A ceramic cutting device having a base, longitudinal guides mounted to the base, and a support movably mounted on the longitudinal guides. A cutting-wheel handle holder is pivotably mounted to the support. A cutting-wheel handle is mounted to the handle holder and the cutting wheel is mounted to the handle. An actuating lever is mounted in a threaded hole in the handle holder so as to immobilize the handle so that the handle can apply pressure on a ceramic piece to be cut via the cutting wheel. ...

A ceramic member, which is usable in a state where at least a part thereof is exposed in a reactor in which halogen plasma is generated, includes a base member containing a first ceramic material, and a coating layer on a surface of the base member containing a second ceramic material more resistant to plasma etching than the first ceramic material. Further, the ceramic member includes a thick portion in a region where an etching rate of the coating layer by the halogen plasma is locally high, a...

A stator assembly of a gas turbine engine includes first and second annular metal stator rims. The stator rims, positioned in parallel, include a plurality of ceramic blades therebetween, each ceramic blade having a rounded nose and a flattened and tapered tail. Each ceramic blade further includes an opening for receiving a mounting pin. The mounting pin mounts between the first and second annular stator rims, clamping and containing the ceramic airfoil therebetween in a position relative to an ...

The present invention is ceramic article of stabilized zirconia wherein the stabilized zirconia has a molar ratio of rare earth oxide:zirconia of from 1:99 to 15:85, at a weight percent of from about 97 to 75. The ceramic article includes smectite clay from about 3 to 25 weight percent wherein the article is a mass of sintered particles having a continuous tetragonal phase having dispersed therein monoclinic phase particles having size of less than 100 nm.

The invention relates to a ceramic cooktop comprising a cooking plate (12) made of glass ceramic or glass. The ceramic cooktop also comprises an electrical heat conductor layer (22) and an insulating layer (14) that is located between the cooking plate (12) and the heat conductor layer (22). The insulating layer (14) consists of a plurality of individual layers (16, 18, 20) that each have a porosity that decreases toward the heat conductor layer (22).

An object of the present invention is to provide a ceramic heater so that hot spots around the end portions of a heat resistor may be prevented. A ceramic heater has a ceramic substrate having a mounting face for an object to be heated, a heat resistor 3B embedded in the substrate and having end portions 3a, and a connecting member 6 electrically connected with the end portion 3a. At least one connecting member 6 substantially has an outer shape of a sphere, an ellipsoid of revolution, or a cyli...

An object of the present invention is to provide a ceramic substrate that is superior in temperature rising/dropping characteristics and breakdown voltage at a high temperature, has a small warp amount, and is best as a substrate for semiconductor-producing/examining devices. The ceramic substrate of the present invention is a ceramic substrate having a conductor formed on the surface thereof or inside thereof, characterized in that said ceramic substrate is having 15.times.10.sup.11 or less por...

A ceramic device has an actuator element which includes a shape-retaining layer, an upper electrode formed on an upper portion of the shape-retaining layer, and a lower electrode formed on a lower portion of the shape-retaining layer. A vibrating section of ceramics supports the actuator element and a fixed section of ceramics vibratingly supports the vibrating section. An electrode material of the lower electrode contacting the vibrating section contains an additive in an amount of 0.01% by wei...

Ceramic susceptor whose wafer-retaining face has superior isothermal properties, and that is suited to utilization in apparatuses for manufacturing semiconductors and in liquid-crystal manufacturing apparatuses. In plate-shaped sintered ceramic body 1, resistive heating element 2 is formed. Fluctuation in pullback length L between sintered ceramic body outer-peripheral edge 1a and resistive heating element substantive-domain outer-peripheral edge 2a is within .+-.0.8%, while isothermal rating of...

An objective of the present invention is to provide a ceramic heater making it possible to heat an object to be heated, such as a silicon wafer, evenly. The ceramic heater of the present invention is a ceramic heater having and a resistance heating element formed on the surface of the ceramic substrate or inside the ceramic substrate, wherein: said ceramic heater is equipped with: a temperature-measuring means measuring the temperature of said ceramic substrate and an object to be heated; a cont...