公开(公告)号：AU2006344097A1

公开(公告)日：2008-04-10

申请号：AU2006344097

申请日：2006-04-07

Applicant: ATI PROPERTIES INC

Inventor： STINNER CHARLES P ,  RAKOWSKI JAMES M

IPC: C22C38/44 ,  C22C38/48 ,  C22C38/58

Abstract: Embodiments of an austenitic stainless steel include, in weight percentages based on total weight of the steel: 0.05 to 0.2 carbon; 0.08 to 0.2 nitrogen; 20 to 23 chromium; 25 to 27 nickel; 1 to 2 molybdenum; greater than 1.5 to 4.0 manganese; 0.20 to 0.75 niobium; up to 0.1 titanium; iron; and incidental impurities. Certain other embodiments of an austenitic stainless steel include, in weight percentages based on total weight of the steel: 0.05 to 0.2 carbon; 0.08 to 0.2 nitrogen; 20 to 23 chromium; 25 to 27 nickel; 1 to 2 molybdenum; up 4.0 manganese; 0.20 to 0.75 niobium; at least one of no greater than 0.1 titanium and no greater than 0.1 aluminum; iron; and incidental impurities.

公开(公告)号：NO20076693L

公开(公告)日：2008-02-29

申请号：NO20076693

申请日：2007-12-28

Applicant: ATI PROPERTIES INC

Inventor： RAKOWSKI JAMES M ,  STINNER CHARLES P

IPC: C22C38/44 ,  C22C38/58 ,  C22C38/48

Abstract: Embodiments of an austenitic stainless steel include, in weight percentages based on total weight of the steel: 0.05 to 0.2 carbon; 0.08 to 0.2 nitrogen; 20 to 23 chromium; 25 to 27 nickel; 1 to 2 molybdenum; greater than 1.5 to 4.0 manganese; 0.20 to 0.75 niobium; up to 0.1 titanium; iron; and incidental impurities. Certain other embodiments of an austenitic stainless steel include, in weight percentages based on total weight of the steel: 0.05 to 0.2 carbon; 0.08 to 0.2 nitrogen; 20 to 23 chromium; 25 to 27 nickel; 1 to 2 molybdenum; up 4.0 manganese; 0.20 to 0.75 niobium; at least one of no greater than 0.1 titanium and no greater than 0.1 aluminum; iron; and incidental impurities.

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.