Results 31 to 40 of about 321,908 (334)

Lead-free piezoceramics with giant strain in the system Bi0.5Na0.5TiO3-BaTiO3-K0.5Na0.5NbO3. I. Structure and room temperature properties [PDF]

, 2008
Lead-free piezoelectric ceramics, (1-x-y)Bi0.5Na0.5TiO3-xBaTiO(3)-yK(0.5)Na(0.5)NbO(3) (0.05
Aulbach, Emil, Granzow, Torsten, Jo, Wook, Kleebe, Hans-Joachim, Kounga, Alain Brice, Roedel, Juergen, Zhang, Shan-Tao   +6 more
core   +1 more source

Improving the functional properties of (K0.5Na0.5)NbO3 piezoceramics by acceptor doping [PDF]

, 2015
ZrO2 and TiO2 modified lead-free (K0.5Na0.5)NbO3 (KNN) piezoelectric ceramics are prepared by a conventional solid-state reaction. The effect of acceptor doping on structural and functional properties is investigated.
Bril, X, Dezanneau, Guillem, García García, José Eduardo, Mestres, Lourdes, Ochoa Guerrero, Diego A., Vendrell Villafruela, Xavier   +5 more
core   +3 more sources

An equivalent dipole analysis of PZT ceramics and lead-free piezoelectric single crystals [PDF]

, 2016
The recently proposed Equivalent Dipole Model for describing the electromechanical properties of ionic solids in terms of 3 ions and 2 bonds has been applied to PZT ceramics and lead-free single crystal piezoelectric materials, providing analysis in ...
Jaffe B., Safari A., Zhang S.
core   +2 more sources

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Piezoelectric nonlinearity and frequency dispersion of the direct piezoelectric response of BiFeO3 ceramics [PDF]

, 2012
We report on the frequency and stress dependence of the direct piezoelectric d33 coefficient in BiFeO3 ceramics. The measurements reveal considerable piezoelectric nonlinearity, i.e., dependence of d33 on the amplitude of the dynamic stress.
Andreja Bencan, Dragan Damjanovic, Goran Drazic, Marija Kosec, Postnikov V. S., Tadej Rojac   +5 more
core   +2 more sources

Geometric Optimization and Mechanical Performance Enhancement of Auxetic Structures for High‐Impact Applications Through Fused Deposition Modeling

Advanced Engineering Materials, EarlyView.
This study explores the mechanical performance of three auxetic structures, identifying a re‐entrant‐star hybrid as the most effective for impact absorption. Finite element simulations and experiments demonstrate significant gains in energy absorption and flexural strength after geometric optimization. This study investigates the mechanical performance
Malik Hassan, Manjusri Misra, Alexander Bardelcik, Stefano Gregori, Amar K. Mohanty   +4 more
wiley   +1 more source

Synthesis and characterizations of lead free KNNT & Ni doped KNNT ceramics [PDF]

, 2012
In order to replace the lead based ceramics with the same properties of piezoelectricity and other electrical properties, lead free ceramics like KNNT perovskites were developed.. The samples with KNNT and Ni-doped KNNT ceramics were prepared.
Kamde, Meeta Ashok
core  

Electrical properties of KTa0.65Nb0.35O3 lead-free ceramics

Processing and Application of Ceramics, 2020
In the present study, lead-free KTa0.65Nb0.35O3 ceramics were prepared by solid state reaction method using successive calcination steps in order to ensure the complete reaction of the system. The X-ray diffraction analyses of the prepared ceramics have shown the formation of a perovskite structure without any secondary phases. The increase
Felicia Gheorghiu, Mihai Asăndulesa, Lavinia Curecheriu   +2 more
openalex   +4 more sources

Field-induced phase transition in Bi1/2Na1/2TiO3-based lead-free piezoelectric ceramics [PDF]

, 2010
The origin of the electric field-induced strain in the polycrystalline ceramic 0.92Bi(1/2)Na(1/2)TiO(3)-0.06BaTiO(3)-0.02K(1/2)Na(1/2)NbO(3) was investigated using in situ high-resolution X-ray and neutron diffraction techniques.
Antonio Cervellino, Bergamaschi, Cross, Cross, Daniels, Daniels, Dollase, Fong, Frantti, Ge, Glazer, Hall, Hansen, Hartmut Fuess, Helmut Ehrenberg, Hoelzel, Jo, Jones, Jones, Jones, Kling, Lebon, Maier, Manuel Hinterstein, Markus Hölzel, Megaw, Menou, Menou, Michael Knapp, Muller, Patterson, Peng, Ranjan, Roisnel, Saito, Schmitt, Schmitt, Schmitt, Schoenau, Takenaka, Thompson, Wook Jo, Xu, Yu, Zhang, Zhang, Zhang, Zhou   +47 more
core   +1 more source