Results 51 to 60 of about 15,031 (183)

Fabrication of Ceramics with Highly Controlled Microstructures by Advanced Fine Powder Processing

KONA Powder and Particle Journal, 2018
Ceramics with highly controlled microstructures at all levels from micrometer to nanometer order are required to improve their properties. To realize such ceramics, advances in powder processing are indispensable.
Yoshio Sakka
doaj   +1 more source

Ultrahigh electrostrain with excellent fatigue resistance in textured Nb5+-doped (Bi0.5Na0.5)TiO3-based piezoceramics

Journal of Advanced Ceramics, 2023
(Bi0.5Na0.5)TiO3 (BNT)-based lead-free piezoceramics exhibit excellent electric field-induced strain (electrostrain) properties, but often suffer from large hysteresis and poor fatigue resistance, which strongly limit their applications. Here, <00l>
Lixiang Lai, Zhihao Zhao, Shuo Tian, Bao Ou, Gaoyuan Liang, Bin Li, Yejing Dai   +6 more
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Texture and anisotropy of hot-pressed h-BN matrix composite ceramics with in situ formed YAG

Journal of Advanced Ceramics, 2022
Textured hexagonal boron nitride (h-BN) matrix composite ceramics were prepared by hot-pressing using different contents of 3Y2O3−5Al2O3 (molar ratio of 3:5) as the sintering additive.
Zhuo Zhang, Xiaoming Duan, Zhuo Tian, Yujin Wang, Lan Wang, Lei Chen, Baofu Qiu, Delong Cai, Peigang He, Dechang Jia, Yu Zhou   +10 more
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Tetragonal (Ba, Ca) (Zr, Ti)O3 textured ceramics with enhanced piezoelectric response and superior temperature stability

Journal of Materiomics, 2022
Lead-free ceramics with both high piezoelectric response and good temperature stability are urgently demanded for electromechanical conversion devices.
Qiangwei Kou, Bin Yang, Yuan Sun, Shuai Yang, Linjing Liu, Hang Xie, Yunfei Chang, Shantao Zhang, Fei Li   +8 more
doaj   +1 more source

Measuring the interaction force between a high temperature superconductor and a permanent magnet

, 1999
Repulsive and attractive forces are both possible between a superconducting sample and a permanent magnet, and they can give place to magnetic levitation or free-suspension phenomena, respectively.
Jorge, G. A., Rodriguez, E., Valenzuela, S. O.   +2 more
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Influence of Ca substitution by Mg on the Ca3Co4O9 performances [PDF]

, 2014
Ca3-xMgxCo4O9 polycrystalline thermoelectric ceramics with small amounts of Mg have been synthesized by the classical solid state method. Microstructural characterizations have shown that all the Mg has been incorporated into the Ca3Co4O9 structure and ...
Chocarro, Cristina, Constantinescu, G., Díez, J.C., Madre, M.A., Rasekh, SH., Sotelo, A., Torres, M.A.   +6 more
core   +3 more sources

Simultaneous achievement of large strain, low hysteresis, and high-temperature stability in textured BT-based piezoelectric ceramics

Journal of Advanced Ceramics
BaTiO3 (BT)-based piezoceramics with large temperature-stable strains and low hysteresis are urgently needed for high-precision actuators because of increasing environmental problems. Here, tetragonal [001]c-textured (Ba0.98Ca0.02)(Ti0.96Sn0.04)O3 (BCTS)
Xiyue Zhang, Zhe Wang, Peng Li, Yingchun Liu, Juan Du, Jigong Hao, Wei Li, Jiwei Zhai   +7 more
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Heat exchanger for electrothermal devices [PDF]

, 1986
An improved electrothermal device is disclosed. An electrothermal thruster utilizes a generally cylindrical heat exchanger chamber to convert electricity to heat which raises the propellant temperature.
Marinos, Charalampus, Mirtich, Michael J., Penko, Paul F., Sovey, James S., Zavesky, Ralph J.   +4 more
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Effect of sintering temperature and heat treatment on electrical properties of indium oxide based ceramics [PDF]

, 2008
Indium oxide based ceramics with bismuth oxide addition were sintered in air in the temperature range 800-1300 ºC. Current-voltage characteristics of In2O3-Bi2O3 ceramics sintered at different temperatures are weakly nonlinear.
Bondarchuk, AN, Bulpett, R, Glot, AB, Jones, BJ, Mazurik, SV, Verma, N   +5 more
core  

Fabrication of Textured 0.685(Na_0.5Bi_0.5)TiO₃-0.065BaTiO₃-0.25SrTiO₃ Electrostrictive Ceramics by Templated Grain Growth Using NaNbO₃ Templates and Characterization of Their Electrical Properties

Crystals
Electrostrictive materials based on (Na0.5Bi0.5)TiO3 are promising lead-free candidates for high-precision actuation applications, yet their properties require further improvement.
Kiran Andleeb, Doan Thanh Trung, John G. Fisher, Tran Thi Huyen Tran, Jong-Sook Lee, Woo-Jin Choi, Wook Jo   +6 more
doaj   +1 more source