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公开(公告)号:US20110216471A1
公开(公告)日:2011-09-08
申请号:US13038541
申请日:2011-03-02
申请人: Megumi Fukuda , Takayuki Yao , Makoto Matsuda , Taisuke Kanzaki
发明人: Megumi Fukuda , Takayuki Yao , Makoto Matsuda , Taisuke Kanzaki
IPC分类号: H01G4/12 , C04B35/468
CPC分类号: C04B35/4682 , B82Y30/00 , C04B2235/3206 , C04B2235/3208 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3262 , C04B2235/3418 , C04B2235/652 , C04B2235/6584 , C04B2235/781 , C04B2235/79 , C04B2235/85 , H01G4/12 , H01G4/1227 , H01G4/30
摘要: A laminated ceramic capacitor which provides favorable life characteristics, even when a high electric field strength is applied while dielectric ceramic layers are reduced in layer thickness to less than 1 μm, contains a dielectric ceramic a compound represented by: (Ba1-x/100Cax/100)mTiO3 (0≦x≦20) as its main constituent, and as its accessory constituent, aMg-bSi-cMn-dR (R is at least one of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y, and a, b, c, and d (part by mol) respectively satisfy the conditions of 0.1
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公开(公告)号:US08404607B2
公开(公告)日:2013-03-26
申请号:US13038541
申请日:2011-03-02
申请人: Megumi Fukuda , Takayuki Yao , Makoto Matsuda , Taisuke Kanzaki
发明人: Megumi Fukuda , Takayuki Yao , Makoto Matsuda , Taisuke Kanzaki
IPC分类号: C04B35/468
CPC分类号: C04B35/4682 , B82Y30/00 , C04B2235/3206 , C04B2235/3208 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3262 , C04B2235/3418 , C04B2235/652 , C04B2235/6584 , C04B2235/781 , C04B2235/79 , C04B2235/85 , H01G4/12 , H01G4/1227 , H01G4/30
摘要: A laminated ceramic capacitor which provides favorable life characteristics, even when a high electric field strength is applied while dielectric ceramic layers are reduced in layer thickness to less than 1 μm, contains a dielectric ceramic a compound represented by: (Ba1-x/100Cax/100)mTiO3 (0≦x≦20) as its main constituent, and as its accessory constituent, aMg-bSi-cMn-dR (R is at least one of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y, and a, b, c, and d (part by mol) respectively satisfy the conditions of 0.1
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公开(公告)号:US20110019336A1
公开(公告)日:2011-01-27
申请号:US12820414
申请日:2010-06-22
申请人: Megumi FUKUDA , Takayuki Yao
发明人: Megumi FUKUDA , Takayuki Yao
IPC分类号: H01G4/06 , C04B35/468
CPC分类号: H01G4/1227 , C04B35/465 , C04B35/4682 , C04B35/6262 , C04B2235/3201 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3239 , C04B2235/3244 , C04B2235/3258 , C04B2235/3262 , C04B2235/3272 , C04B2235/3275 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3289 , C04B2235/3291 , C04B2235/3418 , C04B2235/6584 , C04B2235/72
摘要: A dielectric ceramic which is capable of achieving a laminated ceramic capacitor with high reliability, in particular, favorable lifetime characteristics in a load test, even when a dielectric ceramic layer is reduced in thickness contains one of (Ba, R)(Ti, Mn)O3 and (Ba, Ca, R)(Ti, Mn)O3 (R being La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and/or Y) as a main component, and M (M being Fe, Co, V, W, Cr, Mo, Cu, Al, and/or Mg) and Si as accessory components. The area of a region in which M is present is 10% or less on average of a cross section of each main component grain.
