JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 23
·13023-13030
·
IF 4.22
Bian Kan,Li Xiuxiu,Wang Yiping,Li Xiongjie,Sun Sheng,Feng Shuo,Yang Ying
Pb(Zr, Ti)O 3 (PZT)-based piezoelectric ceramics and Al 2 O 3 -based structural ceramics were cast and co-fired to prepare a layered piezoelectric ceramic/structural ceramic composite. Considering the significant differences in sintering characteristics of PZT- and Al 2 O 3- based ceramics, control of the sintering temperature and the dependence of the linear shrinkage on the solid content of the tape-casting films were systematically conducted at first. The sintering density and the interface bonding properties of the prepared composites were then investigated. The results of electrical and mechanical properties of the composite ceramics indicate: By using sintering aids, Al 2 O 3 ceramic could be fully densified and co-fired with PZT ceramic at 1150 °C. Shrinkage matching during sintering was achieved by adjusting the solid contents to 45 vol.% and 65 vol.% for PZT and alumina tape-casting films. In the layered composites, Al 2 O 3 structural ceramic presents an excellent mechanical property with HV hardness of 667, while the PZT functional ceramic presents d 33 , ε r and tanδ of 259 pC/N, 965 and 0.37%, respectively.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Feng Luo,Zhimin Li,Jiyuan Chen,Yuanshui Liu,Linzhuang Xing,Yangxi Yan,Yue Hao
Ecologically sustainable hard type piezoelectric ceramics are highly demanded for high power transducer applications in replacing lead-based piezoelectric ceramics. In this study, MnO was proposed as acceptor dopant to modify the electric properties of 0.75BiFeO 3 -0.25BaTiO 3 piezoelectric ceramics. Results showed that MnO doping reduced the lattice distortion of rhombohedral phase and facilitated the formation of pseudo cubic phase of 0.75BiFeO 3 -0.25BaTiO 3 system. Moreover, it caused the diversity of domain morphology and reduced the domain size as well. XPS analysis indicated that Mn 2+ ions suppressed the transition from Fe 3+ ions to Fe 2+ ions and gave rise to the increase of oxygen vacancies . Accordingly, the introduction of MnO synergistically increases the d 33 , K p , and Q m and lowers the tan δ of 0.75BiFeO 3 -0.25BaTiO 3 ceramics. The abnormal enhancement in hard type properties is ascribed mainly to the increase of extrinsic contribution rather than the pinning effect arising from oxygen vacancies. Finally, based on an optimal 0.75Bi(Fe 0.985 Mn 0.015 )O 3 -0.25BaTiO 3 system, an atomizer prototype was fabricated. The remarkable atomization effect suggests a competitive potential of 0.75BF-0.25BT ceramic for transducer application.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2024
·
IF 3.9
Xianzhao Zhang,Qiyi Yin,Hengwen Cheng,Ruihua Zheng,Hui Zhang,Kunhong Hu,Fei Lin,Liping Fang,Shicheng Wang,Zhen Zhang
In this study, new lead-free piezoelectric ceramics (1 − x )(K 0.5 Na 0.5 )NbO 3 (KNN)– x (Bi 0.45 Y 0.05 )Na 0.5 ZrO 3 (BYNZ) were prepared using the conventional solid-state method, and the relation between the doping amount of (Bi 0.45 Y 0.05 )Na 0.5 ZrO 3 and its structural and electrical properties was investigated. Material characterization and structural analyses conducted using X-ray diffraction, scanning electron microscopy, and energy-dispersive spectroscopy revealed that KNN–BYNZ ceramics formed single perovskite structures at 0 ≤ x ≤ 0.05 and a polycrystalline phase boundary (PPB) for the coexisting orthorhombic and tetragonal phases at 0.03 ≤ x ≤ 0.05. The ceramics exhibited desirable electrical properties at x = 0.04 ( d 33 = 305 pC/N, k p = 45.8 %, ε r = 1316, tanδ = 2.4 %, T c = 332 °C, P r = 28.2 μC/cm 2 , and E c = 1.07 kV/mm). These findings reveal that the introduction of BYNZ enables the effective formation of a PPB in the KNN-based ceramics to improve their electrical properties, and they exhibit potential for replacing lead-based piezoelectric ceramics in the market.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2020
