EP0033203A2 - Trägerwerkstoff für Katalysatoren und ferritischer rostfreier Stahl, aus dem der genannte Träger hergestellt wird - Google Patents

Trägerwerkstoff für Katalysatoren und ferritischer rostfreier Stahl, aus dem der genannte Träger hergestellt wird Download PDF

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Publication number
EP0033203A2
EP0033203A2 EP81300144A EP81300144A EP0033203A2 EP 0033203 A2 EP0033203 A2 EP 0033203A2 EP 81300144 A EP81300144 A EP 81300144A EP 81300144 A EP81300144 A EP 81300144A EP 0033203 A2 EP0033203 A2 EP 0033203A2
Authority
EP
European Patent Office
Prior art keywords
ferritic stainless
stainless steel
yttrium
substrate
chromium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP81300144A
Other languages
English (en)
French (fr)
Other versions
EP0033203A3 (de
Inventor
George Aggen
Remus Adam Lula
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Allegheny Ludlum Steel Corp
Original Assignee
Allegheny Ludlum Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Allegheny Ludlum Steel Corp filed Critical Allegheny Ludlum Steel Corp
Publication of EP0033203A2 publication Critical patent/EP0033203A2/de
Publication of EP0033203A3 publication Critical patent/EP0033203A3/de
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium

Definitions

  • the present invention relates to a system comprising a substrate and a catalytic material and to the alloy from which the substrate is formed.
  • Ceramic substrates do not have the mechanical properties; e.g., shock resistance, of metallic substrates. Ceramic substrates are, in addition, inherently thicker than are metallic substrates.
  • a particular metallic substrate is described in United States Patent No. 3,920,583. It is a ferritic stainless steel which contains up to 15% chromium, 0.5% to 12% aluminium and 0.1 to 3% yttrium.
  • Yttrium is an expensive material which is not presently available in abundant quantities, and a material characterized by a low recovery rate during melting.
  • the present invention relates to a substrate wherein the yttrium level of Patent No. 3,920,583 is significantly reduced. It has been determined that high quality substrates can be produced from iron-chromium-aluminium alloys having less than 0.1% yttrium.
  • the present invention provides a system comprising a ferritic stainless steel substrate having a tightly adherent oxide coating and a catalytic material thereupon, said ferritic stainless steel being of a chemistry which forms a tightly adherent non-spalling scale suitable for application of a catalytic bearing material; characterized in that the ferritic stainless steel substrate consists essentially of, by weight, up to 26% chromium, from 1 to 8% aluminium, between 0.01 and 0.1% yttrium, up to 0.1% carbon, up to 2% silicon, balance essentially iron.
  • the present invention further provides a ferritic stainless steel consisting essentially of, by weight, up to 26% chromium, from 1 to 8% aluminium, between 0.01 to 0.1% yttrium, up to 0.1% carbon, up to 2% silicon, balance essentially iron.
  • the substrate is in most instances of a thickness of from 0.0127 to 0.254mm (0.0005 to 0.01 inch).
  • Chromium may be present within the substrate or steel of the present invention as it is known to improve oxidation resistance. A maximum limit is placed thereupon as chromium is expensive and renders the alloy more difficult to process. Chromium is usually present within the range of from 5 to 22%, and preferably within the range of from 12. to 20%.
  • Aluminium is present as it improves the oxidation resistance of the substrate or steel. A maximum limit is placed thereupon as aluminium, like chromium, is expensive and renders the alloy more difficult to process. Aluminium is preferably present within the range of from 3 to 6%.
  • Yttrium is present as it stabilizes the aluminium- bearing scale and makes it both tight and adherent. It is preferably present in amounts between 0.03 to 0.09%.
  • Carbon and silicon are preferably maintained at respective maximum levels of 0.03 and 0.5%.
  • ferritic stainless steels have inherently high transition temperatures, which rise with increasing carbon levels, low carbon contents should be specified in order to obtain a more ductile material.
  • the present invention is not dependent upon any particular means for manufacturing the catalytic system described herein.
  • the system can be produced in accordance with the teachings of heretofore referred to United States Patent No. 3,920,583, or by any other process known to those skilled in the art.
  • Platinum, palladium, irridium, rhodium, and alloys thereof, are typical catalytic materials.
  • the catalyst serves to provoke oxidation of partially oxidized hydrocarbons; e.g., CO to CO 2 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
EP81300144A 1980-01-28 1981-01-14 Trägerwerkstoff für Katalysatoren und ferritischer rostfreier Stahl, aus dem der genannte Träger hergestellt wird Ceased EP0033203A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11564780A 1980-01-28 1980-01-28
US115647 1980-01-28

Publications (2)

Publication Number Publication Date
EP0033203A2 true EP0033203A2 (de) 1981-08-05
EP0033203A3 EP0033203A3 (de) 1981-08-26

Family

ID=22362627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81300144A Ceased EP0033203A3 (de) 1980-01-28 1981-01-14 Trägerwerkstoff für Katalysatoren und ferritischer rostfreier Stahl, aus dem der genannte Träger hergestellt wird

Country Status (3)

