A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
DIELECTRIC CERAMIC COMPOSITION AND LAMINATED CERAMIC CAPACITOR
To provide a dielectric ceramic composition having good characteristics, especially good IR characteristics and high-temperature load life even under high electric field intensity.SOLUTION: There is provided a dielectric ceramic composition comprising a main component composed of a perovskite compound represented by the compositional formula (BaSrCa)(TiZr)O(wherein, all of the m, x, y and z represent a molar ratio and satisfy 0.9≤m≤1.1, 0≤x≤0.5, 0≤y≤0.3, 0≤(x+y)≤0.6 and 0.03≤z≤0.3) and a first sub-component composed of an oxide of a rare earth element R, wherein the dielectric ceramic composition comprises dielectric particles and a grain boundary, the dielectric particles contain all solid solution particles in which Zr is solid-solved in the entire dielectric particles and when the concentration of the Ti atom in the dielectric ceramic composition is defined as 100 atm%, the Zr concentration in the dielectric ceramic composition is defined as Za and when the concentration of the Ti atom in all solid solution particles is defined as 100 atm%, the average concentration of Zr in all solid solution particles is defined as Zb, the expression,0.7<(Zb/Za) is satisfied.SELECTED DRAWING: None
【課題】高い電界強度下においても良好な特性、特にＩＲ特性および高温負荷寿命の良好な誘電体磁器組成物を提供する。【解決手段】組成式（Ｂａ１−ｘ−ｙＳｒｘＣａｙ）ｍ（Ｔｉ１−ＺＺｒＺ）Ｏ３で表されるペロブスカイト型化合物（ただし、前記ｍ、ｘ、ｙ、ｚは全てモル比を示し、０．９≦ｍ≦１．１、０≦ｘ≦０．５、０≦ｙ≦０．３、０≦（ｘ＋ｙ）≦０．６、０．０３≦ｚ≦０．３を満たす）からなる主成分と、希土類元素Ｒの酸化物からなる第１副成分とを含み、誘電体磁器組成物は誘電体粒子と粒界とを含み、誘電体粒子はＺｒが誘電体粒子全体に固溶している全固溶粒子を含み、誘電体磁器組成物におけるＴｉ原子の濃度を１００原子％とした場合の、誘電体磁器組成物におけるＺｒ濃度をＺａとし、全固溶粒子におけるＴｉ原子の濃度を１００原子％とした場合の、全固溶粒子におけるＺｒの平均濃度をＺｂとした際に、０．７＜（Ｚｂ／Ｚａ）を満足する。【選択図】なし
DIELECTRIC CERAMIC COMPOSITION AND LAMINATED CERAMIC CAPACITOR
To provide a dielectric ceramic composition having good characteristics, especially good IR characteristics and high-temperature load life even under high electric field intensity.SOLUTION: There is provided a dielectric ceramic composition comprising a main component composed of a perovskite compound represented by the compositional formula (BaSrCa)(TiZr)O(wherein, all of the m, x, y and z represent a molar ratio and satisfy 0.9≤m≤1.1, 0≤x≤0.5, 0≤y≤0.3, 0≤(x+y)≤0.6 and 0.03≤z≤0.3) and a first sub-component composed of an oxide of a rare earth element R, wherein the dielectric ceramic composition comprises dielectric particles and a grain boundary, the dielectric particles contain all solid solution particles in which Zr is solid-solved in the entire dielectric particles and when the concentration of the Ti atom in the dielectric ceramic composition is defined as 100 atm%, the Zr concentration in the dielectric ceramic composition is defined as Za and when the concentration of the Ti atom in all solid solution particles is defined as 100 atm%, the average concentration of Zr in all solid solution particles is defined as Zb, the expression,0.7<(Zb/Za) is satisfied.SELECTED DRAWING: None
【課題】高い電界強度下においても良好な特性、特にＩＲ特性および高温負荷寿命の良好な誘電体磁器組成物を提供する。【解決手段】組成式（Ｂａ１−ｘ−ｙＳｒｘＣａｙ）ｍ（Ｔｉ１−ＺＺｒＺ）Ｏ３で表されるペロブスカイト型化合物（ただし、前記ｍ、ｘ、ｙ、ｚは全てモル比を示し、０．９≦ｍ≦１．１、０≦ｘ≦０．５、０≦ｙ≦０．３、０≦（ｘ＋ｙ）≦０．６、０．０３≦ｚ≦０．３を満たす）からなる主成分と、希土類元素Ｒの酸化物からなる第１副成分とを含み、誘電体磁器組成物は誘電体粒子と粒界とを含み、誘電体粒子はＺｒが誘電体粒子全体に固溶している全固溶粒子を含み、誘電体磁器組成物におけるＴｉ原子の濃度を１００原子％とした場合の、誘電体磁器組成物におけるＺｒ濃度をＺａとし、全固溶粒子におけるＴｉ原子の濃度を１００原子％とした場合の、全固溶粒子におけるＺｒの平均濃度をＺｂとした際に、０．７＜（Ｚｂ／Ｚａ）を満足する。【選択図】なし
DIELECTRIC CERAMIC COMPOSITION AND LAMINATED CERAMIC CAPACITOR
誘電体磁器組成物および積層セラミックコンデンサ
SAKURAI DAN (author) / KANEKO TOSHIHIKO (author) / MORIGASAKI NOBUTO (author) / TAKAHASHI TOSHINARI (author) / ITO YASUHIRO (author)
2019-08-08
Patent
Electronic Resource
Japanese
DIELECTRIC CERAMIC COMPOSITION AND LAMINATED CERAMIC CAPACITOR
| European Patent Office | 2019
DIELECTRIC CERAMIC COMPOSITION, CAPACITOR, AND MULTILAYER LAMINATED CERAMIC CAPACITOR
| European Patent Office | 2019