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A platform for research: civil engineering, architecture and urbanism
PIEZOELECTRIC CERAMIC AND PIEZOELECTRIC ELEMENT
PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic capable of using a piezoelectric element at a high driving voltage without deteriorating piezoelectric characteristics and to provide a piezoelectric element using the same.SOLUTION: There is provided a composite oxide-type piezoelectric ceramic essentially consisting of lead zirconate titanate, which comprises crystal particles essentially consisting of lead zirconate titanate and hetero-phase particles essentially consisting of ZnO unevenly distributed between the crystal particles, wherein 0.1 wt.% or less (excluding 0) of Cr is contained in terms of Cr2O3 based on the total weight of the piezoelectric ceramic.SELECTED DRAWING: Figure 4
【課題】圧電特性を低下させることなく、高い駆動電圧で圧電素子を使用可能な圧電磁器およびこれを用いた圧電素子を提供することを目的とする。【解決手段】本発明の圧電磁器は、チタン酸ジルコン酸鉛を主成分とした複合酸化物型圧電磁器であって、チタン酸ジルコン酸鉛を主成分とする結晶粒子と、前記結晶粒子の間に偏在するＺｎＯを主成分とする異相粒子と、を備え、Ｃｒ（圧電磁器の全重量部に対し、Ｃｒ２Ｏ３に換算し、０．１重量％以下（０は除く））が含まれていることを特徴とする。【選択図】 図４
PIEZOELECTRIC CERAMIC AND PIEZOELECTRIC ELEMENT
PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic capable of using a piezoelectric element at a high driving voltage without deteriorating piezoelectric characteristics and to provide a piezoelectric element using the same.SOLUTION: There is provided a composite oxide-type piezoelectric ceramic essentially consisting of lead zirconate titanate, which comprises crystal particles essentially consisting of lead zirconate titanate and hetero-phase particles essentially consisting of ZnO unevenly distributed between the crystal particles, wherein 0.1 wt.% or less (excluding 0) of Cr is contained in terms of Cr2O3 based on the total weight of the piezoelectric ceramic.SELECTED DRAWING: Figure 4
【課題】圧電特性を低下させることなく、高い駆動電圧で圧電素子を使用可能な圧電磁器およびこれを用いた圧電素子を提供することを目的とする。【解決手段】本発明の圧電磁器は、チタン酸ジルコン酸鉛を主成分とした複合酸化物型圧電磁器であって、チタン酸ジルコン酸鉛を主成分とする結晶粒子と、前記結晶粒子の間に偏在するＺｎＯを主成分とする異相粒子と、を備え、Ｃｒ（圧電磁器の全重量部に対し、Ｃｒ２Ｏ３に換算し、０．１重量％以下（０は除く））が含まれていることを特徴とする。【選択図】 図４
PIEZOELECTRIC CERAMIC AND PIEZOELECTRIC ELEMENT
圧電磁器および圧電素子
SASAKI MASASHI (author)
2016-12-01
Patent
Electronic Resource
Japanese
| European Patent Office | 2017