An electrolyte sheet for solid oxide fuel cells includes a ceramic plate body containing a cubic zirconia sintered material, wherein, with the ceramic plate body being defined to have nine portions including an outer peripheral portion and a central portion, ceramic grains in each of the nine portions have a median size D.sub.50 of 1.0 μm to 4.0 μm, and a maximum median size D.sub.50 of the ceramic grains among the nine portions is 1.0 to 1.3 times a minimum median size D.sub.50 of the ceramic grains among the nine portions.

A method of manufacturing a multilayer ceramic capacitor includes printing an internal electrode pattern on a dielectric layer, forming a dielectric pattern in a region other than a region in which the internal electrode pattern is printed, laminating dielectric layers to form a multilayer body, exposing the internal electrode pattern and the dielectric pattern from a side surface of the multilayer body, removing at least a portion of the exposed dielectric pattern, and forming a dielectric gap layer on the side surface.

Disclosed is a lithium complex oxide sintered plate including a plurality of primary grains having a layered rock-salt structure, the primary grains being bonded. The lithium complex oxide has a composition represented by the formula: Li.sub.x(Co.sub.1-yM.sub.y)O.sub.2±δ (wherein, 1.0≤x≤1.1, 0<y≤0.1, 0≤δ<1, and M is at least one selected from the group consisting of Mg, Ni, Al, and Mn), and the primary grains have a mean tilt angle of more than 0° to 30° or less, the mean tilt angle being a mean value of the angles defined by the (003) planes of the primary grains and the plate face of the lithium complex oxide sintered plate.

A dielectric ceramic composition and a multilayer ceramic electronic component are provided, the dielectric ceramic composition includes a barium titanate base material main component and a subcomponent, a microstructure after sintering includes a first crystal grain including 3 or less domain boundaries and a second crystal grain including 4 or more domain boundaries, and an area ratio of the second crystal grain to the total crystal grains is 20% or less.

The invention relates to a process of producing a dental zirconia article, the process comprising the step of sintering a porous dental zirconia article, the sintering comprising a heat-treatment segment A characterized by a heating rate of at least 3 K/sec up to a temperature of at least 1,200° C., the porous dental zirconia article being composed of a zirconia material containing 6.0 to 8.0 wt. % yttria, 0.05 to 0.12 wt. % alumina and comprising a coloring component containing Tb, the porous dental zirconia article being essentially free of Fe components. The invention also relates to a process comprising the additional step of applying a glazing composition to the outer surface of the porous zirconia article before the heat-treatment or sintering is conducted.

There are provided a dielectric composition and a multilayer capacitor including the same. The dielectric composition contains: barium titanate (BaTiO.sub.3); and 0.6 to 0.9 mol of calcium (Ca) and 0.5 to 2.0 mol of magnesium (Mg) based on 100 mol of barium titanate.

A composite sintered material includes: cubic boron nitride grains; and hexagonal boron nitride grains or the hexagonal boron nitride grains and wurtzite type boron nitride grains, wherein a dislocation density of the cubic boron nitride grains is more than or equal to 1×10.sup.15/m.sup.2 and less than or equal to 1×10.sup.17/m.sup.2, a median diameter d50 of equivalent circle diameters of the cubic boron nitride grains is more than or equal to 10 nm and less than or equal to 500 nm, and a relationship of the following expression 1 is satisfied:
0.015≤(Vh+Vw)/(Vc+Vh+Vw)≤0.5,  Expression 1:
where Vc represents a volume-based content ratio of the cubic boron nitride grains, Vh represents a volume-based content ratio of the hexagonal boron nitride grains, and Vw represents a volume-based content ratio of the wurtzite type boron nitride grains.

An insert includes a cBN sintered compact including cBN particles and a binder phase binding the cBN particles. The cBN particles occupy 60% or more of the cross-sectional area of the cBN sintered compact. The binder phase contains Al compound particles containing at least one of AN or Al.sub.2O.sub.3. A particle distribution of the Al compound particles in a cumulative distribution based on the number of the Al compound particles in a cross section of the cBN sintered compact is as follows. The proportion of the Al compound particles with the particle diameter of 0.3 μm or larger is 5% or more, and the proportion of the Al compound particles with the particle diameter of 0.5 μm or larger is less than 5%.

A method of manufacturing a multilayer ceramic capacitor includes printing an internal electrode pattern on a dielectric layer, forming a dielectric pattern in a region other than a region in which the internal electrode pattern is printed, laminating dielectric layers to form a multilayer body, exposing the internal electrode pattern and the dielectric pattern from a side surface of the multilayer body, removing at least a portion of the exposed dielectric pattern, and forming a dielectric gap layer on the side surface.

The present invention provides a sintered body containing W and WC, having excellent hardness, strength, compactness, and corrosion resistance, without containing W.sub.2C, and capable of being used for the purpose of a cutting tool or a glass molding die, or a seal ring. There is provided a sintered body containing 4 to 50 vol % of tungsten metal as binder phases, 50 to 95 vol % of tungsten carbide (WC), and 0.5 to 5.0 vol % of tungsten oxide (WO.sub.2), in which the tungsten oxide (WO.sub.2) has an average grain size of 5 nm to 150 nm and is present in a sintered body structure at an average density of 5 to 20 particles/μm.sup.2.