Compositionally graded metallic plates for planar solid oxide fuel cells,申请号US20020167832-传众专利搜索

Compositionally graded metallic plates for planar solid oxide fuel cells

申请公布号：US6843960(B2)

申请号：US20020167832

申请日期：2002.06.12

申请公布日期：2005.01.18

申请人：

THE UNIVERSITY OF CHICAGO

发明人：KRUMPELT MICHAEL;CRUSE TERRY ALAN;CARTER JOHN DAVID;ROUTBORT JULES L.;KUMAR ROMESH

分类号：B22F3/11;B22F5/00;B22F7/00;H01M8/02;(IPC1-7):B22F3/00

主分类号：B22F3/11

摘要：A method for preparing compositionally graded metallic plates and compositionally graded metallic plates suitable for use as interconnects for solid oxide fuel cells are provided. The method of the invention, utilizing powder metallurgy, enables making metallic plates of generally any desired composition to meet the corrosion requirements of fuel cells and other applications, and enables making metallic plates of graded composition from one surface of the plate to the other. A powder of the desired alloy composition is obtained, then solvents, dispersants, a plasticizer and an organic binder are added to form a slip. The slip is then formed into a layer on a desired substrate that can be flat or textured. Once dried, the layer is removed from the substrate and the binder is burned out. The layer is sintered in a reducing atmosphere at a set temperature for a predefined duration specific to the materials used and the desired final properties.