(1-x)(K0.5Na0.5)NbO3-xBa0.985La0.01TiO3无铅陶瓷的微观结构及电性能研究.pdfVIP

Material Sciences 材料科学, 2017, 7(1), 39-47 Published Online January 2017 in Hans. /journal/ms /10.12677/ms.2017.71006 Microstructure and Electrical Properties of (1?x)(K Na )NbO -xBa La TiO 0.5 0.5 3 0.985 0.01 3 Lead-Free Ceramics 1,2* 1 1 1 1 Hualei Cheng , Jian Xiao , Peng Gao , Yunyun Yan , Shuanping Gao 1 Shaanxi Key Laboratory of Phytochemistry, Department of Chemistry, Baoji University of Arts and Science, Baoji Shaanxi 2 State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an Shaanxi th th th Received: Dec. 20 , 2016; accepted: Jan. 6 , 2017; published: Jan. 9 , 2017 Copyright ? 2017 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Open Access Abstract The (1?x)(K Na )NbO -xBa La TiO (KNN-xBLT, x = 0.01, 0.02, 0.04, 0.05) lead-free ceram- 0.5 0.5 3 0.985 0.01 3 ics were prepared by the conventional solid-state sintering method. It was found that the phase structure of KNN-xBLT ceramics changed from the orthorhombic phase to the tetragonal phase with the increase of BLT content. When x = 0.04, the phase structure of KNN-xBLT ceramics was orthorhombic and tetragonal phase coexisting. The density increased and the grain size decreased with BLT increased. The dielectric constant of the KNN-xBLT cer