Nonlinear Behavior and High-Power Properties of (Bi,Na,Ba)TiO_3 and (Sr,Ca)_2NaNb_5O_<15> Piezoelectric Ceramics
Nonlinear Behavior and High-Power Properties of (Bi,Na,Ba)TiO_3 and (Sr,Ca)_2NaNb_5O_<15> Piezoelectric Ceramics
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(Bi,Na,Ba)TiO_3和(Sr,Ca)_2NaNb_5O_<15>压电陶瓷的非线性行为和高功率特性
DOI：
10.1143/jjap.50.09nd06
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Hideki Tamura
中科院分区：
文献类型：
--
作者：
Yutaka Doshida;Hiroyuki Shimizu;Youich Mizuno;Keita Itoh;Seiji Hirose;Hideki Tamura
采用连续驱动法对两种无铅压电陶瓷（Bi 1/2 Na 1/2） 0.85 Ba 0.15 Ti 0.98 Mn 0.02 O 3 （BNBTM）和Sr 1.9 Ca 0.1 NaNb 5 O 15 （SCNN）的力学特性进行了比较，阐明了它们的非线性行为和大功率性能。BNBTM陶瓷表现出与Pb (Zr, Ti) o3基（PZT）陶瓷相似的恒压驱动跳变现象。SCNN陶瓷的跳变现象与BNBTM陶瓷的跳变现象相反。它们的非线性行为分别由软弹簧效应和硬弹簧效应引起。在压电材料中，SCNN陶瓷具有显著的弹性性能。随着振动速度的增加，其温升低于PZT陶瓷；特别是SCNN陶瓷的温度低于BNBTM陶瓷的温度。BNBTM陶瓷的品质因子逐渐降低，SCNN陶瓷的品质因子呈宽峰状。因此，质量因子的退化受到限制，导致等效机械阻力逐渐增加。
The nonlinear behaviors and high-power properties of two lead-free piezoelectric ceramics–(Bi 1/2 Na 1/2) 0.85 Ba 0.15 Ti 0.98 Mn 0.02 O 3 (BNBTM) and Sr 1.9 Ca 0.1 NaNb 5 O 15 (SCNN)–were clarified by comparison of their mechanical characteristics using the continuous driving method. BNBTM ceramics exhibited jump phenomena with constant-voltage driving that were similar to those found in Pb (Zr, Ti) O 3-based (PZT) ceramics. The jump phenomena of SCNN ceramics produced mirror-reversed images relative to those of BNBTM ceramics. Their nonlinear behaviors were caused by the soft-spring effect and hard-spring effect, respectively. Among the piezoelectric materials, SCNN ceramics possess notable elastic properties. With increasing vibration velocity, their rise in temperature was lower than that of PZT ceramics; in particular, the temperature of SCNN ceramics was lower than that of BNBTM ceramics. The quality factor of BNBTM ceramics gradually decreased and that of SCNN ceramics showed a broad peak. The degradation of the quality factor was thus limited, resulting in a gradual increase in the equivalent mechanical resistance.