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A platform for research: civil engineering, architecture and urbanism
LEADLESS PIEZOELECTRIC CERAMIC COMPOSITION, PIEZOELECTRIC ELEMENT, AND DEVICE PROVIDED WITH PIEZOELECTRIC ELEMENT
To provide a leadless piezoelectric ceramic composition having good high temperature durability and high mechanical quality coefficient Qm.SOLUTION: A leadless piezoelectric ceramic composition includes a plurality of particles of alkali-niobate-based perovskite type oxide as a main component. As the particles include M1 elements of one or more elements selected from a group of Ba (barium), and Ca (calcium) and a part of particles are core-shell particles in a core-shell structure provided with a core part and a shell part, a percentage content of the M1 existing in the shell part of the core-shell particle is equal to of more than 1.5 times of that of the M1 existing in the core-part.SELECTED DRAWING: Figure 1
【課題】良好な高温耐久性と、高い機械的品質係数Ｑｍを有する無鉛圧電磁器組成物を提供することを目的とする。【解決手段】ニオブ酸アルカリ系のペロブスカイト型酸化物の複数の粒子を主成分として含有する無鉛圧電磁器組成物である。前記粒子には、Ｂａ（バリウム）、及びＣａ（カルシウム）からなる群より選ばれる１種以上の元素であるＭ１元素が含まれており、前記粒子の少なくとも一部は、コア部とシェル部とを備えたコアシェル構造のコアシェル粒子であり、前記コアシェル粒子において、前記シェル部に存在する前記Ｍ１元素の含有率が前記コア部に存在する前記Ｍ１元素の含有率の１．５倍以上である。【選択図】図１
LEADLESS PIEZOELECTRIC CERAMIC COMPOSITION, PIEZOELECTRIC ELEMENT, AND DEVICE PROVIDED WITH PIEZOELECTRIC ELEMENT
To provide a leadless piezoelectric ceramic composition having good high temperature durability and high mechanical quality coefficient Qm.SOLUTION: A leadless piezoelectric ceramic composition includes a plurality of particles of alkali-niobate-based perovskite type oxide as a main component. As the particles include M1 elements of one or more elements selected from a group of Ba (barium), and Ca (calcium) and a part of particles are core-shell particles in a core-shell structure provided with a core part and a shell part, a percentage content of the M1 existing in the shell part of the core-shell particle is equal to of more than 1.5 times of that of the M1 existing in the core-part.SELECTED DRAWING: Figure 1
【課題】良好な高温耐久性と、高い機械的品質係数Ｑｍを有する無鉛圧電磁器組成物を提供することを目的とする。【解決手段】ニオブ酸アルカリ系のペロブスカイト型酸化物の複数の粒子を主成分として含有する無鉛圧電磁器組成物である。前記粒子には、Ｂａ（バリウム）、及びＣａ（カルシウム）からなる群より選ばれる１種以上の元素であるＭ１元素が含まれており、前記粒子の少なくとも一部は、コア部とシェル部とを備えたコアシェル構造のコアシェル粒子であり、前記コアシェル粒子において、前記シェル部に存在する前記Ｍ１元素の含有率が前記コア部に存在する前記Ｍ１元素の含有率の１．５倍以上である。【選択図】図１
LEADLESS PIEZOELECTRIC CERAMIC COMPOSITION, PIEZOELECTRIC ELEMENT, AND DEVICE PROVIDED WITH PIEZOELECTRIC ELEMENT
無鉛圧電磁器組成物、圧電素子、及び圧電素子を備える装置
HIROSE YOSHIYUKI (author) / YAMADA TSUGUTO (author) / MARUYAMA KOJI (author) / KURAHASHI TOSHIAKI (author) / KITAMURA KAZUAKI (author) / KIMURA KENJI (author) / ICHIHASHI KENTARO (author) / KASASHIMA TAKASHI (author) / YAMAZAKI MASATO (author)
2024-05-21
Patent
Electronic Resource
Japanese
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