Results 91 to 100 of about 148,147 (298)
, 2009 The oxygen octahedral tilted domains in 0.90(Bi1/2Na1/2)TiO3-0.5(Bi1/2K1/2)TiO3-0.5BaTiO3 lead-free perovskite piezoelectric ceramic have been studied by transmission electron microscopy (TEM). Selected-area electron diffraction patterns shows the 1/2ooo
Jaffe B., Smolenskii G. A., Y. Lereah
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Plasticity of nanocrystalline zirconia ceramics and composites [PDF]
, 1997 The deformation strain rate of nanocrystalline Y-TZP shows an increase by a factor 4 if the grain size decreases from 200 to 100 nm. Real superplastic deformation (strain rate > 10−4 s−1) is observed in these materials at relative low temperature (1100 ...
Boutz, M.M.R. +4 more
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Advanced Engineering Materials, EarlyView.High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin +4 more
wiley +1 more source
Characterizations of Lead Free BNT-BT-KNN Ceramics Synthesized by Microwave Technique [PDF]
, 2014 Ferroelectrics have experienced a great deal of interest for more than half a century. Initially, ferroelectric ceramics were used as capacitor materials due to their high dielectric constants.
Das, Anindita
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Stabilization of Polar Nano Regions in Pb-free ferroelectrics
, 2017 Formation of polar nano regions through solid-solution additions are known to enhance significantly the functional properties of ferroelectric materials.
Abernathy, D. L., +10 more
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Electrical Properties of Lead Free Sr0.8Na0.1Sm0.1Bi4Ti4O15 Ceramics
Procedia Materials Science, 2015 AbstractPolycrystalline Sr1-2xNaxSmxBi4Ti4O15 (SNSBT) belongs to bismuth layer structured ferroelectric (BLSF) materials with x=0.1 have been prepared by sol gel method. XRD analysis confirms single phase formation with orthorhombic structure. Scanning electron micro graph of the material shows plate like grains with random orientation.
Ashok, K., Mamatha, B., Sarah, P.
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Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma
Advanced Engineering Materials, EarlyView.The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie +4 more
wiley +1 more source
Advanced Electronic MaterialsIn 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 +3 more
doaj +1 more source
Preparation, Properties and Applications of Bi2O3-Rich Lead-Free Sealing Glass Ceramics [PDF]
, 2012 本研究对富含Bi2O3无铅微晶封接玻璃的制备、性能和应用进行了研究；分别利用傅立叶转变红外分析测试仪（FTIR）、拉曼光谱分析仪、X－射线衍射分析仪（XRD）、示差扫描量热分析仪（DSC）、热膨胀系数仪（DIL）和超高电阻测试仪等分别对该封接玻璃的结构、析晶、玻璃化转变温度（Tg）、玻璃软化温度（Tf）、热膨胀系数（α）和电阻率（ρ）等进行研究。 本文理论研究方面，包含下述3项内容。其中，在第（二）项和第（三）项中特别研究了采用“模压成型—热处理方法”制备的样品过程中，热处理温度对其Tg、Tf ...
杜振波
core
Transferring lead-free piezoelectric ceramics into application
Journal of the European Ceramic Society, 2015 After twenty years of partly quiet and ten years of partly enthusiastic research into lead-free piezoceramics there are now clear prospects for transfer into applications in some areas. This mimics prior research into eliminating lead from other technologies that resulted in restricted lead use in batteries and dwindling use in other applications.
Jürgen Rödel +5 more
openaire +2 more sources