摘要翻译: 即使当电介质陶瓷层的厚度减小时,即使在(Ba,R)(Ti,Mn)中的任意一种时,也能够实现高可靠性,特别是负载试验时的寿命特性良好的层叠陶瓷电容器的电介质陶瓷, O 3和(Ba,Ca,R)(Ti,Mn)O 3(R为La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu和/或Y )作为主成分,M(M为Fe,Co,V,W,Cr,Mo,Cu,Al和/或Mg),Si为辅助成分。 其中M存在的区域的面积平均为每个主要组分颗粒的横截面的10%或更小。
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公开(公告)号:US08383536B2
公开(公告)日:2013-02-26
申请号:US12820414
申请日:2010-06-22
申请人: Megumi Fukuda , Takayuki Yao
发明人: Megumi Fukuda , Takayuki Yao
IPC分类号: C04B35/468 , H01G4/06
CPC分类号: H01G4/1227 , C04B35/465 , C04B35/4682 , C04B35/6262 , C04B2235/3201 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3239 , C04B2235/3244 , C04B2235/3258 , C04B2235/3262 , C04B2235/3272 , C04B2235/3275 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3289 , C04B2235/3291 , C04B2235/3418 , C04B2235/6584 , C04B2235/72
摘要: A dielectric ceramic which is capable of achieving a laminated ceramic capacitor with high reliability, in particular, favorable lifetime characteristics in a load test, even when a dielectric ceramic layer is reduced in thickness contains one of (Ba,R)(Ti,Mn)O3 and (Ba,Ca,R)(Ti,Mn)O3 (R being La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and/or Y) as a main component, and M (M being Fe, Co, V, W, Cr, Mo, Cu, Al, and/or Mg) and Si as accessory components. The area of a region in which M is present is 10% or less on average of a cross section of each main component grain.
摘要翻译: 即使当电介质陶瓷层的厚度减小时,即使在(Ba,R)(Ti,Mn)中的任意一种时,也能够实现高可靠性,特别是负载试验时的寿命特性良好的层叠陶瓷电容器的电介质陶瓷, O 3和(Ba,Ca,R)(Ti,Mn)O 3(R为La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu和/或Y )作为主成分,M(M为Fe,Co,V,W,Cr,Mo,Cu,Al和/或Mg),Si为辅助成分。 其中M存在的区域的面积平均为每个主要组分颗粒的横截面的10%或更小。
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公开(公告)号:US07911764B2
公开(公告)日:2011-03-22
申请号:US12723942
申请日:2010-03-15
CPC分类号: H01G4/1227 , C04B35/4682 , C04B35/49 , C04B35/6262 , C04B35/62665 , C04B35/62685 , C04B2235/3201 , C04B2235/3203 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3217 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3239 , C04B2235/3241 , C04B2235/3244 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3272 , C04B2235/3275 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3289 , C04B2235/3291 , C04B2235/3409 , C04B2235/3418 , C04B2235/656 , C04B2235/6582 , C04B2235/6584 , C04B2235/6588 , C04B2235/79 , H01B3/12 , H01G4/30
摘要: A dielectric ceramic contains a BaTiO3-based compound as a main ingredient, and can be represented by the general formula: 100AmBO3+aNiO+bROn+cMOv+dMgO+eXOw where R represents a rare earth element such as Dy, M represents a metal element such as Mn, and X represents a sintering aid component containing Si. Ni is uniformly solid-solved in crystal grains, and the solid-solution region of the rare earth element in the crystal grains is an average 10% or less in terms of a cross section ratio. 0.96≦m≦1.030, 0.05≦a≦3, 0.1≦b≦1.5, 0.1≦c≦1.0, 0.1≦d≦1.5, and 0.05≦e≦3.5 are satisfied. A laminated ceramic capacitor has dielectric layers formed of the dielectric ceramic. As a result, a dielectric ceramic, and a laminated ceramic capacitor having excellent AC voltage characteristics, capable of keeping desired dielectric characteristics and excellent temperature characteristics, and having excellent withstand voltage and capable of ensuring reliability can be realized.
