摘要:
A production method of a dielectric ceramic composition comprising a main component including barium titanate expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.990
摘要:
A production method of a dielectric ceramic composition comprising a main component including barium titanate expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.990
摘要:
A production method of a dielectric ceramic composition comprising a main component including barium titanate expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.990
摘要:
Dielectric particles including a main component including barium titanate and R oxide (where R is at least one element selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu), wherein when defining the size of the dielectric particles as “D” and defining the region of a depth from the particle surface of 0% to 10% of said D as a surface region, a region of a depth from the particle surface of more than 10% to less than 40% of the D as an intermediate region, and a region of a depth from the particle surface of 40% to 50% of the D as a center region, in the surface region, the ratio of content of the R oxide decreases from the surface side toward the center of the dielectric particles and in the center region, the ratio of content of the R oxide increases from the surface side toward the center of the dielectric particles.
摘要:
A production method of a dielectric ceramic composition using a reacted material obtained by making a main component including barium titanate react with a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu). According to the invention, a dielectric ceramic composition capable of improving the specific permittivity without deteriorating other electric characteristics (for example, a temperature characteristic of the capacitance, insulation resistance, accelerated lifetime of the insulation resistance and dielectric loss), and the production method can be provided.
摘要:
A production method of a dielectric ceramic composition using a reacted material obtained by making a main component including barium titanate react with a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu). According to the invention, a dielectric ceramic composition capable of improving the specific permittivity without deteriorating other electric characteristics (for example, a temperature characteristic of the capacitance, insulation resistance, accelerated lifetime of the insulation resistance and dielectric loss), and the production method can be provided.
摘要:
A production method of a dielectric ceramic composition comprising a main component including a compound having a perovskite-type crystal structure expressed by a composition formula (Ba1-xCax) (Ti1-yZry)O3 (note that 0≦x≦0.2, 0≦y≦0.2), and a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu); comprising steps of obtaining a post-reaction material by bringing a material of the main component to react in advance with a part of a material of the fourth subcomponent to be included in the dielectric ceramic composition, and adding rest of material of the fourth subcomponent to be included in the dielectric ceramic composition into the post-reaction material. According to the present invention, both of a dielectric ceramic composition capable of improving the specific permittivity and a temperature characteristic of capacitance can be preferable, and the production method can be provided.
摘要:
A production method of a dielectric ceramic composition, comprising a main component comprised of barium titanate, a fourth subcomponent comprised of an oxide of R1 (note that R1 is at least one kind selected from a first element group composed of rare earth elements having a value of effective ionic radius for coordination number 9 of less than 108 pm) and a fifth sub component comprised of an oxide of R2 (note that R2 is at least one kind selected from a second element group composed of rare earth elements having a value of effective ionic radius for coordination number 9 of 108 pm to 113 pm); comprising the steps of obtaining a post-reaction material by bringing the main component material reacting with a part of the fourth subcomponent material and/or a part of the fifth subcomponent material, and adding remaining materials of the fourth subcomponent and the fifth subcomponent to be included in the dielectric ceramic composition to the post-reaction material; wherein a ratio M1/M2 of the number of moles M1 of R1 of the fourth subcomponent and the number of moles M2 of R2 of the fifth subcomponent in the finally obtained dielectric ceramic composition satisfies 4
摘要:
A production method of a dielectric ceramic composition, comprising a main component comprised of barium titanate, a fourth subcomponent comprised of an oxide of R1 (note that R1 is at least one kind selected from a first element group composed of rare earth elements having a value of effective ionic radius for coordination number 9 of less than 108 pm) and a fifth sub component comprised of an oxide of R2 (note that R2 is at least one kind selected from a second element group composed of rare earth elements having a value of effective ionic radius for coordination number 9 of 108 pm to 113 pm); comprising the steps of obtaining a post-reaction material by bringing the main component material reacting with a part of the fourth subcomponent material and/or a part of the fifth subcomponent material, and adding remaining materials of the fourth subcomponent and the fifth subcomponent to be included in the dielectric ceramic composition to the post-reaction material; wherein a ratio M1/M2 of the number of moles M1 of R1 of the fourth subcomponent and the number of moles M2 of R2 of the fifth subcomponent in the finally obtained dielectric ceramic can be balanced even when the dielectric layers are made thin.
摘要:
A production method of a dielectric ceramic composition comprising a main component including a compound having a perovskite-type crystal structure expressed by a general formula ABO3 (note that “A” is Ba alone or a composite of Ba and Ca, and “B” is Ti alone or a composite of Ti and Zr), and a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb and Lu); comprising steps of dividing a material of the main component to a first main component material and a second main component material, obtaining a post-reaction material by bringing the material of the first main component to react in advance with a part of the fourth subcomponent material to be included in the dielectric ceramic composition, and adding the material of the second main component and rest of the fourth subcomponent material to be included in the dielectric ceramic composition into the post-reaction material; wherein, when assuming that number of moles of the first main component is n1 mole and number of moles of the second main component is n2, a ratio of the first main component to total number of moles of the first main component and the second main component is 0.5≦n1/(n1+n2)≦1: by which preferable permittivity and a capacity-temperature characteristic can be obtained even when dielectric layers are made thin.
摘要翻译:一种电介质陶瓷组合物的制造方法,其特征在于,包括具有由通式ABO 3表示的具有钙钛矿型晶体结构的化合物的主成分(注意“A”为单独的Ba或Ba 和Ca,“B”是单独的Ti或Ti和Zr的复合物)和包含R的氧化物的第四副成分(注意,R是选自Y,La,Ce,Pr,Nd,Pm, Sm,Eu,Gd,Th,Dy,Ho,Er,Tm,Yb和Lu); 包括以下步骤:将主要组分的材料分成第一主要组分材料和第二主要组分材料,通过使第一主要组分的材料预先与第四副组分材料的一部分反应获得反应后材料 包括在电介质陶瓷组合物中,并将要包含在电介质陶瓷组合物中的第二主要组分和第四副组分材料的剩余部分添加到后反应材料中; 其中,当所述第一主成分的摩尔数为n 1摩尔,所述第二主成分的摩尔数为n 2时,所述第一主成分与所述第一主成分的总摩尔数的比率 主要成分为0.5 <= n 1 /(n 1 + n 2)<= 1:即使当电介质层变薄时,也可以获得优选的介电常数和容量温度特性。