Article
Engineering, Electrical & Electronic
Jianjia Zhang, Yue Wen, Mengmeng Hao, Fangfang Zeng, Huitao Guo, Guifen Fan, Wenzhong Lv
Summary: The KNLN-0.06BZ lead-free ceramics prepared by TSS exhibited higher density and better electrical properties compared to those prepared by CS, possibly due to fewer oxygen vacancies facilitating domain switching. Multiple phases may coexist in all ceramic samples, with lower energy barrier at the phase boundary allowing for effective domain switching and resulting in high piezoelectric properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Review
Chemistry, Multidisciplinary
Moaz Waqar, Haijun Wu, Jingsheng Chen, Kui Yao, John Wang
Summary: Piezoelectric materials have been studied for over a century, with recent research focusing on environmentally-friendly lead-free alternatives. Key challenges in the transition involve decoding fundamental mechanisms, achieving large temperature-stable piezoresponse, and developing fabrication-friendly and tailorable compositions for future advancements.
ADVANCED MATERIALS
(2022)
Review
Materials Science, Ceramics
Zechao Li, Jiacheng Yu, Shenglan Hao, Pierre-Eymeric Janolin
Summary: The substitution of aliovalent elements at either the A- or B-site of ferroelectric perovskites has a significant impact on their properties. Donor doping leads to softening of ferroelectrics, while acceptor doping results in hardening. This review focuses on doped-BaTiO3, a lead-free ferroelectric model, and examines the effects of aliovalent doping on its dielectric, ferroelectric, and piezoelectric properties, using Cu (acceptor) doping as an example.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Engineering, Electrical & Electronic
R. Rianyoi, R. Potong, A. Ngamjarurojana, A. Chaipanich
Summary: Lead-free piezoelectric ceramic BNT-BT/PC composites were fabricated and investigated for sensor applications in structural health monitoring. The optimal ceramic content for acoustic impedance matching and piezoelectric performance was found to be approximately 40-60 vol.%. The composites showed good compatibility with concrete structures and potential for use as sensors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Xueliang Duan, Juanjuan Wang, Yuyang He, Pengkang Ma
Summary: In this study, high-dielectric (1 - x)(Bi0.5Na0.5)TiO3-x(Ba0.85Ca0.15)(Zr0.1Ti0.9)O-3 (BNT-BCZT) ceramics were fabricated by combining solid-state sintering technique and two-part synthesis. XRD measurements confirmed the formation of a stable solid solution between BNT and BCZT. The BNT-BCZT ceramics exhibited larger piezoelectric constant, lower remnant polarization, and lower coercive field compared to pure BNT ceramics.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Ceramics
N. Mamana, N. Pellegri, M. G. Stachiotti
Summary: A chemical solution deposition route based on the chelate approach was developed for synthesizing Ba0.85Ca0.15Zr0.1Ti0.9O3 thin films, as a lead-free alternative to Pb(ZrxTi1-x)O-3. This method provides a simple and rapid preparation process, producing homogeneous and crack-free thin films. The annealed films exhibited a single-phase perovskite structure and showed weak frequency dependence in dielectric constants, low dielectric loss, and ferroelectric behavior.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Pengrong Ren, Yike Wang, Xufei Fang, Kathrin Hofmann, Lalitha Kodumudi Venkataraman
Summary: By quenching, the (1-x)Na1/2Bi1/2TiO3-xBiFeO(3) solid solution was able to achieve high T-d surpassing that of traditional Na1/2Bi1/2TiO3 materials, while maintaining a high piezoelectric coefficient. The increase in T-d was attributed to the lattice distortion and domain size enlargement induced by quenching. Furthermore, the quenched specimens showed comparable mechanical strength to the furnace cooled specimens.