摘要翻译: 电介质陶瓷含有以BaTiO3为基础的化合物作为主要成分,可以由以下通式表示:100AmBO3 + aNiO + bROn + cMOv + dMgO + eXOw其中R表示稀土元素如Dy,M表示金属元素 例如Mn,X表示含有Si的烧结助剂成分。 Ni均匀地固溶在晶粒中,并且晶粒中的稀土元素的固溶区域的横截面积的平均值为10%以下。 1.56和nlE; 1.09,0.05和nlE; 1.030,0.05& nlE; a≦̸ 3,0.1和nlE; b≦̸ 1.5,0.1和nlE; c≦̸ 1.0,0.1和nlE; d≦̸ 1.5和0.05& 层叠陶瓷电容器具有由电介质陶瓷形成的电介质层。 结果,可以实现能够保持期望的介电特性和优异的温度特性以及具有优异的耐受电压并且能够确保可靠性的具有优异的交流电压特性的电介质陶瓷和层压陶瓷电容器。
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公开(公告)号:US20100033895A1
公开(公告)日:2010-02-11
申请号:US12533489
申请日:2009-07-31
申请人: Takayuki Yao
发明人: Takayuki Yao
IPC分类号: H01G4/06
CPC分类号: H01G4/1227
摘要: A monolithic ceramic capacitor includes dielectric ceramic layers having a thickness of less than 1 μm. When this thickness is t and the crystal grains of a dielectric ceramic of the layers have a mean diameter of r, a mean number N of grain boundaries satisfies 0
摘要翻译: 单片陶瓷电容器包括厚度小于1um的电介质陶瓷层。 当该厚度为t且层的介电陶瓷的晶粒的平均直径为r时,晶界的平均数N满足0≤N≤2,其中N = t / r-1。 电介质陶瓷作为主要成分含有钙钛矿型化合物ABO3(其中A为Ba或Ba,Ca和Sr中的至少一种,B为Ti或Ti,以及Zr和Hf中的至少一种),并且还含有Mn 和V作为辅助部件。 在100摩尔份的主成分的基础上,Mn的含量为0.05〜0.75摩尔份数,V的含量为0.05〜0.75摩尔份,Mn和V的总含量为0.10〜0.80摩尔份。
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公开(公告)号:US08320103B2
公开(公告)日:2012-11-27
申请号:US12820309
申请日:2010-06-22
申请人: Takayuki Yao
发明人: Takayuki Yao
CPC分类号: C04B35/4682 , C04B35/6261 , C04B2235/3206 , C04B2235/3208 , C04B2235/3217 , C04B2235/3224 , C04B2235/3225 , C04B2235/3229 , C04B2235/3239 , C04B2235/3241 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3272 , C04B2235/3275 , C04B2235/3281 , C04B2235/3418 , C04B2235/6584 , C04B2235/72
摘要: A dielectric ceramic which is capable of achieving a laminated ceramic capacitor with high reliability, in particular, favorable lifetime characteristics in a load test, even when a dielectric ceramic layer is reduced in thickness, contains one of Ba(Ti, Mn)O3 and (Ba, Ca)(Ti, Mn)O3 as a main component, and R (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and/or Y), M (Fe, Co, V, W, Cr, Mo, Cu, Al, and/or Mg) and Si as accessory components. The area of a region in which at least one of R and M is present is 10% or less on average on a cross section of each main component grain.
摘要翻译: 即使在电介质陶瓷层的厚度变薄的情况下,也能够实现高可靠性,特别是负载试验时的寿命特性的层叠陶瓷电容器的电介质陶瓷,其含有Ba(Ti,Mn)O 3和( Ba,Ca)(Ti,Mn)O 3为主成分,R(La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu和/ ),M(Fe,Co,V,W,Cr,Mo,Cu,Al和/或Mg)和Si作为附加成分。 存在R和M中的至少一个的区域的面积在每个主要组分颗粒的横截面上平均为10%或更小。
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公开(公告)号:US20090310279A1
公开(公告)日:2009-12-17
申请号:US12548230
申请日:2009-08-26
IPC分类号: H01G4/06
CPC分类号: H01G4/1227 , C04B35/4682 , C04B35/6261 , C04B2235/3201 , C04B2235/3203 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3232 , C04B2235/3239 , C04B2235/3241 , C04B2235/3244 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3272 , C04B2235/3275 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3286 , C04B2235/3289 , C04B2235/3291 , C04B2235/3409 , C04B2235/3418 , C04B2235/5445 , C04B2235/5481 , C04B2235/6582 , C04B2235/6584 , C04B2235/6588 , C04B2235/79 , C04B2235/80 , H01B3/12 , H01G4/30 , Y10T29/435
摘要: A dielectric ceramic represented by a general formula: 100BamTiO3+aROn+bMOv+cXOw (where R represents a rare earth element, M represents a predetermined metal element, and n, v, and w represent independently a positive number determined in accordance with the valences of the elements R and M and a sintering aid component X, respectively), and the solid solution regions of the secondary components in the main phase grains are 10% or less (including 0%) on average in terms of a cross-sectional area ratio. The sintering aid component X contains at least Si, and m, a, b, and c satisfy 0.995≦m≦1.030, 0.1≦a≦2.0, 0.1≦b≦3.0, and 0.1≦c≦5.0. In a monolithic ceramic capacitor, dielectric layers are formed from the above-described dielectric ceramic. Consequently, a dielectric ceramic having a good AC voltage characteristic, maintaining a desired large dielectric constant and a good temperature characteristic, exhibiting a small dielectric loss, and being capable of ensuring the reliability and a monolithic ceramic capacitor including the dielectric ceramic are realized.
