采用传统固相反应法制备了K0.49NaxNbO2(x=0.51~0.54)系无铅压电陶瓷,系统研究了Na过量对K0.49NaxNbO3陶瓷结构与压电、铁电性能的影响.研究结果表明:在研究的Na过量范围内,陶瓷样品具有单一的正交钙钛矿型晶体结构,但在x=0.52~0.53处晶格常数出现不连续的变化过程,表明该体系存在由两个不同正交晶相构成的准同型相界(MPB),在MPB区域边界x=0.52处陶瓷具有优异的性能:西d33=142 Pc/N,Qm=146,εr=462,tanδ=0.026,kp=0.39.
参考文献
[1] | 贺连星,李毅,李广成,李承恩.无铅压电陶瓷材料研究进展[J].电子元件与材料,2004(11):52-55. |
[2] | Takenaka T;Huzumi A;Hata T et al.Mechanical properties of (BiNa)1/2 TiO3-based piezoelectric ceramics[J].Silicates Industries,1993,7(08):136-142. |
[3] | Li Y M;Chen W;Zhou J et al.Dielectric and piezoelectric properties of lead-free (Na0.5Bi0 5) TiO3-NaNbO3 ceramics[J].Materials Science and Engineering B:Solid-state materials for advanced technology,2004,112:5-9. |
[4] | Saito Y;Takao H;Tani T et al.Lead-frec pizoceramics[J].Nature,2004,432(7013):84-87. |
[5] | Yiping Guo;Ken-ichi Kakimoto;Hitoshi Ohsato .Dielectric and piezoelectric properties of lead-free (Na_(0.5)K_(0.5))NbO_3-SrTiO_3 ceramics[J].Solid State Communications,2004(5):279-284. |
[6] | Li Y M;Wang J S;Liao R H et al.Synthesis and piezoelectric properties of KxNa1-xNbO3 ceramic by molten salt method[J].Journal of Alloys and Compounds,2010,496(1-2):282-286. |
[7] | Egerton;Dillon D M .Piezoelectric and dielectric properties of ceramics in the system potassium-sodium niobate[J].Journal of the American Ceramic Society,1959,42(09):438. |
[8] | Dai Y J;Zhang X W;Chen K .Morpbotropic phase boundary and electrical properties of K1-xNaxNbO3 lead-free ceramics[J].Applied Physics Letters,2009,94:042905. |
[9] | Zuo R Z;Fu J;Lu D Y .Phase transformation and tunable piezoelectric preperties of lead-free (Na0.52K0.48-xLix) (Nb1-x-xSbxTax)O3 system[J].Journal of the American Ceramic Society,2009,92(01):283. |
[10] | Li Y M;Shen Z Y;Jiang L.Microsttructure,phase transitian,and electrical properties of KxNa1-xNbO3 lead-free piezoceramics[J].Materials Chemistry and Physics,2010 |
[11] | Zong-Yang Shen;Yuhua Zhen;Ke Wang .Influence of Sintering Temperature on Grain Growth and Phase Structure of Compositionally Optimized High-Performance Li/Ta-Modified (Na,K)NbO_3 Ceramics[J].Journal of the American Ceramic Society,2009(8):1748-1752. |
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