Lead-free barium titanate ceramics with large piezoelectric constant fabricated by microwave sintering
Lead-free barium titanate ceramics with large piezoelectric constant fabricated by microwave sintering
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DOI：
10.1143/jjap.45.l30
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发表时间：
2006-01-01
期刊：
影响因子：
--
通讯作者：
Tsurekawa, S
中科院分区：
文献类型：
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作者：
Takahashi, H;Numamoto, Y;Tsurekawa, S
一种无铅钛酸钡（BaTiO 3）陶瓷，其具有高密度和大的压电常数d（33），使用通过水热合成制备的具有100 nm粒度的纯细粉末，通过微波烧结在1320 ℃下制备。晶粒尺寸为3.4 μ m的陶瓷的密度大于理论值的98.3%。极化后的陶瓷的介电常数为ε（T）（33）/ε（0）= 4200，机电耦合系数平面模式为k（P）= 36%，d（33）= 350 pC/N。d（33）值是无铅BaTiO_3陶瓷的最大值。
A lead-free barium titanate (BaTiO3) ceramics with a high density and a large piezoelectric constant, d(33), as manufactured at 1320 degrees C by microwave sintering, using a pure fine powder with a particle size of 100 nm produced by hydrothermal synthesis. The density of the ceramic with a 3.4 mu m grain size was more than 98.3% of the theoretical value. The ceramic after poling had a dielectric constant of epsilon(T)(33)/epsilon(0) = 4200, an electromechanical coupling factor planar mode of k(P) = 36% and d(33) = 350 pC/N. The value of d(33) is the largest one ever reported for lead-free BaTiO3 ceramics.