CA2529720A1 - Iron-chromium-aluminum alloy - Google Patents
Iron-chromium-aluminum alloy Download PDFInfo
- Publication number
- CA2529720A1 CA2529720A1 CA002529720A CA2529720A CA2529720A1 CA 2529720 A1 CA2529720 A1 CA 2529720A1 CA 002529720 A CA002529720 A CA 002529720A CA 2529720 A CA2529720 A CA 2529720A CA 2529720 A1 CA2529720 A1 CA 2529720A1
- Authority
- CA
- Canada
- Prior art keywords
- alloy
- accordance
- weight
- max
- content
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
-
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention relates to an iron-chromium-aluminum alloy having a good oxidation resistance, comprising (in % by mass) 2.5 to 5.0 % Al, 10 to 25 %
Cr, 0.05 0.8 % Si, and additions of > 0.01 to 0.1 % Y and/or > 0.01 to 0.1 %
Hf and/or > 0.01 to 0.2 % Zr and/or > 0.01 to 0.2 % Cer mixed metal (Ce, La, Nd) as well as production-associated impurities.
Cr, 0.05 0.8 % Si, and additions of > 0.01 to 0.1 % Y and/or > 0.01 to 0.1 %
Hf and/or > 0.01 to 0.2 % Zr and/or > 0.01 to 0.2 % Cer mixed metal (Ce, La, Nd) as well as production-associated impurities.
Description
TRANSLATION
S Iron-Chromium-Aluminium Alloy The invention relates to an iron-chromium-aluminium alloy having good oxidation resistance.
Although the catalytic converter is the rule in four-stroke-engines today, the development of catalytic converters for Diesel and two-stroke engines is still in its beginnings. In four-stroke-engines, alloys are used which are similar to those described in EP-A 0387 670: with (in % by weight) 20-25% Cr, 5-8 % Al, max. 0.01 % P, max. 0.01 % Mg, max. 0.5 % Mn, max. 0.005 S, residual iron and unavoidable impurities and, if required, alloying elements, such as 0.03 - 0 08 % Y, 0.004 - 0.008% N, 0.02 - 0.04 %C, 0.035 - 0.07 % Ti, 0,035 - 0.07 % Zr. Since production by traditional methods, namely conventional pouring of the alloy and subsequent hot and cold deformation, is very difficult where aluminium contents of below 6% by weight are concerned and in cases of higher aluminium contents is no longer workable in large-scale productions, alternative production methods have been developed.
US-PS 5.366.139, for instance, discloses a method whereby foils of iron-chromium-aluminium alloys are produced by way of suitable iron-chromium steel being coated on both sides with aluminium or aluminium alloys by way of roll cladding. This composite metal is processed exclusively by cold deformation and is subjected to diffusion annealing to produce a homogeneous structure.
A further method whereby the coating is achieved by way of hot dip aluminizing is disclosed in DE-A 198 34 552. The latter foil has the following chemical composition (all details in by weight): 18 - 25 % Cr, 4 - 10 % Al, 0.03 - 0.08 % Y, max. 0.01 % Ti, 0.01 -0.05 % Zr, 0.01 - 0.05 % Hf, 0.5 - 1.5 % Si, residual iron and method-associated impurities. Foils fabricated with this alloy were to date used in four-stroke-combustion engines.
S Iron-Chromium-Aluminium Alloy The invention relates to an iron-chromium-aluminium alloy having good oxidation resistance.
Although the catalytic converter is the rule in four-stroke-engines today, the development of catalytic converters for Diesel and two-stroke engines is still in its beginnings. In four-stroke-engines, alloys are used which are similar to those described in EP-A 0387 670: with (in % by weight) 20-25% Cr, 5-8 % Al, max. 0.01 % P, max. 0.01 % Mg, max. 0.5 % Mn, max. 0.005 S, residual iron and unavoidable impurities and, if required, alloying elements, such as 0.03 - 0 08 % Y, 0.004 - 0.008% N, 0.02 - 0.04 %C, 0.035 - 0.07 % Ti, 0,035 - 0.07 % Zr. Since production by traditional methods, namely conventional pouring of the alloy and subsequent hot and cold deformation, is very difficult where aluminium contents of below 6% by weight are concerned and in cases of higher aluminium contents is no longer workable in large-scale productions, alternative production methods have been developed.
