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    Austenitic stainless steel low in nickel containing stabilizing elements
    45.
    发明专利
    Austenitic stainless steel low in nickel containing stabilizing elements 未知

    公开(公告)号：AU2008341063C1

    公开(公告)日：2014-05-22

    申请号：AU2008341063

    申请日：2008-02-20

    Applicant: ATI PROPERTIES INC

    Inventor： BERGSTROM DAVID S ,  GRUBB JOHN F ,  RAKOWSKI JAMES M ,  STINNER CHARLES P ,  DUNN JOHN J

    IPC: C22C38/38 ,  C22C38/58

    Abstract: An austenitic stainless steel composition including relatively low nickel and molybdenum levels, and exhibiting corrosion resistance, resistance to elevated temperature deformation, and formability properties comparable to certain alloys including higher nickel and molybdenum levels. Embodiments of the austenitic stainless steel include, in weight %, up to 0.20 C, 2.0-9.0 Mn, up to 2.0 Si, 16.0-23.0 Cr, 1.0-7.0 Ni, up to 3.0 Mo, up to 3.0 Cu, 0.05-0.35 N, up to 4.0 W, (7.5(%C)) ≤ (Nb + Ti + V +Ta + Zr) ≤ 1.5, up to 0.01 B, up to 1.0 Co, iron and impurities. Additionally, embodiments of the steel may include 0.5 ≤ (Mo + W/2) ≤ 5.0 and/or 1.0 ≤ (Ni + Co) ≤ 8.0.

    Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells
    46.
    发明专利
    Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells 未知

    公开(公告)号：AU2011244954B2

    公开(公告)日：2014-01-16

    申请号：AU2011244954

    申请日：2011-11-03

    Applicant: ATI PROPERTIES INC

    Inventor： RAKOWSKI JAMES M ,  STINNER CHARLES P

    IPC: H01M8/02

    Abstract: Abstract Various non-limiting embodiments are disclosed relating to interconnects for use with solid oxide fuel cells. For example, one non-limiting embodiment relates to an interconnect for use with solid oxide fuel cells comprising a gas-impermeable body, the gas impermeable body being formed from a ferritic stainless steel and including (a) a fuel side comprising a via and a gas flow channel, and (b) an oxidant side opposite the fuel side, the oxidant side comprising a via and a gas flow channel; wherein a metallic material that forms an oxide having a dissociation pressure greater than a partial pressure of oxygen proximate the fuel side of the interconnect during operation of the solid oxide fuel cells is connected to at least a portion of the ferritic stainless steel on the fuel side of the body.

    Austenitic stainless steel low in nickel containing stabilizing elements
    47.
    发明专利
    Austenitic stainless steel low in nickel containing stabilizing elements 未知

    公开(公告)号：AU2008341063B2

    公开(公告)日：2013-07-04

    申请号：AU2008341063

    申请日：2008-02-20

    Applicant: ATI PROPERTIES INC

    Inventor： BERGSTROM DAVID S ,  GRUBB JOHN F ,  RAKOWSKI JAMES M ,  STINNER CHARLES P ,  DUNN JOHN J

    IPC: C22C38/38 ,  C22C38/58

    Abstract: An austenitic stainless steel composition including relatively low nickel and molybdenum levels, and exhibiting corrosion resistance, resistance to elevated temperature deformation, and formability properties comparable to certain alloys including higher nickel and molybdenum levels. Embodiments of the austenitic stainless steel include, in weight %, up to 0.20 C, 2.0-9.0 Mn, up to 2.0 Si, 16.0-23.0 Cr, 1.0-7.0 Ni, up to 3.0 Mo, up to 3.0 Cu, 0.05-0.35 N, up to 4.0 W, (7.5(%C)) ≤ (Nb + Ti + V +Ta + Zr) ≤ 1.5, up to 0.01 B, up to 1.0 Co, iron and impurities. Additionally, embodiments of the steel may include 0.5 ≤ (Mo + W/2) ≤ 5.0 and/or 1.0 ≤ (Ni + Co) ≤ 8.0.

    Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells
    49.
    发明专利
    Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells 未知

    公开(公告)号：AU2006259739B2

    公开(公告)日：2011-09-08

    申请号：AU2006259739

    申请日：2006-06-01

    Applicant: ATI PROPERTIES INC

    Inventor： RAKOWSKI JAMES M ,  STINNER CHARLES P

    IPC: H01M8/02

    Abstract: Various embodiments relate to 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 a 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 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 ≤ 0.1 weight percent aluminum and/or silicon, and > 1 up to 2 weight percent manganese. Methods of making interconnects are also disclosed.

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