Results 61 to 70 of about 746,515 (283)

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
doaj   +1 more source

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
core   +1 more source

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

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

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  

Optimized strain performance in <001>-textured Bi0.5Na0.5TiO3-based ceramics with ergodic relaxor state and core—shell microstructure

Journal of Advanced Ceramics, 2022
Herein, a high strain of ∼0.3% with a small hysteresis of 43% is achieved at a low electric field of 4 kV/mm in the highly -textured 0.97(0.76Bi0.5Na0.5TiO3−0.24SrTiO3)−0.03NaNbO3 (BNT−ST−0.03NN) ceramics with an ergodic relaxor (ER) state, leading to a ...
Xuefan Zhou, Huiping Yang, Guoliang Xue, Hang Luo, Dou Zhang   +4 more
semanticscholar   +1 more source

Sustainable Synthesis of Bio‐Based Magnetic and Conductive Wood for Electromagnetic Interference Shielding Applications

Advanced Engineering Materials, EarlyView.
A wood‐based magnetic and conductive material called Magwood (MW), capable of blocking almost 99.99% of electromagnetic waves (in the X‐band frequency range), is synthesized using a simple, solvent‐free process. MW is lightweight, resists water, and is flame‐retardant, making it a promising alternative for shielding electronics. The rapid proliferation
Akash Madhav Gondaliya, Majed Amini, Mohammad Arjmand, Earl Johan Foster   +3 more
wiley   +1 more source

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

Refractory concrete: A material that offers new ceramic opportunities. [PDF]

, 2011
Refractory concretes (RC) are industrial materials used most commonly in high temperature applications, primarily in the steel and glass industries. In most cases they are a mix of refractory aggregate’s chosen for specific hot engineering applications ...
Alkandari, Fahad, Bremner, Alasdair
core  

Crystallographic and magnetic identification of secondary phase in orientated Bi5Fe0.5Co0.5Ti3O15 ceramics [PDF]

, 2011
Oxide materials which exhibit both ferroelectricity and ferromagnetism are of great interest for sensors and memory applications. Layered bismuth titanates with an Aurivillius structure, (BiFeO3)nBi4Ti3O12, can possess ferroelectric and ferromagnetic
Bell, Andrew J., Brown, Andrew P., Comyn, Tim P., Harington, John, Keeney, Lynette, Kilcoyne, Susan H., Kulkarni, Santosh, Palizdar, Meghdad, Pemble, Martyn, Quinne, Christopher, Roy, Saibal, Ward, Mike B., Whatmore, Roger   +12 more
core   +1 more source