The present invention provides a metal-ceramic base material and the like which allow a ceramic base material and a desired metal material to be easily joined. A metal-ceramic base material (30) to be joined to a metal material (40), includes: a ceramic base material (20); and a metal film (25) provided on the ceramic base material (20), the metal film (25) being formed by thermal spray of a mixed powder material containing aluminum, alumina, and nickel, at least part of the nickel being exposed on a surface of the metal film (25).

A method for manufacturing an abradable layer and a substrate coated with this layer, may include: preparing a powder composition including at least ceramic particles and an inorganic filler having a lamellar crystallographic structure, the volume content of the inorganic filler in the powder composition being in a range of from 1 to 75%; compressing the powder composition; and sintering the powder composition thus compressed in order to obtain the abradable layer.

In a step (a), a guard ring is disposed on a ceramic substrate (a second member) such that one of openings of a through hole of the guard ring is covered with a joint surface of the ceramic substrate. In a step (b), a brazing material made of a metal, a powder made of a material having a smaller thermal expansion coefficient than the brazing material, and a feeding terminal are inserted into the through hole. In a step (c), the brazing material is fused to impregnate the powder with the brazing material to thereby form a joint layer including the brazing material and the powder. In this manner, the joint surface and the joint surface are joined to each other through the joint layer.

A system for producing chemicals, such as, ethylene or gasoline, at high temperature (above 1100 degrees C.) having a feedstock source. The system includes a chemical conversion portion connected with the feedstock source to receive feedstock and convert the feedstock to ethylene or gasoline. The conversion portion includes a coil array and a furnace that heats the feedstock to temperatures in excess of 1100 C. or 1200 C. or even 1250 C. or even 1300 C. or even 1400 C. A method for producing chemicals, such as ethylene or gasoline, at high temperature.

A gas turbine engine airfoil assembly includes an airfoil and an attachment structure respectively bonded to opposing sides of a platform. At least one of the airfoil, the platform and the attachment structure are constructed from a ceramic matrix composite.

A composite body including a substrate and a forming portion which is composed of a composite phase containing a perovskite oxide and a metal oxide different from the perovskite oxide and which is formed on the substrate. The composite body may be a composite body manufactured by a manufacturing method including a forming step of firing in an oxidizing atmosphere, a laminated body in which an inorganic raw material powder containing a compound powder and a metal powder is disposed on a substrate so as to form a forming portion composed of a composite phase containing a perovskite oxide and a metal oxide different from the perovskite oxide on the substrate.

A braze alloy composition for sealing a ceramic component to a metal component in an electrochemical cell is presented. The braze alloy composition includes copper, nickel, and an active metal element. The braze alloy includes nickel in an amount less than about 30 weight percent, and the active metal element in an amount less than about 10 weight percent. An electrochemical cell using the braze alloy for sealing a ceramic component to a metal component in the cell is also provided.

A method for joining a metal component to a ceramic component is presented. The method includes disposing a metallic barrier layer on a metallized portion of the ceramic component, and joining the metal component to the metallized portion of the ceramic component through the metallic barrier layer. The metallic barrier layer comprises nickel and a melting point depressant. The metallic barrier layer is disposed by a screen printing process, followed by sintering the layer at a temperature less than about 1000 degrees Celsius. A sealing structure including a joint between a ceramic component and a metal component is also presented.

A system for producing chemicals, such as, ethylene or gasoline, at high temperature (above 1100 degrees C.) having a feedstock source. The system includes a chemical conversion portion connected with the feedstock source to receive feedstock and convert the feedstock to ethylene or gasoline. The conversion portion includes a coil array and a furnace that heats the feedstock to temperatures in excess of 1100 C. or 1200 C. or even 1250 C. or even 1300 C. or even 1400 C. A method for producing chemicals, such as ethylene or gasoline, at high temperature.

An assembly including a ceramic body. The assembly comprises a tungsten coupling attached to the ceramic body with a first joint that forms a first helium tight seal between the ceramic body and the tungsten coupling and where the first helium tight seal maintains its integrity at a temperature over 400 C. The assembly includes a metal body attached to the tungsten coupling with a second joint that forms a second helium tight seal between the metal body and the tungsten coupling and where the second helium tight seal maintains its integrity at a temperature over 400 C. A method. A mixture. A coupling.