摘要:
PURPOSE: A non-reducible low temperature sintering dielectric ceramic composition for a multi layer ceramic capacitor is provided to prevent the reliability deterioration by the reduction of the dielectric thickness by the high capacity through mixing a main component with a secondary main component. CONSTITUTION: A non-reducible low temperature sintering dielectric ceramic composition for a multi layer ceramic capacitor (10) contains 91-98 wt% of first component and 2-9 wt% of second component. The first component contains 94-98 wt% of BaTiO3 which is a main component, 0.5-2 wt% of first secondary component, and 1-4 wt% of second secondary component. The first secondary component is glass powder having a network structure, and the second secondary component is formed of more than one compound selected from MgO, Cr2O3, or Mn3O4. The second secondary component is denoted by (Ba1-x-yCaySrx)(ZryTi1-y)O3, and x and y satisfy 0.2
摘要翻译:目的:提供一种用于多层陶瓷电容器的不可还原的低温烧结介电陶瓷组合物,以通过将主要组分与次要主要组分混合,通过高容量降低介电厚度来防止可靠性劣化。 构成:用于多层陶瓷电容器(10)的不可还原的低温烧结介电陶瓷组合物含有91-98重量%的第一组分和2-9重量%的第二组分。 第一组分含有94-98重量%的BaTiO 3,其为主要成分,0.5-2重量%的第一次要组分和1-4重量%的第二次要组分。 第一次要组分是具有网状结构的玻璃粉末,第二次要组分由多于一种选自MgO,Cr 2 O 3或Mn 3 O 4的化合物形成。 第二次要成分由(Ba1-x-yCaySrx)(ZryTi1-y)O3表示,x和y满足0.2 <= x <= 0.8且0.03 <= y <0.15。 BaTiO3的平均粒径大于第二次要成分。
摘要:
PURPOSE: A hexagonal barium titanate powder, a manufacturing method thereof, and a dielectric ceramic composition, and an electronic component are provided to improve relative dielectric constants and insulation resistance. CONSTITUTION: A hexagonal barium titanate powder has a maximum grain size of less than 1.0micro meter, a D90/D50 ratio of less than 3.0, and a hexagonalization rate of 50% or greater. The D90/D50 ratio indicates a ratio of 90% accumulated particle diameter to 50% accumulated particle diameter. The hexagonal barium titanate powder is marked as BaA(Ti1-αMα) BO3. M indicates a trivalent metallic ion which has an effective ionic radius of 0.58-0.64Å. A/B is 0.900-1.040, and alpha is 0.03-0.2. The dielectric ceramic composition has a sinter of the barium titanate powder as a main ingredient. A manufacturing method of the hexagonal barium titanate powder comprises the following steps: preparing compound powder including the barium carbonate powder having a specific surface area of 20m^2/g or more, titanium dioxide powder having a specific surface area of 30m^2/g, and powder containing the M element which has a specific surface area of 5.0m^2/g or more; and heat treating the compound powder at 900-1300deg.C. A representative example of an electronic component is a laminated ceramic condenser(1).
摘要:
PURPOSE: Oxygen donor particles and a method for manufacturing the same are provided to improve the reactivity of the oxygen donor particles by using magnesia and alumina as a support. CONSTITUTION: Oxygen donor particles include active materials containing metal oxide and a support. The support includes gamma alumina and magnesia. The oxygen donor particles are spherical. The average particle size of the oxygen donor particles is between 50 and 150um. The particle distribution of the oxygen donor particles is between 30 and 400um. The packing densities of the oxygen donor particles are between 1.0 and 3.0 g/ml. The specific surface areas of the oxygen donor particles are between 0.1 and 100m^2/g. The abrasion resistances of the oxygen donor particles are lower than or equal to 40%. The oxygen transferring ability of the oxygen donor particles is between 5 and 17wt%. The metal oxide is one or more selected from a group including nickel-based oxide and manganese-based oxide.
摘要:
PURPOSE: Hexagonal type barium titanate powder, a method for fabricating the same, a dielectric ceramic composition, and an electronic component are provided to improve the insulating resistance of the powder by including hexagonal barium titanate. CONSTITUTION: Hexagonal type barium titanate powder is represented by general formula, (Ba_1-αM_α)_A(Ti_1- β Mn_β )_BO_3. The crystalline structure of the powder is hexagonal shape. A, B, α, β satisfy the relationship, 0.900
摘要:
본 발명은 페라이트 자석분말, 및 그 제조방법에 관한 것이다. 본 발명에 의하면, Sr, Ba, Pb 또는 Ca의 일부를, Y를 포함하는 희토류원소와 Bi에서 선택되는 적어도 1종류임과 동시에 반드시 La를 포함하는 원소로 치환한, 육방정의 M형마그네트 플럼바이트 구조를 가지는 페라이트에 대하여, 미분쇄시에 Co, Ni, Mn, 및 Zn으로 되는 군에서 선택되는 적어도 1종의 원소를 첨가하고, 다시 가소 및/또는 소결하는 페라이트 자석이다. 이미 육방정의 M형 마그네트 플럼바이트 구조를 가지는 페라이트에 대하여, 미분쇄시 첨가하는 것으로, 적은 양의 Co, Ni, Mn, Zn 등의 원소의 첨가량으로 자기특성의 향상을 모도할 수 있게 된다.