MATERIALS TODAY PHYSICS
(2021)
Article
Materials Science, Ceramics
Yang Jin, Jinfeng Wang, Lin Jiang, Yao Yao, Yangjue Huang, Peng Chen, Wenxue Chang
Summary: This study used a two-step sintering method to refine the microstructures of lead-free 2.0 mol% Mn-doped ceramics, enhancing their energy storage performance; the two-step sintering process resulted in fine grains, significantly improving dielectric breakdown and suppressing domain wall movement; an ultrahigh charge energy storage density was achieved at 28 kV/mm with good temperature insensitivity.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Wenbin Yi, Zhenya Lu, Xingyue Liu, Du Huang, Zhi Jia, Zhiwu Chen, Xin Wang, Huixiang Zhu
Summary: This study investigated the effects of Bi compensation on a new type of piezoceramics, showing that an appropriate amount of Bi compensation can improve the piezoelectric performance, densification, and grain growth of the materials without significantly affecting the phase structure.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Trang An Duong, Chang Won Ahn, Byeong Woo Kim, Mohammad Reza Bafandeh, Hyoung-Su Han, Jae-Shin Lee
Summary: Lead-free K(0.5)Na(0.5)NbO(3-)xSrTiO(3) (KNN-100xST) piezoelectric ceramics were prepared and the effects of SrTiO3 modification on their phase transition behavior and electrical properties were investigated. It was found that a polymorphic phase boundary between the orthorhombic and tetragonal phases could be formed at 5 mol% of SrTiO3 content, leading to an enhanced piezoelectric constant.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Shenghao Wang, Hongbo Liu, Yuanyuan Wang, Hailan Qin, Jianwei Zhao, Zhilun Lu, Zhu Mao, Dawei Wang
Summary: BF-ST ceramics are a novel class of lead-free dielectric materials with notable dielectric constants and remarkable thermal stability. The microstructure and electrical properties of BF-ST ceramics near the morphotropic phase boundary were comprehensively investigated. The findings show that increasing the SrTiO3 content leads to changes in phase fractions and the formation of a distinctive heterogeneous core-shell microstructure.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Hina Sugimoto, Jonas Biggemann, Tobias Fey, Priya Singh, Deepak Khare, Ashutosh Kumar Dubey, Ken-ichi Kakimoto
Summary: A scaffold with high antimicrobial properties was successfully fabricated using (Ba, Ca)(Ti, Zr)O3 (BCTZ) and coated with 13-93 bioactive glass. The polarized surface of the BCTZ scaffold showed a good antibacterial response, resulting in a significant reduction in the survival rate of Escherichia coli bacteria. Overall, this approach can improve biocompatibility, prevent ion leaching, and provide good antibacterial characteristics to the scaffolds.
Article
Chemistry, Multidisciplinary
Shidong Wang, Chenglong Chen, Juan Wang, Chen-Bo-Wen Li, Jinling Zhou, Yi-Xuan Liu, Yu-Qi Jiang, Lifeng Zhu, Chao Li, Wen Gong, Wei Guo, Xiaodong Tang, Fang-Zhou Yao, Ke Wang
Summary: This study reports a synergetic chemo-piezodynamic therapy for treating osteosarcoma. The therapy effectively inhibits the growth of osteosarcoma cells by generating reactive oxygen species, and shows good histocompatibility and no toxic effects in mouse models. This research opens up a new avenue for the customized design of high-tech nanocatalysts for tumor treatment.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Ceramics
Fenghua Wang, Xiaowei Liu, Jian Ma, Bo Wu, Tao Wang, Wenjuan Wu, Min Chen
Summary: The effect of CFO on the microstructure and magnetoelectric properties of (1-x)BTS-BCT-xCFO composites was studied. The presence of CFO increased the grain size and magnetic properties, while deteriorating the electric properties. The optimal magnetoelectric coefficients were obtained at a CFO content of 0.20.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Yanela Mendez-Gonzalez, Anthony Ferri, Elton C. Lima, Ahmad Hamieh, Denis Remiens, Aime Pelaiz-Barranco, Atair C. Silva, Jose de los Santos Guerra