·
IF 4.495
Jian Guo,Binbin Tong,Jie Jian,Jianguo Chen,Taosheng Zhou,Xunzhong Shang,Jinrong Cheng
Large transduction coefficient ( d 33 × g 33 ) is difficult to obtain in piezoelectric ceramics because these two parameters show opposite trends with compositional modifications. Herein, the Pb(Zr 0.53 Ti 0.47 )O 3 ceramic powders were calcinated under different temperatures (A:830 °C, B:860 °C, and C:890 °C), and then mixed together according to different weight ratios (1A:1B:1C, 1A:2B:1C, 1A:2B:3C and 3A:2B:1C) for ceramics preparation. Both d 33 and g 33 are improved successfully, and the transduction coefficient with the weight ratio of 1A:2B:3C reaches up to 17,500 × 10 −15 m 2 /N, which is 60 % higher than that with the powders calcinated under 830 °C, and at least twice those of commercial PZT-4, PZT-5A and PZT-8 ceramics. The improved transduction coefficient is owing to the enhanced piezoelectric constant and spontaneous polarization resulted from the increased grain size, relative density and the fraction of tetragonal phase. These results indicate that this is a simple but effective way to tailor the transduction coefficient in piezoelectric ceramics .
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
ACS Applied Electronic Materials
·
2022
·
IF 4.494
Xinyu He,Tao Wang,Xudong Li,Sujit Das,Xingjun Liu,Zuhuang Chen
Piezoelectric ceramics with combined high piezoelectric performance and excellent thermal stability are important and urgently needed for actuation and sensor applications in harsh environments, such as aerospace, automotive, oil, and gas exploration industries. However, the development of such piezoceramics is still a highly challenging task because an enhanced piezoelectric response is generally accompanied by a decrease in thermal stability. Here, we report that 0.55Bi1–xSmxFeO3–0.45PbTiO3 piezoceramics exhibit a balanced trade-off between piezoelectric response and thermal stability near the morphotropic phase boundary (MPB), where piezoelectric coefficient d33 (275 pC N–1) barely changes even at a temperature as high as 320 °C and the well-squared shape P–E hysteresis loop persists even at a high temperature of 220 °C. Compared with La3+, Sm3+ has a smaller ionic radius than Bi3+ or Pb2+ and thus could be more effectively to induce MPB at a relatively low substitution level (x = 0.16–0.21). In turn, the thermal stability of the piezoceramics does not degrade significantly. Our results further demonstrate that Sm substitution induces a strong relaxor behavior in the ceramics. These results suggest that the Sm3+-doped BiFeO3-PbTiO3 ceramics hold great promise for high temperature piezoelectric applications.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 4
·2384-2392
·
IF 4.186
Yi Zhang,Rongxia Huang,Fan Zhang,Zhihao Liang,Tianbao Xie,Hua-Tay Lin,Yejing Dai
ZrO 2 powders of various particle sizes (0.15, 0.7, 500 µm) were used to simulate loose powder bed sintering to prepare BF–BT piezoelectric ceramics. The phase structure, dielectric properties, ferroelectric properties, and piezoelectric properties were compared with the samples sintered by the conventional powder bed method (i.e., powder of the same composition as the sample). Results showed that the use of loose ZrO 2 powder bed could improve the heat conduction rate and the sintering quality of bulk BF–BT piezoelectric ceramics. The XPS results showed that the samples sintered with 500 µm ZrO 2 powder beds had the lowest concentration of Fe 2+ , exhibited the largest piezoelectric coefficients ( d 33 = 201 pC/N). In contrast, the sample sintered with a conventional powder bed under the same sintering conditions had a piezoelectric coefficient d 33 of 156 pC/N.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
