A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CRYSTAL-ORIENTED PIEZOELECTRIC CERAMIC AND METHOD FOR MANUFACTURING THE SAME
PROBLEM TO BE SOLVED: To provide: a crystal-oriented piezoelectric ceramic arranged by use of a non-lead niobate alkali compound having a piezoelectric constant d33 comparable to that of a lead-containing material; and a method for manufacturing such a crystal-oriented piezoelectric ceramic.SOLUTION: A method for manufacturing a crystal-oriented piezoelectric ceramic comprises the steps of: preparing molding powder of a composition satisfying the general formula 1, i.e. (1-s)A1B1O-sM1M2O(where A1 represents an alkali metal, B1 represents at least one element of transition metal elements and includes Nb, M1 represents a divalent element, M2 represents a quadrivalent element, 1.02<α1≤1.10, and 0.05<1, and α2≤α1-0.045) is obtained.
【課題】鉛含有の材料と同等の圧電定数ｄ３３を持つ非鉛のニオブ酸アルカリ化合物を用いた結晶配向圧電セラミックス及びその製造方法を提供する。【解決手段】一般式１：(１−ｓ)Ａ１α１Ｂ１Ｏ３−ｓＭ１Ｍ２Ｏ３（Ａ１はアルカリ金属、Ｂ１は遷移金属元素の少なくとも一種の元素であってＮｂを含み、Ｍ１は２価の元素、Ｍ２は４価の元素であり、１．０２＜α１≦１．１０、０．０５＜ｓ≦０．１５）を満たす組成の成形粉に調整する工程と、配向性成形体を得る工程と、酸素分圧が１?１０−４ｋＰａ以下の雰囲気下で焼成する工程を有し、かつ、焼成工程においてＡ１を揮発させ、一般式２：(１−ｓ)Ａ１α２Ｂ１Ｏ３−ｓＭ１Ｍ２Ｏ３（但し、０．９４≦α２＜１で、かつα２≦α１—０．０４５）で表される組成の焼成体を得る。【選択図】図１
CRYSTAL-ORIENTED PIEZOELECTRIC CERAMIC AND METHOD FOR MANUFACTURING THE SAME
PROBLEM TO BE SOLVED: To provide: a crystal-oriented piezoelectric ceramic arranged by use of a non-lead niobate alkali compound having a piezoelectric constant d33 comparable to that of a lead-containing material; and a method for manufacturing such a crystal-oriented piezoelectric ceramic.SOLUTION: A method for manufacturing a crystal-oriented piezoelectric ceramic comprises the steps of: preparing molding powder of a composition satisfying the general formula 1, i.e. (1-s)A1B1O-sM1M2O(where A1 represents an alkali metal, B1 represents at least one element of transition metal elements and includes Nb, M1 represents a divalent element, M2 represents a quadrivalent element, 1.02<α1≤1.10, and 0.05<1, and α2≤α1-0.045) is obtained.
【課題】鉛含有の材料と同等の圧電定数ｄ３３を持つ非鉛のニオブ酸アルカリ化合物を用いた結晶配向圧電セラミックス及びその製造方法を提供する。【解決手段】一般式１：(１−ｓ)Ａ１α１Ｂ１Ｏ３−ｓＭ１Ｍ２Ｏ３（Ａ１はアルカリ金属、Ｂ１は遷移金属元素の少なくとも一種の元素であってＮｂを含み、Ｍ１は２価の元素、Ｍ２は４価の元素であり、１．０２＜α１≦１．１０、０．０５＜ｓ≦０．１５）を満たす組成の成形粉に調整する工程と、配向性成形体を得る工程と、酸素分圧が１?１０−４ｋＰａ以下の雰囲気下で焼成する工程を有し、かつ、焼成工程においてＡ１を揮発させ、一般式２：(１−ｓ)Ａ１α２Ｂ１Ｏ３−ｓＭ１Ｍ２Ｏ３（但し、０．９４≦α２＜１で、かつα２≦α１—０．０４５）で表される組成の焼成体を得る。【選択図】図１
CRYSTAL-ORIENTED PIEZOELECTRIC CERAMIC AND METHOD FOR MANUFACTURING THE SAME
結晶配向圧電セラミックス及びその製造方法
TANAKA KENYA (author) / YAMADA KOJI (author)
2015-12-10
Patent
Electronic Resource
Japanese
| European Patent Office | 2016
| European Patent Office | 2016
| European Patent Office | 2016
PIEZOELECTRIC ORIENTED CERAMIC AND METHOD FOR MANUFACTURING SAME
| European Patent Office | 2016
| European Patent Office | 2015