摘要翻译: 由通式:100BamTiO3 + aROn + bMOv + cXOw表示的介电陶瓷(其中R表示稀土元素,M表示预定的金属元素,n,v和w分别独立地表示根据化合价确定的正数) 的元素R和M以及烧结助剂组分X),主相晶粒中的次要组分的固溶区域的横截面积平均为10%以下(包括0%) 比。 烧结助剂组分X至少含有Si,m,a,b和c满足0.995 <= m <= 1.030,0.1 <= a <= 2.0,0.1 <= b <= 3.0,0.1 <= c < = 5.0。 在单片陶瓷电容器中,电介质层由上述介电陶瓷形成。 因此,实现了具有良好的交流电压特性,保持期望的大的介电常数和良好的温度特性,表现出小的介电损耗并且能够确保可靠性并且包括电介质陶瓷的单片陶瓷电容器的电介质陶瓷。
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公开(公告)号:US08488298B2
公开(公告)日:2013-07-16
申请号:US13048032
申请日:2011-03-15
申请人: Takayuki Yao
发明人: Takayuki Yao
CPC分类号: H01G4/1227 , C04B35/4682 , C04B35/62685 , C04B2235/3208 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3239 , C04B2235/3262 , C04B2235/3418 , H01G4/30
摘要: A dielectric ceramic capacitor that has excellent reliability and particularly excellent life characteristics in a load test even when the thickness of a dielectric ceramic layer is reduced uses a dielectric ceramic as a dielectric ceramic layer in a laminated ceramic capacitor which is a substance containing, as the main component, (Ba, R)(Ti, V)O3 or (Ba, Ca, R)(Ti, V)O3 in which R is at least one selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y, and in which both V and R are present uniformly in the main component particles.
摘要翻译: 即使当电介质陶瓷层的厚度减小时,在负载试验中也具有优异的可靠性和特别优异的寿命特性的电介质陶瓷电容器使用介电陶瓷作为电介质陶瓷层,该陶瓷电容器是作为 主要成分(Ba,R)(Ti,V)O 3或(Ba,Ca,R)(Ti,V)O 3,其中R为选自La,Ce,Pr,Nd,Sm,Eu,Gd ,Tb,Dy,Ho,Er,Tm,Yb,Lu和Y,并且其中V和R都均匀地存在于主要成分颗粒中。
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公开(公告)号:US08179662B2
公开(公告)日:2012-05-15
申请号:US12533489
申请日:2009-07-31
申请人: Takayuki Yao
发明人: Takayuki Yao
IPC分类号: H01G4/06
CPC分类号: H01G4/1227
摘要: A monolithic ceramic capacitor includes dielectric ceramic layers having a thickness of less than 1 μm. When this thickness is t and the crystal grains of a dielectric ceramic of the layers have a mean diameter of r, a mean number N of grain boundaries satisfies 0
摘要翻译: 单片陶瓷电容器包括厚度小于1μm的电介质陶瓷层。 当该厚度为t且层的电介质陶瓷的晶粒的平均直径为r时,晶界的平均数N满足0
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