ACTA MATERIALIA
·
2014
·
IF 3.94
D. Xu,W.L. Li,L.D. Wang,W. Wang,W.P. Cao,W.D. Fei
The high piezoelectric properties of piezoelectric ceramics are typically obtained by inducing a phase transition between two ferroelectric phases, using either the morphotropic phase boundary (MPB) or the polymorphic phase transition (PPT). Here we demonstrate that neither the MPB nor the PPT is necessary to achieve high piezoelectric properties. Our results show that the optimized distribution of Li + –Al 3+ pairs parallel to the [0 0 1] direction, as found in our x LiAlSiO 4 /BaTiO 3 ( x LAS/BT) lead-free piezoelectric ceramic system prepared from ordinary raw materials by conventional solid-state reaction sintering , can generate a large piezoelectric constant ( d 33 ) of 378 pC/N when x = 7.5 mol.%. The d 33 value of the 7.5 mol.% LAS/BT ceramic is more than three times that of the pure BT ceramic. The distortion connected to the proposed Li + –Al 3+ pairs locally creates unit cells of less than tetragonal symmetry, and these low-symmetry cells can be responsible for the high piezoelectric response. The high-temperature stability testing reveals that these doped ceramics are usable at temperatures as high as 120 °C. This piezoelectric mechanism coming from the doping ionic pairs provides a new method to achieve large piezoelectric properties in a wide range of ABO 3 -type perovskite systems.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Chen Yang,Xijun Xu,Wajid Ali,Yaojin Wang,Yiping Wang,Ying Yang,Lang Chen,Guoliang Yuan
Ultrasonic sensors are widely applied in industries near room temperature; however, their application at high temperature is still a challenge mainly due to the lack of high-performance piezoelectric ceramics. Here, the 0.364BiScO3–0.636PbTiO3–0.005CaTiO3 ceramic exhibits excellent piezoelectric performances at 20–440 °C. Its piezoelectric coefficient d33 increases from 475 pC/N at 20 °C to 853 pC/N at 360 °C, and then it gradually decreases to 669 pC/N at 440 °C. Furthermore, the planar electromechanical coupling factor kp gradually increases from 0.59 at 20 °C to 0.67 at 200 °C, and then it remains at a stable value of 0.65–0.67 at 150–350 °C. These achievements are because the ceramic morphotropic phase boundaries have a flat Gibbs free energy versus polarization curve and a wide temperature range. Since the piezoelectric ceramic shows satisfactory piezoelectric properties at 20–440 °C, the corresponding ultrasonic sensors can in situ monitor many high-temperature devices, such as engines, wheels, drills, boilers, etc.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Zhaoru Xue,Denghui Jiang,Yihang Li,Hongyu Yang,Linzhuang Xing,Zhimin Li
Lead-based piezoelectric ceramics hold a prominent share in commercial piezoelectric actuators, but their low strain has not been well resolved. Herein, a ternary piezoelectric ceramic x (Bi 0.25 Na 0.25 Ce 0.5 )(Zn 0.5 Ti 0.5 )O 3 -PbZrO 3 -PbTiO 3 ( x BNCZT-PZ-PT) was designed through the co-doping method at A and B sites, with the aim of enhancing the intrinsic response to strain characteristic. Results indicate that the incorporation of aliovalent cations facilitate the formation of the tetragonal phase by promoting lattice distortion which leads to the enhancement of tetragonality, thereby strengthening the piezoelectric response. Meanwhile, the defect dipoles are successfully created which establishes an internal bias field along the [001] direction, enhancing the stretching of the lattice under the electric field and contributing to the strain. When x = 0.04, the intrinsic response reaches a maximum, and a unipolar strain of 0.44 % is achieved at 60 kV/cm. The findings demonstrate the effectiveness to increase the strain in PZ-PT-based piezoelectric ceramics from the perspective of strain sources.