Summary: The structural, microstructural, and electromechanical properties of lead-free BNLBT-x thin films were investigated as a function of lanthanum concentration. The increased lanthanum content led to a decrease in grain size and surface roughness, while also revealing distinct ferroelectric domain structures and the presence of antiferroelectric phases on the surface. The materials showed potential for integration into advanced electronic nanodevices, with reliable switching behavior and noticeable piezoactivity increasing with higher doping content.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Dan Zhao, Yi Feng, Zhipeng Pi, Fan Zhang
Summary: Phase equilibria in the ZrO2-GdO1.5-TaO2.5 (ZGTO) system were experimentally investigated, and the differences between ZGTO and the existing ZrO2-YO1.5-TaO2.5 (ZYTO) were discussed. The study is useful for thermodynamic assessment of ZGTO and can guide the design of novel thermal barrier coatings materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yutaka Ohya, Wingki Mey Hendra, Chika Takai-Yamashita, Takayuki Ban
Summary: Diffusion couples of rutile and corundum single crystals were prepared and examined to study the solid solution and precipitation of corundum in rutile during cooling. Different precipitation forms of corundum were observed under different cooling conditions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiaming Zhan, Yunfa Guo, Hao Wang
Summary: This study systematically investigates the mechanical behaviors of calcium fluoride in humid environments. The effects of water on the deformation and plastic enhancement of CaF2 under indentation are explored through microindentation experiments, atomic simulations, and Raman spectroscopy measurement.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hangfeng Zhang, Henry Giddens, Theo Graves Saunders, Matteo Palma, Isaac Abrahams, Haixue Yan, Yang Hao
Summary: The relationship between low and high frequency tunabilities in tin substituted barium titanate ceramics was investigated. It was found that there are differences in tunabilities at different frequencies due to the different activities of larger ferroelectric domains and polar nanoclusters.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kaibiao Xi, Jiacheng Liu, Beibei Song, Huarong Cheng, Yihao Li, Xiaole Yu, Mupeng Zheng, Mankang Zhu, Yudong Hou
Summary: Composite modulation in the superparaelectric state of the BTBZ-CT system is proposed as an effective strategy to achieve both NTCC and excellent energy storage performance in dielectric ceramics. The addition of BZ and CT to BT ferroelectrics can move the SPE state to the normal use temperature zone, resulting in enhanced NTCC characteristics and energy storage performance. Furthermore, intentional precipitation of CT at grain boundaries can refine the grain size, increase the bandgap, and strengthen the local electric field distribution, thereby enhancing the breakdown electric field.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hamed Salimkhani, Lovro Fulanovic, Till Froemling
Summary: The demand for robust multilayer ceramic capacitors with high-temperature and high-power capabilities is increasing rapidly. However, cost-effective production is a challenge. This study investigates the use of Na0.5Bi0.5TiO3-based materials as promising lead-free options. By adding sintering aids, the sintering temperature of Na0.5Bi0.5TiO3-BaTiO3-CaZrO3-BiAlO3 solid solutions was successfully reduced to 975 degrees C, suitable for co-sintering with Cu electrodes without adverse effects on capacitor properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Mingxing Li, Ran Mo, Zeshui Xu, Jie Zhou, Conglin Zhang, Xuefeng Cui, Fang Ye, Laifei Cheng, Ralf Riedel
Summary: Polymer infiltration and pyrolysis is an effective method for preparing ceramic matrix composites. The transformation of polymer to ceramic during the process affects the residual stress and interface behavior in the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yan Kang, Lin Chen, Chang-Jiu Li, Guan-Jun Yang
Summary: A novel abradable seal coating with low hardness and high bonding strength was successfully designed and prepared. This coating has significantly higher abradability and erosion resistance compared to metal-based coatings, and can retain excellent abradability and have a long lifetime during service.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Qingzhong Song, Xiangdong Zha, Ming Gao, Yingche Ma
