A method for the joining of ceramic pieces with a hermetically sealed joint comprising brazing a layer of joining material between the two pieces. The wetting and flow of the joining material is controlled by the selection of the joining material, the joining temperature, the joining atmosphere, and other factors. The ceramic pieces may be on a non-diffusable type, such as aluminum nitride, alumina, beryllium oxide, and zirconia, and the pieces may be brazed with an aluminum alloy under controlled atmosphere. The joint material is adapted to later withstand both the environments within a process chamber during substrate processing, and the oxygenated atmosphere which may be seen within the shaft of a heater or electrostatic chuck.

The present disclosure describes silicon carbide articles useful at high temperatures, and the method of making them. The method includes: providing a plurality of silicon carbide parts; providing a mullite gasket; placing the gasket between the ends of the parts to be joined to thereby form an assembly; applying a load in the range of 15-25 pounds per square inch to the parts' ends distal from the gasket to thereby press the gasket; heating the assembly in a muffle furnace under load to a temperature in the range of 1450 C. to 1550 C.; increasing the load on the to range of 30-50 pounds per square inch and holding the assembly at the temperature for a time in the range of 2-5 days to adhere the mullite gasket to the ends of the silicon carbide parts.

A surface-coated cutting tool according to the present invention includes a coating. The coating has an -Al.sub.2O.sub.3 layer. The -Al.sub.2O.sub.3 layer includes a lower layer portion and an upper layer portion. When respective crystal orientations of crystal grains of -Al.sub.2O.sub.3 are specified by performing EBSD analyses with an FE-SEM on a cross-section obtained when the -Al.sub.2O.sub.3 layer is cut along a plane including a normal line of a surface of the -Al.sub.2O.sub.3 layer and a color map is prepared based on the crystal orientations, in the color map, an area in the upper layer portion occupied by the crystal grains of which normal direction of a (001) plane is within 10 with respect to a normal direction of the surface of the -Al.sub.2O.sub.3 layer is equal to or more than 90%, and such an area in the lower layer portion is equal to or less than 50%.

An acetabular reamer of the type used in total hip arthroplasty (THA) to prepare a patient's acetabulum for implantation of a hip prosthesis is described. The acetabular reamer consists of a substantially hemispherical cup having a plurality of cutter-hole combinations aligned along one or more loxodromes on the surface of the hemispherical cup. The reamer, complete with integral back plate for connecting the reamer to a driver, is produced to net shape using a molding and sinterwelding technique.

The present invention relates to a method for the automated production of a workpiece having at least one diaphragm, including a workpiece for an electrochemical sensor, including providing a workpiece that has a wall with at least one continuous opening through the wall, wherein a diaphragm body is affixed in the at least one opening, such that the diaphragm body completely fills a cross-section of the opening, and processing the diaphragm body by means of a laser.

Provided is a slider having appearance or texture which cannot be obtained with a slider body made of metal or synthetic resin in the related art and further having properties superior than those of sliders in the related art. A slider of an embodiment of the invention includes a slider body formed by sintered bodies containing zirconium oxide as a main component and a tab held by a tab attaching portion of the slider body.

The present disclosure relates to a gas turbine part, which can be exposed to high temperatures and centrifugal forces within a gas turbine. The gas turbine part can include plural sliced parts, wherein at least one of said sliced parts is made from a ternary ceramic called MAX phase, having the formula M.sub.n+1AX.sub.n, where n=1, 2, or 3, M is an early transition metal such as Ti, V, Cr, Zr, Nb, Mo, Hf, Sc, Ta, and A is an A-group element such as Al, Si, P, S, Ga, Ge, As, Cd, In, Sn, Tl, Pb, and X is C and/or N.

A method of fabricating a sound attenuation panel of curved shape, the method including impregnating a fiber structure defining a cellular structure with a ceramic precursor resin; polymerizing the ceramic precursor resin while holding the fiber structure on tooling presenting a curved shape corresponding to the final shape of the cellular structure; docking the cellular structure with first and second skins, each formed by a fiber structure impregnated with a ceramic precursor resin, each skin being docked to the cellular structure before or after polymerizing the resin of the skins; pyrolyzing the assembly constituted by the cellular structure and the first and second skins; and densifying the assembly by chemical vapor infiltration.

An apparatus including a first component having an exterior surface formed of a ceramic material and including a primary surface region and a plurality of secondary surface regions protruding from the primary surface region, and a second component positioned in contact with at least one of the secondary surface regions and spaced from the primary surface region to define a determinant load path between the first and second components. A method of forming the apparatus is also provided.

A method for the joining of ceramic pieces with a hermetically sealed joint comprising brazing a layer of joining material between the two pieces. The wetting and flow of the joining material is controlled by the selection of the joining material, the joining temperature, the joining atmosphere, and other factors. The ceramic pieces may be on a non-diffusable type, such as aluminum nitride, alumina, beryllium oxide, and zirconia, and the pieces may be brazed with an aluminum alloy under controlled atmosphere. The joint material is adapted to later withstand both the environments within a process chamber during substrate processing, and the oxygenated atmosphere which may be seen within the shaft of a heater or electrostatic chuck.