US-PS 5.366.139, for instance, discloses a method whereby foils of iron-chromium-aluminium alloys are produced by way of suitable iron-chromium steel being coated on both sides with aluminium or aluminium alloys by way of roll cladding. This composite metal is processed exclusively by cold deformation and is subjected to diffusion annealing to produce a homogeneous structure.
A further method whereby the coating is achieved by way of hot dip aluminizing is disclosed in DE-A 198 34 552. The latter foil has the following chemical composition (all details in by weight): 18 - 25 % Cr, 4 - 10 % Al, 0.03 - 0.08 % Y, max. 0.01 % Ti, 0.01 -0.05 % Zr, 0.01 - 0.05 % Hf, 0.5 - 1.5 % Si, residual iron and method-associated impurities. Foils fabricated with this alloy were to date used in four-stroke-combustion engines.
It is the object of the present invention to produce an alloy for applications in the temperature range of 2S0°C to 1000°C having an adequate oxidation resistance which is also achievable in large scale productions.
S
The solution to the task set is provided by an iron-chromium-aluminium alloy having good oxidation resistance, with (in % by weight) 2.S to S.0% A1 and 10 to 2S % Cr and 0.05-0.8 Si as well as additions of > 0.01 to 0.1 % Y and/or > 0.01 to 0.1 % Hf andlor > 0.01 to 0.2%
Zr and/or > 0.01 to 0.2% Cer composition metal (Ce, La, Nd) as well as production-associated impurities.
A preferred iron-chromium-aluminium alloy having good oxidation resistance has the following composition (in % by weight): 2.S - S% A1 and 13 to 21% Cr as well as alternative additions of:
->0.01 to0.1 %Yand>0.01 to0.1 %Hf;
->0.01 %to0.1 %Yand>0.01 to0.1 %Hfand>0.01 %to0.2%Zr;
- > 0.01 to 0.2 % Cer composition metal (Ce, La, Nd);
- > 0.01 to 0.2 % Zr and > 0.01 to 0.2% Cer composition metal (Ce, La, Nd) as well as production-associated impurities.
Surprisingly, it has been found that, in Diesel engines and two-stroke engines, aluminium contents above S % are not required. 2.S to 5.0 % by weight are quite sufficient to guarantee 2S an adequate oxidation resistance in the temperature range of 250°C
to 1000°C which is of interest in this regard, as the examples presented below will show.
Indispensable in this situation are the additions of reactive elements to guarantee the oxidation resistance.
Particularly proven are 0.01 - 0.1 % Y and/or 0.01 - 0.1 % Hf, where, in the presence of both elements, the sum of both these elements must not exceed 0.15 % by weight, because at this level the positive effect of the oxidation resistance will be reversed to a negative. However, also by adding other oxygen-affine reactive elements, such as for instance Zr, Cer composition metal and La, positive effects can be achieved in relation to the oxidation resistance of the alloy.
One method for the fabrication of semi-finished articles from this alloy is characterised in that the semi-finished article following melting of the alloy by way of ingot casting or continuous casting as well as hot and cold deformation may be required to undergo one (or more) intermediate annealing processes.
Advantageous embodiments of the method are described in the dependent claims.
The production of a foil of SOp or even 20w thickness is possible in the conventional manner in such compositions. The slabs can even be produced by way of the particularly inexpensive continuous casting process which in the presence of higher aluminium contents is, as a rule, connected with high losses.
Preferred applications for this alloy are:
- components in exhaust systems of Diesel engines in vessels, Diesel engines and two-stroke engines of motor vehicles (cars, trucks) or motorbikes;
- substrate foils in metallic catalytic converters of Diesel engines and two-stroke engines;
- components in Diesel engine glow plugs;
- knitted metal fabrics and mats for exhaust cleaning systems used in for instance motorcycles, brush cutters, lawn mowers and power saws;
- components for exhaust cleaning systems for fuel cells;
S
The solution to the task set is provided by an iron-chromium-aluminium alloy having good oxidation resistance, with (in % by weight) 2.S to S.0% A1 and 10 to 2S % Cr and 0.05-0.8 Si as well as additions of > 0.01 to 0.1 % Y and/or > 0.01 to 0.1 % Hf andlor > 0.01 to 0.2%
Zr and/or > 0.01 to 0.2% Cer composition metal (Ce, La, Nd) as well as production-associated impurities.
