Results 81 to 90 of about 25,661 (302)

Lead-free piezoelectric ceramics for high-frequency ultrasound transducers

, 2007
2007 IEEE Ultrasonics Symposium, IUS, New York, NY, 28-31 October 2007This paper presents the latest development of lead-free piezoelectric ceramics and their application to the high frequency ultrasound transducers.
R. M. Chen, D. M. Lin, Shung, KK, Lin, DM, Q. F. Zhou, D. W. Wu, Zhou, QF, H. L. W. Chan, K. K. Shung, Chan, HLW, Wu, DW, Chen, RM   +11 more
core   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Vogel-Fulcher analysis of relaxor dielectrics with the tetragonal tungsten bronze structure : Ba6MNb9O30 (M = Ga, Sc, In)

, 2015
In-depth analysis of the relaxor behaviour of Ba6MNb9O30 (M= Ga, Sc, In) tetragonal tungsten bronze (TTB) ceramics was carried out. Powder x-ray diffraction and scanning electron microscopy were performed in order to confirm the formation of desired ...
Morrison, Finlay D., Rotaru, Andrei
core   +1 more source

Field Report from Collaborative Research Center 1625: Heterogeneous Research Data Management Using Ontology Representations

Advanced Engineering Materials, EarlyView.
A unified research data management framework for heterogeneous materials data is presented. The system integrates multimodal datasets using ontologies and knowledge graphs, enabling interoperability and FAIR (findable, accessible, interoperable, reusable) data principles. By linking data across scales and workflows, it supports reproducible, Artifitial
Doaa Mohamed, Samuel García Vázquez, Behnam Mardani, Victor Dudarev, Alfred Ludwig, Maribel Acosta, Markus Stricker   +6 more
wiley   +1 more source

High Energy Storage and Excellent Thermal Stability in Ternary (1−x)[0.94(Bi0.5Na0.5)TiO3‐0.06BaTiO3]‐xCa(Mg1/3Nb2/3)O3 Lead‐Free Ferroelectric Ceramics

Advanced Electronic Materials
In this work, a new type of ternary lead‐free ferroelectric ceramics (1−x)[0.94(Bi0.5Na0.5)TiO3‐0.06BaTiO3]‐xCa(Mg1/3Nb2/3)O3 is synthesized by traditional solid‐state reaction method (x = 0.02, 0.04, 0.06, 0.07, 0.08, 0.10, and 0.15).
Haiyan Kuang, Xiang He, V'yunov Oleg, Dongfang Pang   +3 more
doaj   +1 more source

Lead-Free Ferroelectric Ceramics with Perovskite Structure [PDF]

, 2011
Ferroelectric ceramics were discovered in the 1940s in polycrystalline barium titanate (von Hippel et al., 1946; Wul & Goldman, 1945), since then, there has been a continuous succession of new materials and technology developments that have led to a significant number of industrial and commercial applications. Structurally speaking there are four types
Rigoberto Lopez-Juarez, Federico Gonzalez, Maria-Elena Villafuerte-Castrejo   +2 more
openaire   +1 more source

Lead-free piezoelectric ceramics with ultralow mechanical quality factor [PDF]

© 2025 The Authors. Published by Elsevier Ltd.The mechanical quality factor (Qm) is a key parameter in the applications of piezoelectric ceramics. For force sensors and acoustic transducers, low Qm allows a broadened frequency range for signal reception.
Smith, Graham, Gallardo-Durán, JY, Pérez, GMH, Gallardo-Durán, Johana Y., Hu, Wanting, Yan, H, Tang, Xuyao, Yan, Haixue, Tang, X, Viola, Giuseppe, Koval, V, Smith, G, Koval, Vladimir, Viola, G, Hu, W, Herrera Pérez, Guillermo M.   +15 more
core   +1 more source

Effect of Sintering Conditions on the Electrical Properties of Lead-Free Piezoelectric Potassium Sodium Niobate-Based Ceramics

, 2022
Lead-free piezoelectric 0.92(K0.445Na0.5Li0.05)NbO3-0.08BaZrO3 (KNLN-BZ) ceramics were prepared via conventional sintering. Single-step, 2-step and 3-step temperature-controlled conditions were designed.
Yi Quan, Jian Zhuang, Yan Tang, Kun Zheng, Wei Ren, Jinyan Zhao, Zhe Wang, Gang Niu, Lingyan Wang   +8 more
core   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Ultra-high energy harvester performance in KNN-based textured piezoceramics via multiscale reconfiguration design

Journal of Advanced Ceramics
The lower electromechanical performance of lead-free piezoelectric materials remains a critical bottleneck impeding their ability to replace lead-based materials in energy harvesting.
Caixia Zhu, Jin Qian, Luomeng Tang, Cheng Shi, Bo Shen, Jiwei Zhai   +5 more
doaj   +1 more source