Vacuumschmelze Gmbh & Company Kg

Robert Boschgmbh

Witold Pieper

Joachim Gerster

Niklas Volbers

Stefan Henneck

Andreas Burghardt

Johannes Tenbrink

Juergen Oberle

Thomas Plum

Tobias Schneider

Jens Burghaus

Harald Staubach

Dominik Fackelmann

Michael Von Pyschow

Arne Huber

Burkard Kraus

Stefan Kaessner

Daniel Simon

Rudi Ansmann

Maxim Smirnov

Michael Koehler

Wolfgang Rammaier

Michael KÖHLER

The invention relates to a method for producing a current collector () for a fuel cell. The method comprises the following steps: mixing a power-type or granulate-type base material () with a binding agent () and with fibres () in order to generate a material mixture (), wherein the fibres () have a lower melting point and/or a lower chemical resistance than the base material (); moulding a moulded body () from the material mixture (); debinding the binding agent () from the moulded body (); removing at least one portion of the fibres () from the moulded body (); and sintering the moulded body (). The invention also relates to a fuel cell having a current collector () that is produced by means of a method according to the invention.

Method for producing a current collector for a fuel cell, and fuel cell

A soft magnetic alloy is provided that consists essentially of 47 weight percent&#x2264;Co&#x2264;50 weight percent, 1 weight percent&#x2264;V&#x2264;3 weight percent, 0 weight percent&#x2264;Ni&#x2264;0.2 weight percent, 0.08 weight percent&#x2264;Nb&#x2264;0.12 weight percent, 0 weight percent&#x2264;C&#x2264;0.005 weight percent, 0 weight percent&#x2264;Mn&#x2264;0.1 weight percent, 0 weight percent&#x2264;Si&#x2264;0.1 weight percent, remainder Fe.

Soft magnetic alloy and method for producing soft magnetic alloy

A soft magnetic alloy is provided that consists essentially of 47 weight percent&#x2266;Co&#x2266;50 weight percent, 1 weight percent&#x2266;V&#x2266;3 weight percent, 0 weight percent&#x2266;Ni&#x2266;0.25 weight percent, 0 weight percent&#x2266;C&#x2266;0.007 weight percent, 0 weight percent&#x2266;Mn&#x2266;0.1 weight percent, 0 weight percent&#x2266;Si&#x2266;0.1 weight percent, at least one of niobium and tantalum in amounts of x weight percent of niobium, y weight percent of tantalum, remainder Fe. The alloy includes 0 weight percent&#x2266;x&#x3c;0.15 weight percent, 0 weight percent&#x2266;y&#x2266;0.3 weight percent and 0.14 weight percent&#x2266;(y+2x)&#x2266;0.3 weight percent. The soft magnetic alloy has been annealed at a temperature in the range of 730&#xb0; C. to 880&#xb0; C. for a time of 1 to 6 hours and comprises a yield strength in the range of 200 MPa to 450 MPa and a coercive field strength of 0.3 A/cm to 1.5 A/cm.

Soft magnetic alloy and method for producing a soft magnetic alloy

A soft magnetic alloy consists essentially of 10 percent by weight&#x2266;Co&#x2266;22 percent by weight, 0 percent by weight&#x2266;V&#x2266;4 percent by weight, 1.5 percent by weight&#x2266;Cr&#x2266;5 percent by weight, 0 percent by weight&#x3c;Mn&#x3c;1 percent by weight, 0 percent by weight&#x2266;Mo&#x2266;1 percent by weight, 0.5 percent by weight&#x2266;Si&#x2266;1.5 percent by weight, 0.1 percent by weight&#x2266;Al&#x2266;1.0 percent by weight and the remainder iron, the content of the elements chromium and manganese and molybdenum and aluminum and silicon and vanadium being 4.0 percent by weight&#x2266;(Cr+Mn+Mo+Al+Si+V)&#x2266;9.0 percent by weight.

