Results 171 to 180 of about 126,316 (253)
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ACS Applied Bio Materials, 2020
In this study, hydroxyapatite (HA)-sodium potassium niobate (NKN) composites with varying concentrations of NKN (10, 20, and 30 wt %) were optimally developed at 1075 °C for 2 h.
Aloke Verma +5 more
semanticscholar +1 more source
In this study, hydroxyapatite (HA)-sodium potassium niobate (NKN) composites with varying concentrations of NKN (10, 20, and 30 wt %) were optimally developed at 1075 °C for 2 h.
Aloke Verma +5 more
semanticscholar +1 more source
Solid State Communications, 1986
Abstract Electron diffraction and high resolution electron microscopy reveal the presence of incommensurate structures in lead potassium niobate, lead sodium niobate and in mixed crystals. The incommensurability can be described either as being due to the presence of quasi-periodic “diffuse” anti-phase boundaries or as being due to the presence of ...
C. Manolikas +2 more
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Abstract Electron diffraction and high resolution electron microscopy reveal the presence of incommensurate structures in lead potassium niobate, lead sodium niobate and in mixed crystals. The incommensurability can be described either as being due to the presence of quasi-periodic “diffuse” anti-phase boundaries or as being due to the presence of ...
C. Manolikas +2 more
openaire +1 more source
ACS Biomaterials Science & Engineering, 2020
Besides the excellent osteoconductivity and biocompatibility of 45S5 bioglass (BG), poor mechanical and electrical properties as well as susceptibility toward bacterial adhesion limit its widespread clinical applications.
Aloke Verma +3 more
semanticscholar +1 more source
Besides the excellent osteoconductivity and biocompatibility of 45S5 bioglass (BG), poor mechanical and electrical properties as well as susceptibility toward bacterial adhesion limit its widespread clinical applications.
Aloke Verma +3 more
semanticscholar +1 more source
Hot Pressing of Potassium‐Sodium Niobates
Journal of the American Ceramic Society, 1962Compositions in the system KNbO 3 ‐NaNbO 2 have been hot‐pressed to yield ceramics with relative densities greater than 99%. Because these materials lack any degree of pyroplastic behavior, temperatures approaching those required for air sintering are ...
R. E. JAEGER, L. EGERTON
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High-temperature phases of sodium niobate-potassium niobate solid solutions
Ferroelectrics, 1976The high-temperature phases of NaNbO3-KNbO3 solid solutions consisting of 10, 20 and 35 mole % potassium were studied up to 800 K with the aid of a high-temperature furnace connected to an x-ray diffractometer. From the measurements of the lattice parameters and the intensities of some weak difference reflections as a function of temperature the tilt ...
M. Ahtee, A. M. Glazer
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2013 Seventh International Conference on Sensing Technology (ICST), 2013
Many ceramics have been studied due to their importance in the fabrication of multilayer ceramic capacitors and actuators. Potassium Sodium Niobate (K0.5Na0.5NbO3) is one of the most promising candidate of lead free piezoelectric ceramics used in sensors and actuators. K0.5Na0.5NbO3 (KNN) was successfully synthesized by solid state reaction method.
Asha Dahiya, O. P. Thakur, J. K. Juneja
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Many ceramics have been studied due to their importance in the fabrication of multilayer ceramic capacitors and actuators. Potassium Sodium Niobate (K0.5Na0.5NbO3) is one of the most promising candidate of lead free piezoelectric ceramics used in sensors and actuators. K0.5Na0.5NbO3 (KNN) was successfully synthesized by solid state reaction method.
Asha Dahiya, O. P. Thakur, J. K. Juneja
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Sodium potassium niobate-based lead-free piezoelectric ceramics
2021Due to the toxicity of lead, there is an urgent need to develop lead-free alternatives to replace the currently dominant lead-based piezoelectrics such as lead zirconate titanate (PZT). (Na_[0.5]K_[0.5])NbO₃ (NKN)-based piezoelectrics are promising because of their relatively high Curie temperatures and piezoelectric coefficients among the non-lead ...
Huidong Li, Wei-Heng Shih, Wan Y. Shih
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Hydrothermal Synthesis of Sodium-Potassium Niobate Nanopowders
Key Engineering Materials, 2008Sodium-potassium Niobate (K0.4Na0.6NbO3, KNN) nanopowders were prepared by hydrothermal synthesis at the temperature range of 140-180°C for 12-48h using Nb2O5, NaOH and KOH as source materials. By means of XRD and SEM techniques, the effects of composition and hydrothermal treatment process, such as the rate of [R]/[Nb], the concentration of the alkali,
Shi Ping Wang +2 more
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Electrical properties of piezoelectric sodium-potassium niobate
Journal of the European Ceramic Society, 2004Piezoelectric material is one of the most important components of the micro-electro mechanical system (MEMS). Most piezoelectrics have useful multi-functions for MEMS, e.g. sensor, actuator and transducer. An AFM cantilever, scanning mirror device and pumping system for a micro-chamber, are the typical applications of piezoelectric material on MEMS ...
M. Ichiki, L. Zhang, M. Tanaka, R. Maeda
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Journal of Physics D: Applied Physics, 2020
The ability of hydroxyapatite (HA) to convert readily into an electret under low polarizing fields (⩽1 kV cm−1) makes it as an excellent substitute for electro-active prosthetic implants.
A. Saxena, K. Kakimoto, A. Dubey
semanticscholar +1 more source
The ability of hydroxyapatite (HA) to convert readily into an electret under low polarizing fields (⩽1 kV cm−1) makes it as an excellent substitute for electro-active prosthetic implants.
A. Saxena, K. Kakimoto, A. Dubey
semanticscholar +1 more source