Results 71 to 80 of about 25,661 (302)
Dielectric Characteristics of the Lead-free Piezoelectric Ceramics K0.50Na0.50Nb0.95Ta0.05O3
, 2012 [[abstract]]In order to improve the sintering density and dielectric properties of the lead-free K0.5Na0.5NbO3-based ceramics, by the use of solid-state reaction, part of the Nb atoms are substituted by the Ta atoms to form K0.5Na0.5Nb0.95Ta0.05O3 ...
Tzou, Wen-Cheng +6 more
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In order to obtain large room-temperature electrocaloric effect (ECE) and wide operation temperature range simultaneously in lead-free ceramics, we proposed designing a relaxor ferroelectric with a Tm (the temperature at which the maximum dielectric ...
Shengguo Lu +3 more
core +1 more source
Synthesis and processing of KNN powders and thick films for MEMS devices [PDF]
, 2012 Pb-free piezoelectric materials have grown in importance through increased environmental concern related to the presence of Pb and the subsequent legislation that has arisen including directives such as Waste Electrical and Electronic Equipment (WEEE ...
Lusiola, Tony
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Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics
Advanced Engineering Materials, EarlyView.Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost +4 more
wiley +1 more source
BiFeO3-doped (Na0.5K0.5)NbO3 lead-free piezoelectric ceramics
Science and Technology of Advanced Materials, 2008 Lead-free piezoelectric ceramics (1−x)(Na0.5K0.5)NbO3-xBiFeO3 (x=0~0.07) were synthesized by the solid-state reaction. Differential scanning calorimetry (DSC) measurements revealed that an increase in the amount of BiFeO3 dopant resulted in a decrease in
Xueyi Sun et al
doaj
The synthesis and characterisation of lead-free piezoelectric ceramics
, 2012 With a growing awareness of the environmental and health hazards of lead, there has been renewed interest in developing lead-free alternatives to lead zirconate titanate (PZT), which currently dominates the market for piezoelectric materials. Some of the
Roberts, William Michael
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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 +9 more
wiley +1 more source
A REVIEW ON LEAD-FREE PIEZOELECTRIC CERAMICS STUDIES IN CHINA
, 2011 There are a large number of research publications on the hot topic of environmental friendly lead-free piezoelectric materials worldwide in the last decade.
YONG-XIANG LI, YI-QING LU
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Piezoelectric Properties of Lead-Free Na0.5K0.5NbO3 Ceramics Co-Doped with NiO and CuO
, 2010 Lead-free Na0.5K0.5NbO3 + 0.5 mol% NiO+y mol% CuO (y = 0∼3) piezoelectric ceramics have been prepared by conventional solid state reaction technique. The crystal structure and microstructure were analyzed using X-ray diffraction and scanning electron ...
태원필, 강상규
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Characterization of lead-free piezoelectric ceramics
, 2020 This project is focused on lead-free piezoelectric ceramics which are meda in CEITEC. Behaviour of these ceramics is quite different from the lead one. The first part is dedicated to dielectrics and its polarisation techniques.
Šťastná, Magdaléna
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