Country Link
EP (1) EP0033203A3 (de)
JP (1) JPS56121641A (de)
CA (1) CA1170481A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091526A2 (de) * 1982-04-12 1983-10-19 Allegheny Ludlum Corporation Eisen-Chrom-Aluminiumlegierung, Gegenstände hieraus und Herstellungsverfahren dafür
FR2587635A1 (fr) * 1985-09-20 1987-03-27 Onera (Off Nat Aerospatiale) Procede d'obtention d'un element allonge (notamment ruban ou fil) constitue en un alliage, element allonge ainsi obtenu et applications de celui-ci
US4661169A (en) * 1982-04-12 1987-04-28 Allegheny Ludlum Corporation Producing an iron-chromium-aluminum alloy with an adherent textured aluminum oxide surface
EP0467110A1 (de) * 1990-07-12 1992-01-22 Forschungszentrum Jülich Gmbh Katalysator zur Beseitigung von Wasserstoff aus einer Wasserstoff, Sauerstoff und Dampf enthaltenden Atmosphäre
EP0480461A1 (de) * 1990-10-11 1992-04-15 Nisshin Steel Co., Ltd. Aluminium enthaltender rostfreier ferritischer Stahl mit hoher Beständigkeit gegen Hochtemperatursoxydation und hoher Zähigkeit
EP0572674A1 (de) * 1991-12-20 1993-12-08 Nippon Steel Corporation Hochfeste rostfreie stahlfolie zum wellen und so hergestellte folie
DE19642497C1 (de) * 1996-10-15 1997-07-24 Krupp Vdm Gmbh Verfahren zur Herstellung einer Eisen-Chrom-Aluminium-Folie und ihre Verwendung
DE10310865B3 (de) * 2003-03-11 2004-05-27 Thyssenkrupp Vdm Gmbh Eisen-Chrom-Aluminium-Legierung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB833446A (en) * 1956-05-23 1960-04-27 Kanthal Ab Improved iron, chromium, aluminium alloys
US3027252A (en) * 1959-09-29 1962-03-27 Gen Electric Oxidation resistant iron-chromium alloy
US3298826A (en) * 1964-04-06 1967-01-17 Carl S Wukusick Embrittlement-resistant iron-chromium-aluminum-yttrium alloys
US3591365A (en) * 1969-01-16 1971-07-06 Santoku Metal Ind Heat resisting corrosion resisting iron chromium alloy
DE2813569A1 (de) * 1977-03-31 1978-10-05 Atomic Energy Authority Uk Eisen-chrom-aluminium-yttrium-legierung
DE2916959A1 (de) * 1978-04-28 1979-11-08 Atomic Energy Authority Uk Legierung aus eisen, chrom, aluminium, yttrium und silicium

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1471138A (en) * 1974-05-06 1977-04-21 Atomic Energy Authority Uk Supports for catalyst materials
JPS51104424A (ja) * 1975-03-13 1976-09-16 Nippon Steel Corp Yosetsunetsueikyobuga enjinhaigasugyoketsusuinyoru tairyukaifushokuseinisugureta fueraitokeisutenresuko

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB833446A (en) * 1956-05-23 1960-04-27 Kanthal Ab Improved iron, chromium, aluminium alloys
US3027252A (en) * 1959-09-29 1962-03-27 Gen Electric Oxidation resistant iron-chromium alloy
US3298826A (en) * 1964-04-06 1967-01-17 Carl S Wukusick Embrittlement-resistant iron-chromium-aluminum-yttrium alloys
US3591365A (en) * 1969-01-16 1971-07-06 Santoku Metal Ind Heat resisting corrosion resisting iron chromium alloy
DE2813569A1 (de) * 1977-03-31 1978-10-05 Atomic Energy Authority Uk Eisen-chrom-aluminium-yttrium-legierung
DE2916959A1 (de) * 1978-04-28 1979-11-08 Atomic Energy Authority Uk Legierung aus eisen, chrom, aluminium, yttrium und silicium

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091526A2 (de) * 1982-04-12 1983-10-19 Allegheny Ludlum Corporation Eisen-Chrom-Aluminiumlegierung, Gegenstände hieraus und Herstellungsverfahren dafür
EP0091526A3 (en) * 1982-04-12 1984-03-21 Allegheny Ludlum Steel Corporation Iron-chromium-aluminium alloy and article and method therefor
US4661169A (en) * 1982-04-12 1987-04-28 Allegheny Ludlum Corporation Producing an iron-chromium-aluminum alloy with an adherent textured aluminum oxide surface
FR2587635A1 (fr) * 1985-09-20 1987-03-27 Onera (Off Nat Aerospatiale) Procede d'obtention d'un element allonge (notamment ruban ou fil) constitue en un alliage, element allonge ainsi obtenu et applications de celui-ci
EP0467110A1 (de) * 1990-07-12 1992-01-22 Forschungszentrum Jülich Gmbh Katalysator zur Beseitigung von Wasserstoff aus einer Wasserstoff, Sauerstoff und Dampf enthaltenden Atmosphäre
EP0480461A1 (de) * 1990-10-11 1992-04-15 Nisshin Steel Co., Ltd. Aluminium enthaltender rostfreier ferritischer Stahl mit hoher Beständigkeit gegen Hochtemperatursoxydation und hoher Zähigkeit
EP0572674A1 (de) * 1991-12-20 1993-12-08 Nippon Steel Corporation Hochfeste rostfreie stahlfolie zum wellen und so hergestellte folie
EP0572674A4 (de) * 1991-12-20 1994-03-30 Nippon Steel Corporation
US5411610A (en) * 1991-12-20 1995-05-02 Nippon Steel Corporation High-strength stainless steel foil for corrugating and process for producing the same
DE19642497C1 (de) * 1996-10-15 1997-07-24 Krupp Vdm Gmbh Verfahren zur Herstellung einer Eisen-Chrom-Aluminium-Folie und ihre Verwendung
DE10310865B3 (de) * 2003-03-11 2004-05-27 Thyssenkrupp Vdm Gmbh Eisen-Chrom-Aluminium-Legierung

Also Published As

Publication number Publication date
EP0033203A3 (de) 1981-08-26
JPS56121641A (en) 1981-09-24
CA1170481A (en) 1984-07-10

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Inventor name: AGGEN, GEORGE

Inventor name: LULA, REMUS ADAM