A preferred iron-chromium-aluminium alloy having good oxidation resistance has the following composition (in % by weight): 2.S - S% A1 and 13 to 21% Cr as well as alternative additions of:
->0.01 to0.1 %Yand>0.01 to0.1 %Hf;
->0.01 %to0.1 %Yand>0.01 to0.1 %Hfand>0.01 %to0.2%Zr;
- > 0.01 to 0.2 % Cer composition metal (Ce, La, Nd);
- > 0.01 to 0.2 % Zr and > 0.01 to 0.2% Cer composition metal (Ce, La, Nd) as well as production-associated impurities.
Surprisingly, it has been found that, in Diesel engines and two-stroke engines, aluminium contents above S % are not required. 2.S to 5.0 % by weight are quite sufficient to guarantee 2S an adequate oxidation resistance in the temperature range of 250°C
to 1000°C which is of interest in this regard, as the examples presented below will show.
Indispensable in this situation are the additions of reactive elements to guarantee the oxidation resistance.
Particularly proven are 0.01 - 0.1 % Y and/or 0.01 - 0.1 % Hf, where, in the presence of both elements, the sum of both these elements must not exceed 0.15 % by weight, because at this level the positive effect of the oxidation resistance will be reversed to a negative. However, also by adding other oxygen-affine reactive elements, such as for instance Zr, Cer composition metal and La, positive effects can be achieved in relation to the oxidation resistance of the alloy.
One method for the fabrication of semi-finished articles from this alloy is characterised in that the semi-finished article following melting of the alloy by way of ingot casting or continuous casting as well as hot and cold deformation may be required to undergo one (or more) intermediate annealing processes.
Advantageous embodiments of the method are described in the dependent claims.
The production of a foil of SOp or even 20w thickness is possible in the conventional manner in such compositions. The slabs can even be produced by way of the particularly inexpensive continuous casting process which in the presence of higher aluminium contents is, as a rule, connected with high losses.
Preferred applications for this alloy are:
- components in exhaust systems of Diesel engines in vessels, Diesel engines and two-stroke engines of motor vehicles (cars, trucks) or motorbikes;
- substrate foils in metallic catalytic converters of Diesel engines and two-stroke engines;
- components in Diesel engine glow plugs;
- knitted metal fabrics and mats for exhaust cleaning systems used in for instance motorcycles, brush cutters, lawn mowers and power saws;
- components for exhaust cleaning systems for fuel cells;
- spraying wires for surface coatings of components employed in exhaust systems of diesel and two-stroke systems;
- heating conductors or resistance materials for electrical preheating of exhaust cleaning systems in Diesel and two-stroke systems.
The subject of the invention is described in greater detail in the following examples.
(Aluchrom ISE, Hf3 and Hf4 represent comparative alloys and Aluchrom Hfl and HfZ are the subject of the present invention).
Chemical compositions The examples in accordance with the invention were produced by melting in the electric arc furnace, continuous casting or ingot casting, hot rolling to a thickness of about 3mm, with ~hemi~~he 2us~rnar~n~etzur~~n intermediate annealing at end thicknesses of 0.02 to 0.05 and cold rolling on a 20 roller scaffold.
Oxidation test 5 Weight change at 1100°C, foil thickness 50 a ~ a a:,etsraw ss~
trim 1H 2 ~i~~H~
x y.
m $0 t6~8 ~,~D 'J 'J ~5~3 s~ ~a50 Als~l~prCf Gd h T Exposure time in h Weight change in As the examples show, besides the Al content, the exact tuning of the oxygen affine reactive elements is of predominant importance. For instance, the alloys according to the present invention, Aluchrom Hfl and Aluchrom Hf2, in spite of their comparatively low Al-content of around 3%, show an extremely good oxidation resistance, which is similar to the comparative alloys Aluchrom ISE and Aluchrom Hf4. By comparison, Aluchrom Hf3, in spite of its high Al- content of 5.3fi%, has lower values which can be attributed to the Y
content being too low. In this instance therefore additions of Y or Cer composition metal result in a markedly improved oxidation resistance. (compare Aluchrom ISE and Aluchrom Hf4).
A further important aspect for the construction of metallic catalytic converter substrates for Diesel engines and two-stroke engines is the dimensional stability of the foil during the useful i5ta~s~ssnur~ b~3 a~1, Folsentlts~s ~p~r»
- heating conductors or resistance materials for electrical preheating of exhaust cleaning systems in Diesel and two-stroke systems.
