A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ULTRASONIC VIBRATOR
To provide a piezoelectric ceramic capable of forming a piezoelectric element that is small in both mechanical loss and electrical loss during its drive.SOLUTION: A piezoelectric ceramic comprises, as a main component, a compound containing Pb, Zr, Ti, Zn, Nb, Mn and O as constituent elements and having a Perovskite-based structure, with the contained particles having an average particle diameter ravg of 4 μm, wherein, in X-ray diffraction measurements using Cu-K α-rays, a total ratio ((IZT+IZnO)/IP×100) of a maximum peak intensity IZT expressed at 34.0°≤2θ≤35.0° and a maximum peak intensity IZnO expressed at 35.5°≤2θ≤37.0° with respect to a maximum peak intensity IP expressed at 20.0°≤2θ≤40.0° is 1.0% or smaller.SELECTED DRAWING: Figure 1
【課題】駆動時の機械的な損失及び電気的な損失が共に小さい圧電素子得ることが可能な圧電セラミックスを提供する。【解決手段】構成元素としてＰｂ、Ｚｒ、Ｔｉ、Ｚｎ、Ｎｂ、Ｍｎ及びＯを含み、ペロブスカイト型構造を有する化合物を主成分とし、含有する粒子の平均粒径ｒａｖｇが４μｍ以下であり、かつＣｕ－Ｋα線を用いたＸ線回折測定において、２０．０°≦２θ≦４０．０°に現れる最大ピーク強度ＩＰに対する、３４．０°≦２θ≦３５．０°に現れる最大ピーク強度ＩＺＴと３５．５°≦２θ≦３７．０°に現れる最大ピーク強度ＩＺｎＯとの合計の割合（（ＩＺＴ＋ＩＺｎＯ）／ＩＰ×１００）が、１．０％以下となる圧電セラミックスとする。【選択図】図１
PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ULTRASONIC VIBRATOR
To provide a piezoelectric ceramic capable of forming a piezoelectric element that is small in both mechanical loss and electrical loss during its drive.SOLUTION: A piezoelectric ceramic comprises, as a main component, a compound containing Pb, Zr, Ti, Zn, Nb, Mn and O as constituent elements and having a Perovskite-based structure, with the contained particles having an average particle diameter ravg of 4 μm, wherein, in X-ray diffraction measurements using Cu-K α-rays, a total ratio ((IZT+IZnO)/IP×100) of a maximum peak intensity IZT expressed at 34.0°≤2θ≤35.0° and a maximum peak intensity IZnO expressed at 35.5°≤2θ≤37.0° with respect to a maximum peak intensity IP expressed at 20.0°≤2θ≤40.0° is 1.0% or smaller.SELECTED DRAWING: Figure 1
【課題】駆動時の機械的な損失及び電気的な損失が共に小さい圧電素子得ることが可能な圧電セラミックスを提供する。【解決手段】構成元素としてＰｂ、Ｚｒ、Ｔｉ、Ｚｎ、Ｎｂ、Ｍｎ及びＯを含み、ペロブスカイト型構造を有する化合物を主成分とし、含有する粒子の平均粒径ｒａｖｇが４μｍ以下であり、かつＣｕ－Ｋα線を用いたＸ線回折測定において、２０．０°≦２θ≦４０．０°に現れる最大ピーク強度ＩＰに対する、３４．０°≦２θ≦３５．０°に現れる最大ピーク強度ＩＺＴと３５．５°≦２θ≦３７．０°に現れる最大ピーク強度ＩＺｎＯとの合計の割合（（ＩＺＴ＋ＩＺｎＯ）／ＩＰ×１００）が、１．０％以下となる圧電セラミックスとする。【選択図】図１
PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ULTRASONIC VIBRATOR
圧電セラミックス、圧電素子及び超音波振動子
AIZAWA TOMOYA (author) / HARADA TOMOHIRO (author)
2022-07-25
Patent
Electronic Resource
Japanese
PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ULTRASONIC VIBRATOR
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PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ULTRASONIC VIBRATOR
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PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ULTRASONIC VIBRATOR
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