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1.
公开(公告)号:US20160264474A1
公开(公告)日:2016-09-15
申请号:US15064436
申请日:2016-03-08
Applicant: TDK CORPORATION
Inventor: Toshihiko KANEKO , Tatsuya FUJINO , Takeru YOSHIDA , Haruki EBINA , Nobuto MORIGASAKI
IPC: C04B35/468 , H01G4/12
CPC classification number: C04B35/4682 , C04B35/465 , C04B35/47 , C04B35/488 , C04B35/49 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3224 , C04B2235/3225 , C04B2235/3236 , C04B2235/3239 , C04B2235/3248 , C04B2235/3249 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3418 , C04B2235/5454 , C04B2235/6025 , C04B2235/6562 , C04B2235/6565 , C04B2235/6567 , C04B2235/6584 , C04B2235/6588 , C04B2235/768 , C04B2235/79 , C04B2237/68 , H01G4/1209 , H01G4/1227 , H01G4/1236 , H01G4/1245 , H01G4/30
Abstract: A dielectric ceramic composition and a ceramic electric device having a dielectric layer composed of the dielectric ceramic composition including a main component having a perovskite crystal structure expressed by general formula ABO3, an oxide of Eu, an oxide of Ra (Sc, Er, Tm, Yb and Lu), an oxide of Rb (Y, Dy, Ho, Tb and Gd) and an oxide of Si, in which 0.075≦α≦0.5, 0.5≦β≦3, 1.0≦γ≦4, 1.5≦δ≦5, and 0.030≦α/δ≦0.250 where a content of an oxide of Eu is α mole, a content of the oxide of Ra is β mole, a content of the oxide of Rb is γ mole, and a content of the second sub-component is δ mole with respect to 100 moles of the main component.
Abstract translation: 一种电介质陶瓷组合物和陶瓷电气装置,具有由介电陶瓷组合物构成的电介质层,该电介质陶瓷组合物包括具有由通式ABO 3表示的钙钛矿晶体结构的主要成分,Eu的氧化物,Ra(Sc,Er,Tm, Yb和Lu),Rb(Y,Dy,Ho,Tb和Gd)的氧化物和Si的氧化物,其中0.075≤α≤0.5,0.5≤β≤3,1.0≤γ≤4,1.5≤δ≤ 5和0.030≤α/δ≤0.250其中Eu的氧化物的含量为α摩尔,Ra的氧化物的含量为β摩尔,Rb的氧化物的含量为γ摩尔,第二 亚成分相对于100摩尔的主成分为δ摩尔。
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2.
公开(公告)号:US20160268045A1
公开(公告)日:2016-09-15
申请号:US15064431
申请日:2016-03-08
Applicant: TDK CORPORATION
Inventor: Toshihiko KANEKO , Tatsuya FUJINO , Nobuto MORIGASAKI , Yasuhiro ITO
IPC: H01G4/12 , C04B35/468
CPC classification number: H01G4/1227 , C04B35/4682 , C04B35/488 , C04B35/49 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3224 , C04B2235/3225 , C04B2235/3236 , C04B2235/3239 , C04B2235/3249 , C04B2235/3262 , C04B2235/3418 , C04B2235/5454 , C04B2235/6025 , C04B2235/6562 , C04B2235/6565 , C04B2235/6567 , C04B2235/6584 , C04B2235/6588 , C04B2235/768 , C04B2235/79 , C04B2235/80 , C04B2237/346 , C04B2237/68 , H01G4/30
Abstract: A dielectric ceramic composition including a main component having a perovskite crystal structure expressed by general formula ABO3, a first sub-component of an oxide of a rare earth element, and a second sub-component of an oxide of Si, and at least dielectric particles having a core-shell structure and segregated particles, in which a concentration of the rare earth element in the segregated particles is two or more times an average concentration of the rare earth element in a shell portion of the dielectric particles having the core-shell structure, and an area of the region occupied by the segregated particles is 5.0% or less and an average of cross-sectional areas of the respective segregated particles is 0.075 μm2 or less in a cross-section obtained by cutting the dielectric ceramic composition.
Abstract translation: 一种电介质陶瓷组合物,其包含具有由通式ABO 3表示的钙钛矿晶体结构的主要成分,稀土元素的氧化物的第一亚成分和Si的氧化物的第二子成分,至少介电粒子 具有核 - 壳结构和偏析粒子,其中分离粒子中的稀土元素的浓度是具有核 - 壳结构的电介质粒子的壳部中的稀土元素的平均浓度的两倍或更多倍 ,并且由偏析粒子占据的区域的面积为5.0%以下,在通过切断电介质陶瓷组合物而得到的截面中,各偏析粒子的截面积的平均值为0.075μm2以下。
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