Herein is disclosed a method of producing a ceramic support suitable for a catalyst, the method comprising providing a porous ceramic structure, comprising a body portion with a monomodal macropore structure, wherein the macropores comprises a first mean pore size; washcoating the porous ceramic structure using a suspension comprising oxide and/or hydroxide nanoparticles and drying and calcinating the washcoated porous ceramic structure at a temperature below the melting point of the nanoparticles. In addition, the ceramic support and its structure is disclosed.

Herein is disclosed a method of producing a ceramic support suitable for a catalyst, the method comprising providing a porous ceramic structure, comprising a body portion with a monomodal macropore structure, wherein the macropores comprises a first mean pore size; washcoating the porous ceramic structure using a suspension comprising oxide and/or hydroxide nanoparticles and drying and calcinating the washcoated porous ceramic structure at a temperature below the melting point of the nanoparticles. In addition, the ceramic support and its structure is disclosed.

A component for use in a semiconductor processing chamber is provided. A component body of a dielectric material has a semiconductor processing facing surface. A coating of a dielectric material is on at least the semiconductor processing facing surface, wherein the dielectric material of the component body has a same stoichiometry as the dielectric material of the coating.

A shaped ceramic abrasive particle, in particular on the basis of alpha-Al.sub.2O.sub.3, includes at least three faces, at least two faces of which form a common vertex on which at least one corner common to the three faces lies. The abrasive particle has at least one structural weakening element. The disclosure also relates to an abrasive article including the abrasive particles, and a method for producing the abrasive particles.

A method for producing a three-dimensional porous transition alumina catalyst monolith of stacked catalyst fibers, comprising: a) Preparing a paste in a liquid diluent of hydroxide precursor particles and/or oxyhydroxide precursor particles of transition alumina particles, all particles in the suspension having a number average particle size in the range of from 0.05 to 700 μm, b) extruding the paste nozzle(s) to form fibers, and depositing the extruded fibers to form a three-dimensional porous catalyst monolith precursor, c) drying the precursor to remove the liquid diluent, d) performing a temperature treatment of the dried porous catalyst monolith precursor to form the transition alumina catalyst monolith, wherein no temperature treatment of the porous catalyst monolith precursor or porous catalyst monolith at temperatures above 1000° C. is performed and wherein no further catalytically active metals, metal oxides or metal compounds are applied to the surface.

An abrasive article includes a body having a bond material extending throughout the body and abrasive particles contained in the bond material. The bond material can include aluminum oxide (Al.sub.2O.sub.3) and lithium oxide (Li.sub.2O). In an embodiment, the bond material can include a ratio (Al.sub.2O.sub.3/Li.sub.2O) of a content of aluminum oxide (Al.sub.2O.sub.3) relative to a content of lithium oxide (Li.sub.2O), based on weight percent, of greater than 11.5 and at most 20. In another embodiment, the abrasive article can have a versatility factor of greater than 1.90.

A mould for manufacturing a packing member from a liquid ceramic composition. The mould including a first part and a second part, in which the first and/or second mould parts are resiliently deformable and the first part and/or the second part include a plurality of open mould cavities. The first and second parts are operable to engage to form closed mould cavities, and the mould is operable to be moved from an open position in which the first and second parts are partially spaced by the deformation of a mould part and in which position mould cavities are open, to a partially closed position by reducing the deformation of the mould part and in which position some of the mould cavities are closed, and then to a closed position by further reducing the deformation of the mould part and in which position the first and second parts are engaged such that the mould cavities are closed.

A mould for manufacturing a packing member from a liquid ceramic composition. The mould including a first part and a second part, in which the first and/or second mould parts are resiliently deformable and the first part and/or the second part include a plurality of open mould cavities. The first and second parts are operable to engage to form closed mould cavities, and the mould is operable to be moved from an open position in which the first and second parts are partially spaced by the deformation of a mould part and in which position mould cavities are open, to a partially closed position by reducing the deformation of the mould part and in which position some of the mould cavities are closed, and then to a closed position by further reducing the deformation of the mould part and in which position the first and second parts are engaged such that the mould cavities are closed.

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.

A pillar shaped honeycomb structure for induction heating, the honeycomb structure being made of ceramics and including: an outer peripheral wall; and a partition wall disposed on an inner side of the outer peripheral wall, the partition wall defining a plurality of cells, each of the cells penetrating from one end face to other end face to form a flow path, wherein a composite material containing a conductor and a non-conductor is provided in the cells in a region of 50% or less of the total length of the honeycomb structure from one end face, and wherein the conductor is a conductor that generates heat in response to a change in a magnetic field.