Abstract: A planar high temperature fuel cell, a use and a method of manufacture are discloses. The planar high-temperature fuel cell with includes a layer structure. The layer structure includes a cathode layer, an anode layer and a solid electrolyte layer disposed between the cathode layer and the anode layer. Each of the layers are planar. A porous metal structure is used as the support for the layer structure and is also planar.

Abstract: Disclosed is a high-temperature fuel cell system including individual SOFC fuel cells which are in contact with each other to be electrically connected in parallel or in series. Contacting elements are provided, in at least one embodiment, that are suitable for the fuel cell system with a certain flexibility in addition to electrical conductivity for continuous operation. The contacting elements are provided, in at least one embodiment, between two fuel cells with an outer, metallically conductive jacket and a ceramic core. For example, ceramic felts can be enveloped by a nickel net by adequately shaping the same.

Abstract: A high-temperature fuel cell system includes individual SOFC fuel cells which are in contact with each other for electrically connecting the same in parallel or in series. In at least one embodiment, contacting elements that are suitable for the fuel cell system with a certain flexibility in addition to the required electrical conductivity for continuous operation. The contacting elements between two fuel cells are formed by a metal wire mesh that is advantageously made of nickel. Such nickel wires can be mechanically transformed into a continuous mesh, especially a tube, from which sections having a suitable length can be cut and be provided with the proper shape.

Abstract: Disclosed is a high-temperature fuel cell system including individual SOFC fuel cells which are in contact with each other to be electrically connected in parallel or in series. Contacting elements are provided, in at least one embodiment, that are suitable for the fuel cell system with a certain flexibility in addition to electrical conductivity for continuous operation. The contacting elements are provided, in at least one embodiment, between two fuel cells with an outer, metallically conductive jacket and a ceramic core. For example, ceramic felts can be enveloped by a nickel net by adequately shaping the same.

Abstract: A wear assembly includes an adapter with a nose, a wear member with a socket to receive the nose, and a lock to secure the wear member to the adapter. The nose and socket include complementary rails and grooves that vertically diverge as they extend from the front of the nose. The lock can have a tapered construction.

Abstract: According to a method for producing a solid ceramic fuel cell, a solid electrolyte layer is gas-tightly deposited on an electrode inside a coating chamber, using a plasma spraying technique. The pressure inside the coating chamber is set at less than approximately 15 mbar for this purpose. A coating material is powder form, preferably with a particle diameter of significantly less than 10 ?m, is finely dispersed in the plasma jet in such a way that the individual particles are isolated from each other when they meet the electrode. This enables a very homogenous and impervious solid electrolyte layer to be deposited.

Abstract: A method for producing a solid electrolyte layer, of a fully stabilized zirconium oxide layer on a substrate includes adding a sintering additive to a ZrO2-starting material, a liquid phase is formed during a sintering process and liquid phase sintering is possible at a reduced temperature in comparison with the required sintering temperature without the sintering additive. The reduced sintering temperature substantially prevents the formation of a foreign phase layer between the substrate and the gas-tight layer applied thereon, being of fully stabilized ZrO2. The method is particularly suitable for producing a solid electrolyte layer on a cathode of a high temperature fuel cell and in a sensor.

Abstract: Disclosed is a gas turbine blade (1) having a ceramic heat-insulating layer (17). The ceramic heat-insulating layer (17) consists of 10-95% wt. % magnesium aluminate, 5-90 wt. % magnesium oxide and 0-20 wt. % aluminum oxide. Magnesium oxide particles are incorporated into a matrix made of spindle-shaped magnesium aluminate, enabling the thermal expansion coefficient of the ceramic heat-insulating layer (17) to be adapted in a particularly suitable manner to a metallic base body (15) of the gas turbine blade (1). The ceramic heat-insulating layer (17) also has a porosity which is greater that 3 vol. %, thereby guaranteeing sufficiently low heat conductivity.

Abstract: In a high-temperature fuel cell, the problem exists that a series electrical resistance rises while the high-temperature fuel cell is operating. This rise is caused by oxidation of the fuel-gas-side surface of the bipolar plate. Oxidation of this nature is largely suppressed by an oxidation buffer that is disposed in the fuel gas chamber and takes up the oxygen.

Abstract: A combination of a plasma spraying process and a vacuum slip casting process is carried out. By combining these two processes, which can each be carried out without difficulty, it is surprisingly possible to achieve good electrolyte layers. Therefore, it is possible to construct a fuel cell system using coated tubes in a bundled arrangement, the tubes being electrically connected in series and operated as a fuel cell generator in power units of between 100 kW and a few MW.

Abstract: According to a method for producing a solid ceramic fuel cell, a solid electrolyte layer is gas-tightly deposited on an electrode inside a coating chamber, using a plasma spraying technique. The pressure inside the coating chamber is set at less than approximately 15 mbar for this purpose. A coating material is powder form, preferably with a particle diameter of significantly less than 10 &mgr;m, is finely dispersed in the plasma jet in such a way that the individual particles are isolated from each other when they meet the electrode. This enables a very homogenous and impervious solid electrolyte layer to be deposited.

Abstract: Disclosed is a gas turbine blade (1) having a ceramic heat-insulating layer (17). The ceramic heat-insulating layer (17) consists of 10-95% wt. % magnesium aluminate, 5-90 wt. % magnesium oxide and 0-20 wt. % aluminum oxide. Magnesium oxide particles are incorporated into a matrix made of spindle-shaped magnesium aluminate, enabling the thermal expansion coefficient of the ceramic heat-insulating layer (17) to be adapted in a particularly suitable manner to a metallic base body (15) of the gas turbine blade (1). The ceramic heat-insulating layer (17) also has a porosity which is greater that 3 vol. %, thereby guaranteeing sufficiently low heat conductivity.

Abstract: During operation of a high-temperature fuel cell the problem of corrosion of the interconnector on the anode side arises. Accordingly, this problem is substantially prevented by use of at least two metallic functional layers that are applied one above the other on the interconnector. A lower functional layer contains copper and an upper functional layer contains nickel. Functional layers of this type construct a potential threshold for oxygen ions toward the interconnector.

Abstract: A method for producing a solid electrolyte layer, of a fully stabilized zirconium oxide layer on a substrate includes adding a sintering additive to a ZrO2-starting material, a liquid phase is formed during a sintering process and liquid phase sintering is possible at a reduced temperature in comparison with the required sintering temperature without the sintering additive. The reduced sintering temperature substantially prevents the formation of a foreign phase layer between the substrate and the gas-tight layer applied thereon, being of fully stabilized ZrO2. The method is particularly suitable for producing a solid electrolyte layer on a cathode of a high temperature fuel cell and in a sensor.

Abstract: During operation of a high-temperature fuel cell the problem of corrosion of the interconnector on the anode side arises. Accordingly, this problem is substantially prevented by use of at least two metallic functional layers that are applied one above the other on the interconnector. A lower functional layer contains copper and an upper functional layer contains nickel. Functional layers of this type construct a potential threshold for oxygen ions toward the interconnector.

Abstract: In a high-temperature fuel cell, the problem exists that a series electrical resistance rises while the high-temperature fuel cell is operating. This rise is caused by oxidation of the fuel-gas-side surface of the bipolar plate. Oxidation of this nature is largely suppressed by an oxidation buffer that is disposed in the fuel gas chamber and takes up the oxygen.

Abstract: In a high-temperature fuel cell having two components that are joined together by a layer. The layer includes at least one ply of a glass solder and at least one ply of a glass ceramic. Because of this provision, the components are joined together mechanically and chemically in a stable and economic manner.