Influence of CuO additive on physical properties of BaTiO3 ceramics
Various ceramics were prepared by the conventional solid-state reaction technique according to the compositional formula of (1-x) BaTiO3 + x CuO with x = 0.00 ~ 0.05. The influence of CuO additive on microstructure, crystalline structure and dielectric and piezoelectric properties were investigated. It has been found that CuO acts like a sintering aid in the CuO-modified BaTiO3 ceramics to promote the ceramic densification and suppress the abnormal grain growth during sintering process, and decreases the orthorhombic-tetragonal phase transition temperature. The CuO-modified BaTiO3 ceramics show desirable microstructures with high density, small average grain size and uniform grain size distribution. For the one with x = 0.01, it has the good piezoelectric properties of d33 = 300 pC/N, kp = 0.49, k33 = 0.62 and Qm = 425 at room temperature, and exhibits a ε peak at -5℃ and a d33 maximum of 353 pC/N at 0℃, respectively.
Lead-free piezoelectric materials BaTiO3 ceramics CuO-modified
Zong Zhang Jialiang Zhang Shoufu Shao Peng Zheng Chunlei Wang
School of Physics, Shandong University, Jinan 250100, China School of Physics, Shandong University, Jinan 250100, China State Key Laboratory of Crystal Material
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
287-291
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）