采用传统固相烧结法制备0.92(Na0.51K0.49-xLix)NbO3-0.02K0.5Bi0.5TiO3-0.06BaZrO3(简写为NKLNx-KBT-BZ,x=0.00～0.05)系无铅压电陶瓷.用X射线衍射仪、扫描电子显微镜、精密阻抗分析仪及铁电性能测试仪等研究了Li+含量对该体系陶瓷的晶相、显微结构和电性能的影响.结果表明:在研究组成范围内,陶瓷均具有单一的钙钛矿结构,随着Li+含量的增加,晶体结构从菱方转变为四方结构,并且经过菱方-四方两相共存的准同型相界(MPB)组成区域0.01 ＜x ＜0.03.在MPB区域的四方相边界x=0.03处获得优异的电性能:d33=227 pC/N,kp=39.3％,Qm=69,εT33/ε0=1642,tanδ =2％,Pr=13.3μC/cm2,Ec=1.64 kV/mm.
参考文献
| [1] | Panda, PK .Review: environmental friendly lead-free piezoelectric materials[J].Journal of Materials Science,2009(19):5049-5062. |
| [2] | Chun-Ming Wang;Jin-Feng Wang .High performance Aurivillius phase sodium-potassium bismuth titanate lead-free piezoelectric ceramics with lithium and cerium modification[J].Applied physics letters,2006(20):202905-1-202905-3-0. |
| [3] | Zhi-Gang Gai;Jin-Feng Wang;Ming-Lei Zhao;Chun-Ming Wang;Guo-Zhong Zang;Bao-Quan Ming;Peng Qi;Shujun Zhang;Thomas R. Shrout .High temperature (NaBi)_(0.48)□_(0.04)Bi_2Nb_2O_9-based piezoelectric ceramics[J].Applied physics letters,2006(1):012907.1-012907.3. |
| [4] | Evelyn Hollenstein;Matthew Davis;Dragan Damjanovic;Nava Setter .Piezoelectric properties of Li- and Ta-modified (K_(0.5)Na_(0.5))NbO_3 ceramics[J].Applied physics letters,2005(18):182905.1-182905.3. |
| [5] | Zhang SJ;Xia R;Shrout TR;Zang GZ;Wang JF .Piezoelectric properties in perovskite 0.948(K0.5Na0.5)NbO3-0.052LiSbO(3) lead-free ceramics[J].Journal of Applied Physics,2006(10):4108-1-4108-6-0. |
| [6] | Jing-Feng Li;Ke Wang;Bo-Ping Zhang .Ferroelectric and Piezoelectric Properties of Fine-Grained Na_(0.5)K_(0.5)NbO_3 Lead-Free Piezoelectric Ceramics Prepared by Spark Plasma Sintering[J].Journal of the American Ceramic Society,2006(2):706-709. |
| [7] | 翟霞,王华,崔业让,袁昌来,许积文,张小文,周昌荣,江民红,刘心宇.CuO掺杂对KNN-LS-BF无铅压电陶瓷性能的影响[J].人工晶体学报,2012(04):967-972. |
| [8] | Yang ZP;Chang YF;Wei LL .Phase transitional behavior and electrical properties of lead-free (K0.44Na0.52Li0.04)(Nb0.96-xTaxSb0.04)O-3 piezoelectric ceramics[J].Applied physics letters,2007(4):42911-1-42911-3-0. |
| [9] | V. Bobnar;J. Bernard;M. Kosec .Relaxorlike dielectric properties and history-dependent effects in the lead-free K_(0.5)Na_(0.5)NbO_(3)-SrTiO_(3) ceramic system[J].Applied physics letters,2004(6):994-996. |
| [10] | Yiping Guo;Ken-ichi Kakimoto;Hitoshi Ohsato .Phase transitional behavior and piezoelectric properties of (Na_(0.5)K_(0.5))NbO_(3)-LiNbO_(3) ceramics[J].Applied physics letters,2004(18):4121-4123. |
| [11] | 刘虎,李月明,沈宗洋,王竹梅,李润润.织构化K0.5Na0.5NbO3无铅压电陶瓷的性能研究[J].人工晶体学报,2011(02):445-449. |
| [12] | 赁敦敏,肖定全,朱建国,余萍,鄢洪建.LiNbO3基无铅压电陶瓷的研究与进展[J].功能材料,2004(01):18-20. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%