The subject of the invention is described in greater detail in the following examples.
(Aluchrom ISE, Hf3 and Hf4 represent comparative alloys and Aluchrom Hfl and HfZ are the subject of the present invention).
Chemical compositions The examples in accordance with the invention were produced by melting in the electric arc furnace, continuous casting or ingot casting, hot rolling to a thickness of about 3mm, with ~hemi~~he 2us~rnar~n~etzur~~n intermediate annealing at end thicknesses of 0.02 to 0.05 and cold rolling on a 20 roller scaffold.
Oxidation test 5 Weight change at 1100°C, foil thickness 50 a ~ a a:,etsraw ss~
trim 1H 2 ~i~~H~
x y.
m $0 t6~8 ~,~D 'J 'J ~5~3 s~ ~a50 Als~l~prCf Gd h T Exposure time in h Weight change in As the examples show, besides the Al content, the exact tuning of the oxygen affine reactive elements is of predominant importance. For instance, the alloys according to the present invention, Aluchrom Hfl and Aluchrom Hf2, in spite of their comparatively low Al-content of around 3%, show an extremely good oxidation resistance, which is similar to the comparative alloys Aluchrom ISE and Aluchrom Hf4. By comparison, Aluchrom Hf3, in spite of its high Al- content of 5.3fi%, has lower values which can be attributed to the Y
content being too low. In this instance therefore additions of Y or Cer composition metal result in a markedly improved oxidation resistance. (compare Aluchrom ISE and Aluchrom Hf4).
A further important aspect for the construction of metallic catalytic converter substrates for Diesel engines and two-stroke engines is the dimensional stability of the foil during the useful i5ta~s~ssnur~ b~3 a~1, Folsentlts~s ~p~r»
life of the foil. A respective characteristic feature in this regard is the linear deformation which should, if possible, not exceed 4 %.
Dimensional Stability Linear deformation at 1100°C, 50 a foil thickness Lgrn~aderung Ir~rt t~tf~*C, Siam ~oti~r~ka tlrs ~
;~, ~st,r~s ~tt~e~n tit ~
!ctt ttt3 ° 50 s4~ tin tt 2~t d5~ p .bra aa~f Jla~errtn~pit tar T Exposure time in [hJ
Linear deformation in This also shows that the alloys in accordance with the present invention, Aluchrom Hfl and Aluchrom Hf2, having an al content of around 3 % , achieve a dimensional stability of < 4%
as do the comparative alloys Aluchrom ISE and Aluchrom Hf4 having an al content of > 5%.
Also in this case, in spite of their comparatively high A1 content of 5.36 %
but too low a Y
content, the comparative alloy Aluchrom Hf3 does not meet the requirements, since the linear deformation after 400 h, being about 5 %, is clearly too great.
Thus it is surprisingly found that with a suitable tuning of the oxygen-affine reactive elements, even where A1 contents clearly below 5 % are present, a dimensional stability necessary for the production of metallic catalytic converters can be achieved.
A cost-effective production, based on the comparatively low Al contents, by way of ingot casting, continuous casting or even strip casting whilst observing the application-specific parameters is thus achieved.
Dimensional Stability Linear deformation at 1100°C, 50 a foil thickness Lgrn~aderung Ir~rt t~tf~*C, Siam ~oti~r~ka tlrs ~
;~, ~st,r~s ~tt~e~n tit ~
!ctt ttt3 ° 50 s4~ tin tt 2~t d5~ p .bra aa~f Jla~errtn~pit tar T Exposure time in [hJ
Linear deformation in This also shows that the alloys in accordance with the present invention, Aluchrom Hfl and Aluchrom Hf2, having an al content of around 3 % , achieve a dimensional stability of < 4%
as do the comparative alloys Aluchrom ISE and Aluchrom Hf4 having an al content of > 5%.
Also in this case, in spite of their comparatively high A1 content of 5.36 %
but too low a Y
content, the comparative alloy Aluchrom Hf3 does not meet the requirements, since the linear deformation after 400 h, being about 5 %, is clearly too great.
Thus it is surprisingly found that with a suitable tuning of the oxygen-affine reactive elements, even where A1 contents clearly below 5 % are present, a dimensional stability necessary for the production of metallic catalytic converters can be achieved.