摘要:
Disclosed is a low-loss ferrite characterized by mainly containing 47.1-49.3 mol% of Fe2O3, 20-26 mol% of ZnO, 6-14 mol% of CuO and the balance of NiO, while containing, per 100 mass% of the main components, 0.1-2 mass% of Sn in terms of SnO2 and 0.05-2 mass% of Mn in terms of Mn3O4. This low-loss ferrite is also characterized by having an average crystal grain size of 0.5-3 μm.
摘要翻译:公开了一种低损耗铁素体,其特征在于主要含有47.1-49.3摩尔%的Fe2O3,20-26摩尔%的ZnO,6-14摩尔%的CuO和余量的NiO,而每100重量%的主要含量 成分,以SnO 2为0.1〜2质量%的Sn,以Mn 3 O 4计,Mn为0.05〜2质量%。 该低损耗铁氧体的特征还在于平均晶粒尺寸为0.5-3μm。
摘要:
본 발명은, Mn산화물 또는 Mn 및 Co산화물을 첨가한 영구자석 및 그 제조방법에 관한 것이다. Sr, Ba, Pb 또는 Ca의 일부를, Y를 포함하는 희토류원소 및 Bi로 되는 군에서 선택되는 적어도 1종의 원소이고, 반드시 La를 포함하는 원소로 치환한 육방정의 M형 마그네트 플럼바이트 구조를 가지는 페라이트에 대하여, 미분쇄시 Mn의 산화물 또는 Mn 및 Co의 산화물을 첨가하고, 다시 가소 및/또는 소결한 페라이트 자석이다. 이미 육방정의 M형 마그네트 플럼바이트 구조를 구비하는 페라이트에 대하여, 미분쇄시 첨가하는 것으로, 적은 Mn 또는 Mn 및 Co원소의 첨가량으로, 자기특성의 향상을 도모할 수 있다.
摘要:
A dielectric ceramics and a multi layer ceramic capacitor are provided to allow a dielectric constant to be from 250 to 850 and a temperature property to satisfy X6S. A dielectric ceramics include a principal ingredient, expressed by ABO3+aRe+bM+Zr oxide, where, ABO3 is a barium titanate-based solid solution expressed by a general formula showing a perovskite structure, Re is at least one oxide of metal elements selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Td, Dy, Ho, Er, Tm, Yb, Lu, and Y, M is at least one oxide of metal elements selected from the group consisting of Mg, Al, Cr, Mn, Ni, Cu, and Zn, each of a and b notes a mol number of each of oxides converted into a chemical formula containing a metal element by one element based on 1 mol of ABO3 within a range of: 1,100
摘要翻译:提供介电陶瓷和多层陶瓷电容器,以使介电常数为250至850,并具有满足X6S的温度特性。 电介质陶瓷包括由ABO 3 + a RE + bM + Zr氧化物表示的主要成分,其中,ABO 3是由通式表示钙钛矿结构表示的钛酸钡基固溶体,Re是至少一种选择的金属元素的氧化物 从La,Ce,Pr,Nd,Sm,Eu,Gd,Td,Dy,Ho,Er,Tm,Yb,Lu和Y组成的组中,M是选自以下的金属元素的至少一种: 的Mg,Al,Cr,Mn,Ni,Cu和Zn中的每一个,其中a和b分别表示在一个范围内以1摩尔ABO 3换算为含有金属元素的化学式的每种氧化物的摩尔数 为:1,100 <= Ba / Ti <= 1,700,0.05 <= a <= 0.25,0.05 <= b <= 0.25,Zr氧化物在Ti:Zr = 95.5〜60:40的范围内。
摘要:
적층체(10)는, 제1 유전율을갖는제1 재료층(20)과, 제1 유전율보다낮은제2 유전율을갖는제2 재료층(30)을구비하고있다. 제1 재료층(20)은, BaTiO의일부에 Ba, Ti 이외의금속원소를포함하는화합물인제1 입자부(22)와, 제1 입자부(22)의입자사이에존재하며 ZnO를포함하는제1 입계부(粒界部; 24)를포함한다. 제2 재료층(30)은, 제2 입자부(32)와, 제2 입자부(32)의입자사이에존재하는제2 입계부(34)를포함한다.