Investigations On The Preparation And Energy Storage Properties Of Low-temperature Sintered Zirconate Titanate Lead Based Ceramics

Integrated circuit technology and electronic components are used more and more widely in daily life.The large volume of traditional electronic components restricts its own application breadth.Therefore,miniaturization and lightweight are the development trend of electronic components.Since LTCC ceramics are easier to be incorporated with materials,demonstrating novel characteristics,they can be used in multi-layer electronic components and integrated circuits.However,there is a problem that the sintering temperature of piezoelectric ceramics is too high and cannot be co-fired with the electrodes in the multilayer component.Therefore,low-temperature sintering of ceramics has gradually become another focus of ceramics.Therefore,in this thesis,the low-temperature sintering and energy storage characterization of lanthanum zirconate titanate lead-based ceramics are carried out using a conventional solid-state reaction approach.The experimental works are summarized as follows:（1）First,the multiple oxides with a lower melting temperature are doped with lead lanthanum zirconate titanate to lower the sintering temperature,and then the properties of the sample sintered at low temperature are characterized.The PLZT ceramics were co-doped with lithium carbonate and bismuth oxide,and the sintering temperature was reduced to950℃.The results turn out that,the energy storage density was also improved.When the doping amount is 4wt%.The energy storage density reaches 1.07 J/cm^-3.（2）Secondly,the low-melting glass was prepared to be used for the experiment pursued in Chapter 4.The B₂O₃-Zn O-Li₂O ternary systemwas used,and the compositional ratio of 20～40:20～40:30～60 was slected,In addition,some alkali metal oxides were added to reduce the melting temperature.The final result shows that the melting temperature of BZL glass without added metal is about 830℃,which meets our expectations and is suitable for the low temperature sintering of lead lanthanum zirconate titanate.（3）Finally,the glass powder prepared in above（2）was used as a low-melting glass doped into lead ceramics of lanthanum zirconate titanate ceramics.In terms of the liquid phase formed during around the ceramic grains the sintering process,the PLZT ceramics were finally densified at 950℃.The energy storage density procured is 0.37 J/cm³ when the glass content is about 1 wt%.