A cost-effective production, based on the comparatively low Al contents, by way of ingot casting, continuous casting or even strip casting whilst observing the application-specific parameters is thus achieved.
Claims (19)
1. Iron-chromium-aluminium alloy having good oxidation resistance, with (in %
by weight) 2.5 to 5.0% Al, 10 to 25 % Cr and 0.05 - 0.8% Si as well as additions of >0.01 to 0.1 % Y and/or > 0.01 to 0.1 % Hf and/or > 0.01 to 0.2 % Zr and/or >
0.01 to 0.2 % Cer composition metal (Ce, La, Nd) as well as production-associated impurities.
by weight) 2.5 to 5.0% Al, 10 to 25 % Cr and 0.05 - 0.8% Si as well as additions of >0.01 to 0.1 % Y and/or > 0.01 to 0.1 % Hf and/or > 0.01 to 0.2 % Zr and/or >
0.01 to 0.2 % Cer composition metal (Ce, La, Nd) as well as production-associated impurities.
2. The alloy in accordance with Claim 1, with (in % by weight) 2.5 to < 5 % Al and 13 to 21 % Cr as well as additions of > 0.01 to 0.1 % Y and > 0.01 to 0.1 %
Hf.
Hf.
3. The alloy in accordance with Claim 1, with (in % by weight) 2.5 to < 5 % Al and 13 to 21 % Cr as well as additions of >0.01 to 0.1 % Y and > 0.01 to 0.1 % Hf and >
0.01 to 0.2 % Zr.
0.01 to 0.2 % Zr.
4. The alloy in accordance with Claim 1 with (in % by weight) 2.5 to 5 % Al and 13 to 21 % Cr as well as additions of > 0.01 to 0.2 % Cer composition metal (Ce, La, Nd).
5. The alloy in accordance with Claim 1, with (in % by weight) 2.5 to 5 % Al and 13 to 21 % Cr as well as additions of > 0.01 to 0.2 % Zr and > 0.01 to 0.2 % Cer composition metal (Ce, La, Nd).
6. The alloy in accordance with any one of Claims 1 to 5 with (in % by weight) max.
0.06 % C, max. 0.6 % Si, max. 0.6 % Mn, max. 0.04 % P, max. 0.01 % S, max.
0.02 % N, max. 0.1 % Ti and in total max. 0.5 % Nb, Mo, Cu and/or W.
0.06 % C, max. 0.6 % Si, max. 0.6 % Mn, max. 0.04 % P, max. 0.01 % S, max.
0.02 % N, max. 0.1 % Ti and in total max. 0.5 % Nb, Mo, Cu and/or W.
7. The alloy in accordance with any one of Claims 1 to 6, characterised in that one or more of the elements Y, Hf, Zr, Cer composition metal (Ce, La, Nd) is substituted in part or in full by one or more of the elements Sc, Ti, Nd, Ta, V and/or one or more of the elements of the rare earth metals.
8. The alloy in accordance with any one of Claims 1 to 7, characterised in that (in %
by weight) the Cr content is between 14 and 19 % and the Al content between 2.5 and 4.5 %, wherein the total content (in % by weight) of at least one of the elements Y, Hf, Zr, Cer composition metal (Ce, La, Nd), Sc, Ti, Nb, Ta, V and rare earth metals does not exceed 0.6%.
by weight) the Cr content is between 14 and 19 % and the Al content between 2.5 and 4.5 %, wherein the total content (in % by weight) of at least one of the elements Y, Hf, Zr, Cer composition metal (Ce, La, Nd), Sc, Ti, Nb, Ta, V and rare earth metals does not exceed 0.6%.
9. The alloy in accordance with any one of Claims 1 to 8, characterised in that (in %
by weight) the Cr content is between > 17.5 and < 19 % and the Al content between > 3 and < 4%.
by weight) the Cr content is between > 17.5 and < 19 % and the Al content between > 3 and < 4%.
10. The alloy in accordance with any one of Claims 1 to 9, characterised in that (in %
by weight) the Y content is between > 0.02 and < 0.08 % and the Hf content between > 0.02 and < 0.06 %.
by weight) the Y content is between > 0.02 and < 0.08 % and the Hf content between > 0.02 and < 0.06 %.
11. The alloy in accordance with any one of Claims 1 to 10, characterised in that components fabricated from the alloy after annealing at 1100°C during 400 h at a metal thickness of 50µ show a linear deformation of < 4 %.