Summary: This study analyzes the influence of calcia refractory purity on the properties of calcia crucibles. Higher purity calcia results in well-developed grains and improved hydration resistance, leading to better high-temperature strength and thermal shock resistance. In contrast, lower purity calcia crucibles exhibit inferior properties. Therefore, high-purity calcia is considered a potential refractory for manufacturing oxide crucibles.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sehreish Abrar, Faisal Nazeer, Zhuang Ma, Ling Liu, Abdul Malik, Mustafa Kamal, Abdullah G. Al-Sehemi
Summary: To raise the operating temperature of Si-based ceramic matrix composites (CMCs), researchers have applied thermal/environmental barrier coating (T/EBCs) materials, typically rare earth silicates. However, the high thermal conductivity and the mismatch of thermal expansion have been major challenges in developing new materials that can offer thermal insulation and environmental protection to CMCs. In this study, entropy engineering was used to create a multicomponent equi-atomic single-phase pyro silicate with extremely low thermal conductivity and enhanced water vapor corrosion resistance. The research findings show the potential of high entropy disilicates in achieving ultra-low thermal conductivity and low weight loss in corrosive environments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zi-bo Niu, Daxin Li, Dechang Jia, Zhihua Yang, Kunpeng Lin, Paolo Colombo, Ralf Riedel, Yu Zhou
Summary: In this study, SiBCN ceramics with a special structure were prepared to improve the oxidation resistance. The effect of the structure on oxidation behavior and kinetics was investigated, revealing that the special structure can effectively inhibit heterogeneous oxidation and enhance the oxide layer composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Melike Donmez, Metehan Erdogan, Cihangir Duran
Summary: The limited densification of CeO2 ceramics was improved by using an anorthite-based glass, resulting in high dielectric constant and quality factor with minimum dielectric loss. The CeO2-(anorthite-based) glass ceramic showed promising results in terms of low temperature densification and microwave properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
S. Rahmati, R. G. A. Veiga, J. Mostaghimi, T. Coyle, A. Dolatabadi
Summary: This study provides an atomic-scale description of the high-velocity impact of alpha-Al2O3 particles onto an alpha-Al2O3 substrate during Aerosol Deposition (AD). The results suggest that the crystal orientation plays a crucial role in both plasticity and damage of the nanoparticles. Impact velocity has a direct correlation with plasticity and fragmentation, but adhesion efficiency has only a marginal increase. The crucial element lies in the substrate's surface alterations caused by the fragments left on the substrate after impact.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Bo-Wen Chen, Yan-Mei Kan, De-Wei Ni, Chun-Jing Liao, Hong-Da Wang, Yu-Sheng Ding, Shao-Ming Dong
Summary: This study characterized the long-term and repeated ablation properties of modified Cf/HfC-SiC composites with YB4-Al2O3-Si3N4 under an air plasma torch. The structural stability and viscosity of the oxide layer were found to affect the ablation resistance of the composites. By forming nano c-HfO2 grains and high-viscosity Al-Si-Y-O glassy phase, the structural stability of the oxide layer was improved, resulting in enhanced ablation resistance. However, the oxidation of Si3N4 led to the formation of NO, NO2, and excessive SiO2 glassy phase, which resulted in a porous structure and reduced the viscosity of the oxide layer. Therefore, the addition of Si3N4 decreased the ablation resistance of the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yongxing Wei, Huawei Zhang, Siyuan Dong, Changqing Jin, Chenxing Bai, Junle Dai, Zengzhe Xi, Zhonghua Dai, Zengyun Jian, Li Jin
Summary: In this study, solid solutions of xBi(Ni1/2Hf1/2)O-3-(1 - x)PbTiO3 (xBNH-PT) were synthesized to investigate their phase boundary behaviors and physical properties. The presence of a tetragonal-pseudocubic phase boundary and a spontaneous ferroelectric-relaxor transition at specific compositions were confirmed. The introduction of a tetragonal-pseudocubic phase boundary improved the piezoelectric properties and suppressed the spontaneous ferroelectric-relaxor transition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)