研究领域:
材料科学
·
陶瓷学
·
固态物理学
·
电陶瓷
·
功能材料
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yushan Deng,Xi Ouyang,Manwen Yao,Xi Yao
Heterovalent ion doping has influenced the further development of piezoelectric applications. Pr 3+ doping in relaxor ferroelectrics is rarely focused on piezoelectric performance enhancement. 0.51 Pb(Ni 1/3 Nb 2/3 )O 3 -0.49 Pb(Hf 0.3 Ti 0.7 )O 3 (PNN-49PHT) ceramics with Pr 3+ doping ceramics were designed and fabricated by a two-step precursor method. Excellent dielectric diffusion coefficient ( γ ) of 1.96 was achieved at the low Pr 3+ doping concentration of 0.2 %. Increased relaxation enhanced the nanoscale domains formation, resulting in a giant strain response ( d* 33 ) of 1400 pm/V at 10 kV/cm, and a total strain ( S tol ) of 0.27 % at 20 kV/cm. Structural refinement unveiled that the high piezoelectricity originated from the mainly substitution of Pr 3+ for Pb 2+ at the A-site, inducing lattice distortion and phase transitions. Local domain switching and long-range ordered destruction were investigated by piezoresponse force microscopy (PFM) and Scanning Electron Microscopy (SEM). These findings contribute to the advancement of piezoelectric devices and provide valuable insights for the design and optimization of high-performance piezoelectric ceramics .
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
AIP Advances
·
2023
·Vol. 13
·期 6
·
IF 1.6
Liu Chang,Mao Runyu,Wu Qiyun,Li Jianlin,Zheng Deyi,Fei Zihao,Pang Chi
In this work, we regulated the oxygen vacancy concentration by sintering BCZT + 0.1 mol % Y + 0.1 mol % Nb [BCZT-0.1 mol % (Y + Nb)] ceramics under air, oxygen, argon, and vacuum atmospheres and examined the effect of oxygen vacancy concentration on phase composition, crystal structure, microstructure, and electrical properties. X-ray photoelectron spectrometry and X-ray diffraction Rietveld refinement showed that the air- and oxygen-sintered ceramic samples had lower oxygen vacancy concentrations, and the oxygen octahedral lattice distortion in the samples was stable when the R-O-T phases coexisted, forming a multiphase coexistence structure with more spontaneous polarization directions. The oxygen-sintering atmosphere is important in oxygen compensation, which promotes the formation of dense microstructure, thereby increasing the Curie temperature ( T C ). Oxygen vacancy formation energy was low in the argon and vacuum atmospheres, and some oxygen vacancies increased the mass transfer effect and grain growth. Nevertheless, excess oxygen vacancies increased the leakage current during polarization resulting in poor polarity, which prevents directional deflection of domains and degrades performance. The vacuum-sintered sample was calcined in 1000 °C air for oxygen supplementation sintering, and as the sintering time increased, the oxygen vacancy concentration decreased, the grains grew further, the density increased, and the piezoelectric properties improved. The oxygen-sintered BCZT-0.1 mol % (Y + Nb) samples had good comprehensive electrical properties ( d 33 = 547 pC/N, k p = 55%, ε r = 5355, P r = 10.63 µ C/cm 2 , E C = 1.89 kV/cm, tan δ = 0.02, and T C = 102 °C).
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Weiwei Yang,Peng Li,Feng Li,Xing Liu,Bo Shen,Jiwei Zhai
In this study, 0.5 wt% MnO 2 doped (0.99- x )(K 0.5 Na 0.5 )(Nb 0.965 Sb 0.035 )O 3 –0.01CaZrO 3 - x (Bi 0.5 K 0.5 )(Hf 0.98 Ti 0.02 )O 3 [abbreviated as (0.99- x )KNNS-0.01CZ- x BKHT, x = 0.01, 0.02, 0.03, 0.04, 0.05, 0.06] lead-free piezoelectric ceramics were fabricated by traditional solid-state reaction method. The microstructure, phase transformation, electromechanical properties and the thermal stability of the ceramics were systematically studied. Resulting from the R-T phase coexisting, a large piezoelectric coefficient ( d 33 ~ 425 pC/N), planar electromechanical coupling factor ( k p ~ 49%) were achieved in the ceramics with x = 0.04. Furthermore, the specimens with x = 0.04 also exhibit excellent temperature stability for d 33 which was manifested by the less than 10% variation of d 33 values when the annealing temperature increase from 25 °C to 100 °C. The good comprehensive properties indicate that MnO 2 doped (0.99- x )KNNS-0.01CZ- x BKHT ceramics are promising candidates for practical application to eliminate the Pb-based piezoelectric ceramics from the market.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）