Results 31 to 40 of about 8,706 (260)

High energy storage density over a broad temperature range in sodium bismuth titanate-based lead-free ceramics

Scientific Reports, 2017
A series of (1-x)Bi0.48La0.02Na0.48Li0.02Ti0.98Zr0.02O3-xNa0.73Bi0.09NbO3 ((1-x)LLBNTZ-xNBN) (x = 0-0.14) ceramics were designed and fabricated using the conventional solid-state sintering method.
Haibo Yang, Fei Yan, Ying Lin, Tong Wang, Fen Wang   +4 more
doaj   +1 more source

Structure and dielectric properties of NBT-xBT-ST lead-free ceramics for energy storage [PDF]

Journal of Advanced Dielectrics, 2018
(0.74−x)(Na0.5Bi0.5)TiO3-xBaTiO3-0.26SrTiO3 (x=0∼0.1) (abbreviated as NBT-xBT-ST) lead-free ceramics were fabricated by a solid-state reaction method. The effect of Ba doping amount x on the structure and energy storage properties of NBT-xBT-ST ceramics ...
Wen-Qin Luo, Zong-Yang Shen, Yuan-Ying Yu, Fu-Sheng Song, Zhu-Mei Wang, Yue-Ming Li   +5 more
doaj   +1 more source

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

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Broad-high operating temperature range and enhanced energy storage performances in lead-free ferroelectrics

Nature Communications, 2023
The immense potential of lead-free dielectric capacitors in advanced electronic components and cutting-edge pulsed power systems has driven enormous investigations and evolutions heretofore.
Weichen Zhao, Diming Xu, Da Li, Max Avdeev, Hongmei Jing, Mengkang Xu, Yan Guo, Dier Shi, Tao Zhou, Wenfeng Liu, Dong Wang, Di Zhou   +11 more
doaj   +1 more source

Achieving high energy storage performance and efficiency in lead-free SrTiO3 ceramics via neodymium and lithium co-doping technique

Journal of Asian Ceramic Societies, 2023
There is an immediate demand for eco-friendly, high-performance, and highly stable energy storage materials for pulse power systems. Ceramics based on SrTiO3 have a high breakdown strength (BDS) and dielectric constant.
Mahmoud S. Alkathy, Srinivas Pattipaka, Mansour K. Gatasheh, H. A. Kassim, Mohamed Saad Daoud, Jose A. Eiras   +5 more
doaj   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Tungsten Bronze-Type Ceramics for Temperature-Stable Energy Storage Properties: A Feasibility Study

Crystals, 2023
The temperature-dependent energy storage properties of four tungsten bronze-type ceramics are studied together with an investigation of their structure and temperature-dependent permittivity response, i.e., Ba6Ti2Nb8O30 (BTN), Ba6Zr2Nb8O30 (BZN ...
Xi Shi, Neamul H. Khansur
doaj   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Realizing simultaneously excellent energy storage and discharge properties in AgNbO3 based antiferroelectric ceramics via La3+ and Ta5+ co-substitution strategy

Journal of Materiomics, 2023
AgNbO3 based antiferroelectric (AFE) ceramics have large maximum polarization and low remanent polarization, and thus are important candidates for fabricating dielectric capacitors.
Yuqi Zhou, Shuaibing Gao, Jie Huang, Meng Shen, Shenglin Jiang, Yunbin He, Qingfeng Zhang   +6 more
doaj   +1 more source