设计了部分化学法制备ＰｂＮｂ(Ｚｒ,Ｓｎ;Ｔｉ)Ｏ３反铁电陶瓷粉体．前驱体在６００℃/２ｈ的预烧条件下形成钙钛矿晶相结构,经行星球磨后获得亚微米级粒度分布的粉体．采用流延法成型,在１１００℃/ｔｈ的烧结条件下获得了相对密度＞９７%,晶粒大小约为４μｍ的样品．在组成为Ｐｂ０．９９Ｎｂ０．２２[(Ｚｒ０．６Ｓｎ０．４)１－ｙＴｉｙ]０．９８Ｏ３的系列样品中,随Ｔｉ含量增加,样品出现从反铁电态向铁电态转变的趋势．在ｙ＝０．０６的配方中,在６ｋＶ/ｍｍ场强下测得了０．３３%的纵向应变．
A partial chemical method was developed for the synthesis of PbNb(Zr,Sn,Ti)O3 antiferroelectric ceramics. Single perovskite phase was formed in the precursor
calcined at 600℃ for 2h and a submicron particle size distribution of calcined powder was achieved by planetary ball milling. Average grain size about
4μm and relative density greater than 97% were obtained from samples prepared by a tape-casting method and sintered at 1100℃ for 4h. In samples with
composition of Pb0.99Nb0.02[(Zr0.6Sn0.4)1-yTiy]0.98O3, there shows a increase of dielectric constant and a trend of transition from antiferroelectric
state to ferroelectric state with the increase of Ti content. A strain curve with maximum longitude strain of 0.33% under 6kV/mm electric field was measured from
samples with composition of y=0.06.
参考文献
| [1] | |
| [2] | Berlincourt D. IEEE Trans. Sonic & |
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