Improved Process for Hydrothermal Lead-Free Piezoelectric Powders and Performances of Sintered (K_0.48Na_0.52)NbO₃ Ceramics

スポンサーリンク

概要

• 論文の詳細を見る

• In this study, we report some improvements in a hydrothermal method for lead-free piezoelectric powders and the performance of the sintered (K_0.48Na_0.52)NbO₃ ceramics. To increase the obtained powder weight per source solution volume, the hydrothermal reaction conditions were modified. This improvement is important for mass production; however, it resulted in a larger particle size dispersion. Therefore, we examined to introduced the ball milling process that is useful for dense (K_0.48Na_0.52)NbO₃ ceramics. When a large amount of powder was obtained, it took a long time to eliminate the residual alkaline ions in the hydrothermal powders by a washing process. Therefore, a neutralization was conducted in the powder washing process. Using this powder, a solid solution of (K,Na)NbO₃ ceramics was synthesized. The relative density was successfully increased. Concerning the electrical properties, the relative permittivity was improved, and the piezoelectric constant $d_{33}$ was also increased from 114 to 130 pC/N.

• 2011-07-25

著者

• MAEDA Takafumi

  Graduate School of Engineering, Hokkaido University

• Morita Takeshi

  Graduate School of Engineering, Shizuoka University, Hamamatsu 432-8561, Japan

• Hemsel Tobias

  Mechatronics and Dynamics, University of Paderborn, Fuerstenallee 11, 33102 Paderborn, Germany

• Hemsel Tobias

  Mechatronics and Dynamics, University of Paderborn, 33102 Paderborn, Germany

• Morita Takeshi

  Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8563, Japan

関連論文

• MCH-04 SHAPE MEMORY PIEZOELECTRIC ACTUATOR WITH ASYMMETRIC VOLTAGE OPERATION(Micro/Nanomechatronics II,Technical Program of Oral Presentations)
• P-12 Experiments and Analysis of Sweating Control in Human Thermoregulation System(Proceedings of the 56th Meeting of Japan Society of Physiological Anthropology)
• PB2-4 Influence of Acquired Color Deficiency owing to Aging on Human Sleep(Proceedings of The 8th International Congress of Physiological Anthropology)
• Improved Process for Hydrothermal Lead-Free Piezoelectric Powders and Performances of Sintered (K0.48Na0.52)NbO3 Ceramics
• DC Bias Effects on Piezoelectric Constants of Rhombohedral Pb(Zn1/3Nb2/3)O3–PbTiO3 Single Crystals
• MCH-07 Improvement of self-sensing piezoelectric actuator control using permittivity change detection(Micro/Nanomechatronics III,Technical Program of Oral Presentations)
• Effect of Deposition Time on Film Thickness and Their Properties for Hydrothermally-Grown Epitaxial KNbO3 Thick Films
• Growth of Epitaxial KNbO3 Thick Films by Hydrothermal Method and Their Characterization
• Piezoelectric Properties of Li-Doped (K.Na.)NbO Ceramics Synthesized Using Hydrothermally-Derived KNbO and NaNbO Fine Powders (Special Issue : Advanced Electromaterials)
• Preisach Modeling of Electric-Field-Induced Strain of Ferroelectric Material Considering 90° Domain Switching (Special Issue : Ferroelectric Materials and Their Applications)
• Nondoped Potassium Niobate Ceramics Synthesized by Hydrothermal Method with Optimum Temperature Condition
• Utilization of Permittivity Memory Effect for Position Detection of Shape Memory Piezoelectric Actuator
• Measurements of Standard-Viscosity Liquids Using Shear Horizontal Surface Acoustic Wave Sensors
• Piezoelectric Properties of CuO-Doped (K,Na)NbO
• Resonant-Type Smooth Impact Drive Mechanism Actuator Operating at Lower Input Voltages
• Resonant-Type Smooth Impact Drive Mechanism Actuator Operating at Lower Input Voltages
• Resonant-Type Smooth Impact Drive Mechanism Actuator with Two Langevin Transducers

もっと見る 閉じる

スポンサーリンク