A composite material manufacturing method includes: laminating a first sheet (210) including a first slurry (214) and a third sheet (230) including a third slurry (234); and heating the first sheet (210) and the third sheet (230) that are laminated to a temperature of transforming to ceramics by pyrolysis to form an intermediate body (300). The manufacturing method further includes impregnating the intermediate body (300) with a slurry and heating at a temperature lower than a temperature of transforming to ceramics by pyrolysis.

A process for the production of a dental shaped body, such as a dental blank or a dental restoration, in which a suspension of a zirconium oxide starting material is gelled by means of a gelling agent, and the use of a suspension of a zirconium oxide starting material as dental material, the suspension containing a gelling agent.

A toughened ceramic component having a residual compressive stress and methods of forming the toughened ceramic component is disclosed. The ceramic component may include an internal portion having a first coefficient of thermal expansion (CTE) and an external portion substantially surrounding the internal portion and forming an exterior surface of the ceramic component. The external portion may have a second CTE that is less than the first CTE. Additionally, the external portion may be in compressive stress.

A dental zirconia system to produce translucent zirconia sintered bodies comprises at least two separate zirconia green bodies. At least one zirconia green body comprises zirconium oxide and a lower content of at least one other oxide summing to between 6.5 wt % to 20 wt % based on a total weight percent of the zirconia green body. At least another zirconia green body comprises zirconium oxide and a higher content of at least one other oxide summing to between 7.5 wt % to 20 wt % based on a total weight percent of the zirconia green body. The at least two zirconia green bodies each have at least some particles with a diameter of 100 nanometers to 1000 nanometers. The at least two zirconia green bodies have different amounts of the at least one other oxide with respect to one another.

A substrate includes a ceramic sintered body, a first circuit plate and a second circuit plate. The ceramic sintered body contains Al, Zr, Y and Mg. In the ceramic sintered body, the Mg content in terms of MgO is S1 mass % and the Zr content in terms of ZrO.sub.2 is S2 mass %, a following formula (1) is established. When a thickness of the first circuit plate is T1 mm, a thickness of the second circuit plate is T2 mm, and a thickness of the ceramic sintered body is T3 mm, following formulas (2), (3), and (4) are established. Formula (1): −0.004×S2+0.171<S1<−0.032×S2+1.427; Formula (2): 1.7<(T1+T2)/T3<3.5; Formula (3): T1≥T2; and Formula (4): T3≥0.25.

A ceramic electronic component includes a multilayer structure including dielectric layers and internal electrode layers, the internal electrode layers being alternately exposed to two edge faces of the multilayer chip opposite to each other. A rare earth element of a side margin has an ionic radius smaller than that of a rare earth element of a capacity section. The rare earth element of the side margin is a rare earth element when only the rare earth element is added to the side margin, or a rare earth element with a largest amount when rare earth elements are added to the side margin. The rare earth element of the capacity section is a rare earth element when only the rare earth element is added to the capacity section, or a rare earth element with a largest amount when rare earth elements are added to the capacity section.

In a multilayer ceramic capacitor, an intersection of an interface is defined by a second dielectric ceramic layer, a first internal electrode layer or a second internal electrode layer, and a third dielectric ceramic layer, on a plane including a length direction and a width direction, the second dielectric ceramic layer and the third dielectric ceramic layer include a near intersection region at or near the intersection, and an average particle size of dielectric particles in the near intersection region is smaller than average particle sizes of dielectric particles in the first dielectric ceramic layer, the second dielectric ceramic layer, and the third dielectric ceramic layer.

Polycrystalline diamond may include a working surface and a peripheral surface extending around an outer periphery of the working surface. The polycrystalline diamond includes a first volume including an interstitial material and a second volume having a leached region that includes boron and titanium. A method of fabricating a polycrystalline diamond element may include positioning a first volume of diamond particles adjacent to a substrate, the first volume of diamond particles including a material that includes a group 13 element, and positioning a second volume of diamond particles adjacent to the first volume of diamond particles such that the first volume of diamond particles is disposed between the second volume of diamond particles and the substrate, the second volume of diamond particles having a lower concentration of material including the group 13 element than the first volume of diamond particles.

The present invention provides a zirconia pre-sintered body that develops the preferable shade with a short firing time. The present invention relates to a zirconia pre-sintered body comprising zirconia that comprises predominantly monoclinic, and a stabilizer capable of inhibiting a phase transformation of zirconia, the zirconia pre-sintered body satisfying the following conditions: L1, a1, b1, L2, a2, and b2 are confined within predetermined ranges, L1>L2, a1<a2, and b1<b2,
where (L1,a1,b1) represent values of (L*,a*,b*) of the L*a*b* color system after sintering as measured at a first point falling within an interval of a length from one end of the zirconia pre-sintered body to 25% of the entire length of a straight line extending along a first direction from one end to the other end of the zirconia pre-sintered body, and (L2,a2,b2) represent values of (L*,a*,b*) after sintering as measured at a second point falling within an interval of a length from the other end of the zirconia pre-sintered body to 25% of the entire length of the straight line, and the values of (L*,a*,b*) after sintering show unchanging patterns of increase and decrease in a direction from the first point to the second point.

A zirconia sintered body that includes a transparent zirconia portion and an opaque zirconia portion has a biaxial bending strength of 300 MPa or more. In addition, the opaque zirconia portion is configured by an opaque zirconia sintered body that is any one of a dark-colored zirconia sintered body, a medium-light-colored zirconia sintered body, and a light-colored zirconia sintered body.