公开(公告)号：CA2840861A1

公开(公告)日：2006-12-28

申请号：CA2840861

申请日：2006-06-01

Applicant: ATI PROPERTIES INC

Inventor： BAKOWSKI JAMES M ,  STINNER CHARLES P

IPC: C22C38/38 ,  C22C38/04 ,  C22C38/22 ,  H01M8/021 ,  H01M8/10

Abstract: Interconnects for solid oxide fuel cells ("SOFCs") comprising ferritic stainless steel and having at least one via that when subjected to an oxidizing atmosphere at an elevated temperature develops a scale comprising a manganese-chromate spinel on at least a portion of surface thereof, and at least one gas flow channel that when subjected to an oxidizing atmosphere at an elevated temperature develops an aluminum-rich oxide scale on at least a portion of a surface thereof. Other embodiments relate to interconnects comprising a ferritic stainless steel and having a fuel side comprising a metallic material that resists oxidation during operation of the SOFCs, and optionally include a nickel-base superalloy on the oxidant side thereof. Still other embodiments relate to ferritic stainless steels adapted for use as interconnects comprising 1 up to 2 weight percent manganese. Methods of making interconnects are also disclosed.