Soft magnetic iron-cobalt-based alloy and process for manufacturing it

A method for joining core laminations by adhesive force to form a soft-magnetic laminated core by applying a coating that is wettable with epoxy resin to top sides and undersides of each sheet. The sheets are separated into core laminations made of soft-magnetic sheets, which are stacked to form a core lamination stack, and a cured adhesive introduced in a state of low viscosity into interstices between the core laminations. The core lamination stack has intermediate layers between the core laminations. For this purpose, the core laminations comprise a final-annealed, crystalline CoFe alloy, an adhesive-wettable top side and an adhesive-wettable underside. Together with the intermediate layers, the core laminations form a dimensionally accurate laminated core. The laminated core has a substantially adhesive-free contour consisting of contour surfaces of the core laminations. The adhesive is solvent-free in its low-viscosity state.

Method for joining core laminations by adhesive force to form a soft-magnetic laminated core

The invention relates to a method for the production of a soft magnetic core for generators and generator with a core of this type. To produce a core, a plurality of magnetically activated and/or magnetically activatable textured laminations is produced from a CoFeV alloy. This plurality of laminations is then stacked to form a core assembly. Then the core assembly, if consisting of magnetically activatable laminations, is magnetically activated. Finally, the magnetically activated core assembly is eroded to produce a soft magnetic core. A core of this type is suitable for a generator with a stator and a rotor for high-speed aviation turbines, the laminations in the core assembly being oriented in different texture directions relative to one another.

Method for production of a soft-magnetic core having CoFe or CoFeV laminations and generator or motor comprising such a core

A sensor comprises a magnetic field source, at least one flux conducting soft magnetic element with at least one air gap and at least one magnetic field sensor located in the air gap and measuring a change of the magnetic field of the magnetic field source. The flux conducting soft magnetic element consists of 35% by weight&#x2266;Ni&#x2266;50% by weight, 0% by weight&#x2266;Co&#x2266;2% by weight, 0% by weight&#x2266;Mn&#x2266;1.0% by weight, 0% by weight&#x2266;Si&#x2266;0.5% by weight and 0.5% by weight&#x2266;Cr&#x2266;8% by weight and/or 0.5% by weight&#x2266;Mo&#x2266;8% by weight, wherein (Mo+Cr)&#x2266;8, rest iron and unavoidable impurities.

Low hysteresis sensor

A soft magnetic alloy consists essentially of 5 percent by weight&#x2266;Co&#x2266;30 percent by weight, 1 percent by weight&#x2266;Cr&#x2266;20 percent by weight, 0.1 percent by weight&#x2266;Al&#x2266;2 percent by weight, 0 percent by weight&#x2266;Si&#x2266;1.5 percent by weight, 0.017 percent by weight&#x2266;Mn&#x2266;0.2 percent by weight, 0.01 percent by weight&#x2266;S&#x2266;0.05 percent by weight where Mn/S is &#x3e;1.7, 0 percent by weight&#x2266;O&#x2266;0.0015 percent by weight, und 0.0003 percent by weight&#x2266;Ce&#x2266;0.05 percent by weight, 0 percent by weight&#x2266;Ca&#x2266;0.005 percent by weight and the remainder iron, where 0.117 percent by weight&#x2266;(Al+Si+Mn+V+Mo+W+Nb+Ti+Ni)&#x2266;5 percent by weight.

Soft magnetic iron/cobalt/chromium-based alloy and process for manufacturing it

Disclosed are soft magnetic alloys that consist essentially of 10% by weight &#x2266;Co&#x2266;22% by weight, 0% by weight &#x2266;V&#x2266;4% by weight, 1.5% by weight &#x2266;Cr&#x2266;5% by weight, 1% by weight &#x2266;Mn&#x2266;2% by weight, 0% by weight &#x2266;Mo&#x2266;1% by weight, 0.5% by weight &#x2266;Si&#x2266;1.5% by weight, 0.1% by weight &#x2266;Al&#x2266;1.0% by weight, rest iron. Also disclosed are methods of making the alloys, and products containing them, such as actuator systems, electric motors, and the like.

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Gelnhausen, Germany

Witold Pieper