12. A method for the fabrication of semi-finished articles from the alloy in accordance with any one of claims 1 to 11, characterised in that the semi-finished articles following melting of the alloy are produced by way of ingot casting, continuous casting or strip casting as well as hot and cold deformation and including (an) intermediate annealing process(es) as required.
13. A use of an alloy in accordance with any one of Claims 1 to 11 for a component in Diesel vehicles and two-stroke devices, in particular in Diesel and two-stroke engines.
14. The use in accordance with Claim 13, characterised in that the alloy is employable as substrate foil in metallic catalytic exhaust converters.
15. The use in accordance with Claim 13 as a component of exhaust cleaning systems where the substrate is made of wire.
16. The use in accordance with Claim 13 as a component in Diesel engine glow cells.
17. The use in accordance with Claim 13 as spraying wire for surface coatings of components employed in exhaust systems of Diesel or two-stroke engines.
18. The use in accordance with Claim 13 as heating conductors or resistance materials for electrical preheating of exhaust cleaning systems of Diesel or two-stroke engines.
19. The use of an alloy in accordance with any one of Claims 1 to 11 as a component in exhaust cleaning systems of fuel cells.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10310865A DE10310865B3 (en) | 2003-03-11 | 2003-03-11 | Use of an iron-chromium-aluminum alloy containing additions of hafnium, silicon, yttrium, zirconium and cerium, lanthanum or neodymium for components in Diesel engines and two-stroke engines |
DE10310865.3 | 2003-03-11 | ||
PCT/DE2004/000454 WO2004081247A2 (en) | 2003-03-11 | 2004-03-08 | Iron-chromium-aluminum alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2529720A1 true CA2529720A1 (en) | 2004-09-23 |
Family
ID=32185994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002529720A Abandoned CA2529720A1 (en) | 2003-03-11 | 2004-03-08 | Iron-chromium-aluminum alloy |
Country Status (14)
Country | Link |
---|---|
US (1) | US20070110609A1 (en) |
EP (1) | EP1601804B1 (en) |
JP (1) | JP2006519929A (en) |
KR (1) | KR20050109545A (en) |
AU (1) | AU2004219941B2 (en) |
BR (1) | BRPI0409579B1 (en) |
CA (1) | CA2529720A1 (en) |
DE (2) | DE10310865B3 (en) |
ES (1) | ES2445584T3 (en) |
MX (1) | MXPA05009519A (en) |
RU (1) | RU2341581C2 (en) |
UA (1) | UA81021C2 (en) |
WO (1) | WO2004081247A2 (en) |
ZA (1) | ZA200506916B (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007005154B4 (en) * | 2007-01-29 | 2009-04-09 | Thyssenkrupp Vdm Gmbh | Use of an iron-chromium-aluminum alloy with a long service life and small changes in the heat resistance |
EP1970461A1 (en) * | 2007-03-14 | 2008-09-17 | Siemens Aktiengesellschaft | Turbine part with heat insulation layer |
DE102010002864A1 (en) | 2009-03-18 | 2010-09-23 | Behr Gmbh & Co. Kg | Layer structured heat-exchanger for high temperature fuel cell system of electricity supply arrangement in motor vehicle, has layer plates and/or cover plates manufactured from iron-chromium-aluminum alloy |
JP5126437B1 (en) * | 2011-04-01 | 2013-01-23 | Jfeスチール株式会社 | Stainless steel foil and catalyst carrier for exhaust gas purification apparatus using the foil |
DE102012004488A1 (en) | 2011-06-21 | 2012-12-27 | Thyssenkrupp Vdm Gmbh | Heat-resistant iron-chromium-aluminum alloy with low chromium evaporation rate and increased heat resistance |
DE202011106778U1 (en) | 2011-06-21 | 2011-12-05 | Thyssenkrupp Vdm Gmbh | Heat-resistant iron-chromium-aluminum alloy with low chromium evaporation rate and increased heat resistance |
DE102011084608A1 (en) * | 2011-10-17 | 2013-04-18 | Ford-Werke Gmbh | Plasma spray process |
