Powder metallurgical molding and method of producing same
AssigneePlansee SE
InventorsMarco Brandner, Michael O'Sullivan, Thomas Leiter, Oliver Hirsch, Wolfgang Kraussler
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Abstract
A powder metallurgical molding forms an interconnector or an end plate for an electrochemical cell. The molding has a chromium content of at least 80% by weight, a basic shape of a plate and one or more flow fields with structuring formed on one or both of the main faces of the molding. A ratio of a maximum diameter Dmax of the molding, measured along the main face, to a minimum thickness dmin of a core region of the molding which extends along the flow field or fields and is not affected by the structuring lies in a range of 140≤Dmax/dmin≤350.
Claims18
A powder metallurgical molding for an electro-chemical cell, the molding comprising:
- a plate having a basic plate shape with two main faces;
- said plate being formed with a chromium content of at least 80% by weight and being configured as an interconnector for a solid oxide fuel cell (SOFC);
- each of said main faces having:
- a flow field formed on each of said main faces, said main face having, in a region of said flow field, a structuring with a plurality of knob-shaped or ridge-like elevations and intermediate depressions;
- an edge region laterally of the respective said flow field and surrounding the respective said flow field completely or partially;
- wherein a ratio of a maximum diameter Dmax of the molding, measured along the main face, to a minimum thickness dmin of a core region of the molding that extends along the flow field(s) and is not affected by the structuring lies in a range of 140≤Dmax/dmin≤350;
- and
- wherein a maximum thickness dmax of the molding in the region of said flow field is ≤2.3 mm (millimeters).
Dependencies are inferred from the claim text.