Dissertation > Excellent graduate degree dissertation topics show

The Investigation of Low Temperature Sintering of PNN-PZT Ceramics Materials

Author: GaoLei
Tutor: JiangShengLin
School: Huazhong University of Science and Technology
Course: IC Engineering
Keywords: piezoelectric speaker low sintering temperature PNN-PZT
CLC: TM282
Type: Master's thesis
Year: 2012
Downloads: 35
Quote: 0
Read: Download Dissertation

Abstract


With the development of portable electronic products toward the small, light, thindirection, multi-layer chip structure in terms of piezoelectric transformers, speakers andfilters are widely used. The match between the ceramic material and the inner electrode isone of the key technologies. In view of the inner electrode with the characteristics of thebase metal silver high conductivity, low melting point（960℃）, the ceramic material whichis co-fired with it must have properties as follows: high-voltage constant d33, highelectromechanical coupling coefficient Kp, low dielectric loss tanδ and low mechanicalquality factor Qm and electrical properties, at the same time, a lower sintering temperatureis requested, too. In order to lower sintering temperature, all of the researches are done onPb(Ni1/3Nb2/3)O3-Pb（Zr,Ti）O3piezoelectric ceramics.First of all, the study on the properties of the system PNN-PZT with different Zr/Tiratio and PNN content indicated the best porperties. The results show that, when the Zr/Tiratio is41/59and the PNN content is0.35, we got the highest dielectric and piezoelectricproperties. The main parameters are: d33=538pC/N，Kp=0.62，Qm=61，ε33T/ε0=3381，tanδ=0.0161.Then, xwt.%0.5Pb0-0.5B2O3and0.1wt.%CuO-xwt.%LiBiO2were added in PNN-PZTdesperately to lower the sintering temperature. We study how the sintering behavior, phasestrucrue, microstructrue and electrical properties changed with the change of the content ofsintering aids. The results show that: when the content of0.5Pb0-0.5B2O3is0.5wt.%, theceramic got the best properties at the sintering temperature of1060℃: d33=479pC/N，Kp=0.55，Qm=79，ε33T/ε0=2904，tanδ=0.0166；when the content of LiBiO2is1wt.%, theceramic got the best properties at the sintering temperature of1000℃: d33=538pC/N，Kp=0.62，Qm=61，ε33T/ε0=3381，tanδ=0.0161。Lastly, since the sintering temperature is still higher than the volatilization temperatureof PbO, PbO can volatilize during the sintering. The infuce of excess PbO on properties ofpiezoelectric ceramics were0.35Pb(Ni1/3Nb2/3)O3-0.65Pb(Zr0.41Ti0.59)O3also disucced. The sintering temperature can be reduced to980℃, and the properties were higher: d33=567pC/N， Kp=0.61，Qm=62，ε33T/ε0=3442，tanδ=0.0154.

Related Dissertations

  1. Research on Fabrication of Functionally Graded Piezoelectric Materials and Its Application as Bending Actuator,TB34
  2. Research on the Fabrication and Properties of PNN-PZT Piezoelectric Fibers with Metal Core,TM282
  3. PNNZT ternary piezoelectric ceramics B site preparation and properties of oxide,TM282
  4. Research on Preparation and Properties for PMS-PNN-PZT Piezoelectric Thick Film Material,TM282
  5. Study on the Properties and Doping Modification of PMN-PNN-PZT Quaternary Piezoelectric Ceramics,TM282
  6. Synthesis of CaTiO3:Zn Microwave Dielectric Nano-Ceramics by Sol-gel Method,TQ174.6
  7. The LTCC the magnetic dielectric composite ceramic preparation and electromagnetic properties of,O482.5
  8. Research on Compensation of Hysteresis in Piezoceramic Actuators,TM282
  9. Research of Preparation of BT and NBT Oriented Piezoelectric Ceramics in a Magnetic Field,TM282
  10. Study on Low Temperature Sintered PSN-PZT Piezoelectric Ceramics,TM282
  11. Study on Preparation, Structure and Electric Properties of NBT-based Lead-free Piezoelectric Ceramics,TM282
  12. ( La , Nb) - doped TiO_2 varistor ceramic second - phase research,TM282
  13. Preparation and Properties of Li+ Doped KNN and Ba2+ Doped BNT Composite Ceramics,TM282
  14. The Research on PZN-PLZT Piezoelectric Ceramics with High Properties,TM282
  15. Research of Nonlinear Dynamic Characteristics and Control for Laminated Beam with Piezoelectric Ceramic,TM282
  16. Preparation and Characterization of the KNN-based Lead-free Piezoelectric Ceramics,TM282
  17. Study on Signal Adjustable Precision Driving Power of Piezoceramics,TM282
  18. Research on the Properties of the PZT Piezoelectric Ceramics Doped with Antimony and Lithium and the Optimization of Process,TM282
  19. The Study of Piezoelectric Properties on BaTiO3 Based Lead-free Piezoelectric Ceramics,TM282
  20. Research on Microstructure and Properties of ZnO Varistor Ceramics Induced by Laser Shock Processing,TM282
  21. Preparation, Enhancement and Toughening of PBSZT Piezoelectric Ceramics,TM282

CLC: > Industrial Technology > Electrotechnical > Electrical materials > Electric and ceramic materials > Piezoelectric ceramics
© 2012 www.DissertationTopic.Net  Mobile