An embodiment of a PCD insert comprises an embodiment of a PCD element joined to a cemented carbide substrate at an interface. The PCD element has internal diamond surfaces defining interstices between them. The PCD element comprises a masked or passivated region and an unmasked or unpassivated region, the unmasked or unpassivated region defining a boundary with the substrate, the boundary being the interface. At least some of the internal diamond surfaces of the masked or passivated region contact a mask or passivation medium, and some or all of the interstices of the masked or passivated region and of the unmasked or unpassivated region are at least partially filled with an infiltrant material.

A ceramic matrix composite includes a substrate which contains a fibrous body made of silicon carbide fiber, and a matrix which is formed in the substrate, and which contains silicon carbide and a silicon material made of silicon or a binary silicon alloy.

A molding tool made of carbon or graphite, namely a casting mold or a casting core for the processing of molten metal or to a molding tool for the processing of molten glass, such as for example a blow mold and a method for producing the molding tool.

A method for constructing multiple ceramic layers by winding continuous ceramic filaments of identical composition to prepare multilayer RF-transparent structures is provided. In the method, identical continuous ceramic filaments are wound to construct a layer with specific dielectric constant according to patterns, characterized by the winding angle, winding density/inter-fiber aperture and winding count/layer thickness. Layers with same or different dielectric characteristics forms a sandwich design to fulfill the desired mechanical, thermal and electrical requirements.

In a processing method for a ceramic-based composite material in which the ceramic-based composite material is molded by layering sheets obtained by impregnating reinforced fibers with a slurry containing ceramic powder and calcining the sheets after curing, the processing method includes a step of layering the sheets in a layering direction to form a laminate, and a step of covering the laminate with a vacuum bag and evacuating the inside of the vacuum bag to mold a cured laminate. In the step of molding the cured laminate, a slurry-removing material configured to absorb excess slurry is disposed with respect to the laminate, and a degassing circuit member provided on at least one side of the laminate and configured to discharge air bubbles generated inside the laminate is disposed with respect to the laminate.

A method for producing dentures uses a green compact containing a mixture of ceramic powder and a binder system. A ceramic shell for dentures can be produced from the green compact and can be shaped and can be adapted to a carrier prior to a firing step below a temperature of 1050° C.

Process for treating a porous dental zirconia block with a coloring solution, the process comprising the steps of providing a porous dental zirconia block having two opposing surfaces, surface U and surface L, treating the upper surface U of the porous dental zirconia block with a coloring solution A.sub.1, wherein the coloring solution is provided with a volume VA.sub.1, turning the porous dental zirconia block around, treating the lower surface L with a coloring solution A.sub.2 which is provided with a volume VA.sub.2. wherein the coloring solutions A.sub.1 and A.sub.2 comprise a solvent and coloring ions, wherein the volume of at least one of the coloring solutions A.sub.1 or A.sub.2 is applied in portions, wherein the following condition is met: Vo=ΣV.sub.AX, with x≥2, with Vo being the overall amount of coloring solution used to infiltrate the porous dental zirconia block.

A process for manufacturing pyrocarbon, includes forming pyrocarbon by a calefaction process from at least one C.sub.2 to C.sub.6 alcohol or polyalcohol precursor, the precursor being ethanol, rough laminar pyrocarbon being obtained by imposing a temperature of between 1250° C. and 1325° C. during calefaction.

The present invention relates to a SiC composite and a method for manufacturing the same. More particularly, the present invention relates to a slurry composition for ceramic matrix composites which can not only reduce the number of precursor impregnation pyrolysis (PIP) cycles but also be useful in the PIP process to increase hardness, thermal stability, and relative density.

A method of forming a ceramic matrix composite component includes forming a fiber preform, the fiber preform including a plurality of ceramic fiber plies, a non-reduced fiber region having an areal weight, and a reduced fiber region characterized by a reduced areal weight less than the areal weight of the non-reduced fiber region by at least 5 percent. The method further includes selectively applying ceramic particles to the reduced fiber region in such manner as to avoid applying the ceramic particles to the non-reduced fiber region, and subsequently densifying the preform.