chang,Bin Wang,Zhen Liu,Genshui Wang,Shuxiang Dong
The ultrahigh piezoelectric coefficient (d 33 ≥ 1000 pC/N) exhibited by piezoelectric Pb(Zr,Ti)O 3 (PZT) ceramics not only captivates researchers but also holds considerable practical value across various applications. While significant progress has been made in enhancing piezoelectricity of PZT-based ceramics, novel mechanisms need to be proposed to explain the piezoelectric behavior of new systems with ultrahigh d 33 . In this study, we initially employ LiNbO 3 as an additive to enhance the piezoelectric properties of the Pb(Ni 1 / 3 Nb 2 / 3 )O 3 –PbZrO 3 –PbTiO 3 ceramics. and the optimal performance is achieved by incorporating 1.5 mol% of LiNbO 3 into the system, resulting in an ultrahigh d 33 ∼1178 pC/N ( d 33 * ∼1560 p.m./V (@ E = 5 kV/cm)). The corresponding mechanism for this superior piezoelectric response involves the AB-site co-doping effect, especially the ( Li Pb ′ − Nb Zr / Ti ∙ ) defect dipoles formed by the introduction of LiNbO 3 . In particular, the addition of LiNbO 3 leads to a more uniform distribution of domain sizes, thereby further enhancing the ultrahigh piezoelectricity. These findings pave the way for a deeper under-standing of the origin of ultrahigh piezoelectric properties and make substantial contributions to the advancement of piezoelectric materials for practical applications in electromechanical devices.
研究领域:
材料科学
·
功能陶瓷
·
压电材料
·
固态物理
·
电子显微学
·
介电材料
·
无机非金属材料
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2012
·Vol. 39
·期 4
·3915-3919
·
IF 1.751
Junxia Wang,Hengchang Nie,Chunfeng Lan,Genshui Wang,Xianlin Dong,Xuefeng Chen,Fei Cao,Hongliang He
Porous Pb (Zr 0.95 Ti 0.05 ) O 3 / x MgO (PZT/MgO, x =0, 0.1, 0.2, 0.5 and 1.0 wt%) ferroelectric ceramics were prepared with MgO nanoparticles as reinforcing phase. The effects of MgO nanoparticles on the phase, microstructure, electrical and mechanical properties of as-prepared ceramics were investigated. The results show that the grain size is reduced obviously when increasing the amount of MgO. Compared with pure porous PZT, T C of MgO-added PZT ceramics shifts to higher temperature. Moreover, dielectric, ferroelectric and piezoelectric properties show no much degradation. Further, PZT/MgO ceramics possess enhanced mechanical properties compared to pure porous PZT ceramics, the largest increment of the fracture toughness and hardness being 31.3% and 19.8%, respectively. The optimal electrical and mechanical properties are obtained with the addition of less than 0.5 wt% MgO nanoparticles.
研究领域:
材料科学
·
无机非金属材料
·
功能陶瓷
·
电子材料
·
固态物理
·
纳米复合材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）