KR101446688B1 (en) * | 2013-04-11 | 2014-10-07 | (주)칩타시너지코리아 | Iron-chromium-aluminum alloy showing durability and corrosion resistance in high temperature and wire and metalfiber manufactured by the alloy |
KR20160009688A (en) | 2013-07-30 | 2016-01-26 | 제이에프이 스틸 가부시키가이샤 | Ferrite stainless steel foil |
KR101593027B1 (en) | 2014-12-03 | 2016-02-11 | 주식회사 대창 | Fe-Cu Alloy for RF Shielding Using Fe Cored Wire and Method for Preparing the Same |
KR102022982B1 (en) | 2018-03-09 | 2019-09-19 | 블루메탈(주) | Copper-ferrous alloy cable having magnetic high shield and method thereof |
CN109536834B (en) * | 2018-12-07 | 2019-10-25 | 安徽金月节能科技有限公司 | A kind of heating watt high heat-intensity lectrothermal alloy wire and preparation method thereof |
KR102207956B1 (en) | 2019-05-10 | 2021-01-26 | 블루메탈(주) | Manufacturing method of audio cable having magnetic high shield and high insulating property, and audio cable manufactured by the same |
CN113122778A (en) * | 2021-03-31 | 2021-07-16 | 江苏大学 | High-cleanness low-brittleness Fe-Cr-Al-Y-La alloy material and preparation method thereof |
CN113337783A (en) * | 2021-06-01 | 2021-09-03 | 钢铁研究总院淮安有限公司 | Production method of barium-cleaned iron-chromium-aluminum alloy |
WO2023208274A1 (en) | 2022-04-25 | 2023-11-02 | Vdm Metals International Gmbh | Method for producing a support film for catalytic converters |
DE102023104526A1 (en) | 2022-04-25 | 2023-10-26 | Vdm Metals International Gmbh | Process for producing a carrier film for catalysts |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0033203A3 (en) * | 1980-01-28 | 1981-08-26 | Allegheny Ludlum Steel Corporation | Substrate for catalytic system and ferritic stainless steel from which it is formed |
US4414023A (en) * | 1982-04-12 | 1983-11-08 | Allegheny Ludlum Steel Corporation | Iron-chromium-aluminum alloy and article and method therefor |
JPH076038B2 (en) * | 1986-01-31 | 1995-01-25 | 日立金属株式会社 | Oxidation resistance Fe-Cr-Al alloy |
DE3908526A1 (en) * | 1989-03-16 | 1990-09-20 | Vdm Nickel Tech | FERRITIC STEEL ALLOY |
JPH04354850A (en) * | 1991-05-29 | 1992-12-09 | Nisshin Steel Co Ltd | High al-containing ferritic stainless steel excellent in high temperature oxidation resistance |
DE69213099T2 (en) * | 1991-05-29 | 1997-01-23 | Kawasaki Steel Co | Iron-chromium-aluminum alloy, use of this alloy for catalyst supports and manufacturing processes therefor |
US5366139A (en) * | 1993-08-24 | 1994-11-22 | Texas Instruments Incorporated | Catalytic converters--metal foil material for use therein, and a method of making the material |
DE19834552A1 (en) * | 1998-07-31 | 2000-02-03 | Krupp Vdm Gmbh | Oxidation resistant metal foil |
DE10002933C1 (en) * | 2000-01-25 | 2001-07-05 | Krupp Vdm Gmbh | Iron-chromium-aluminum foil production, used e.g. as support material for exhaust gas treatment catalysts, comprises coating one or both sides of supporting strip with aluminum or aluminum alloys, and carrying out homogenizing treatment |
-
2003
- 2003-03-11 DE DE10310865A patent/DE10310865B3/en not_active Expired - Fee Related
-
2004
- 2004-03-08 ES ES04718262.1T patent/ES2445584T3/en not_active Expired - Lifetime
- 2004-03-08 KR KR1020057016835A patent/KR20050109545A/en active Search and Examination
- 2004-03-08 BR BRPI0409579-0B1A patent/BRPI0409579B1/en active IP Right Grant
- 2004-03-08 US US10/552,310 patent/US20070110609A1/en not_active Abandoned
- 2004-03-08 DE DE112004000857T patent/DE112004000857D2/en not_active Expired - Fee Related
- 2004-03-08 WO PCT/DE2004/000454 patent/WO2004081247A2/en active Application Filing
- 2004-03-08 JP JP2006504254A patent/JP2006519929A/en active Pending
- 2004-03-08 EP EP04718262.1A patent/EP1601804B1/en not_active Expired - Lifetime
- 2004-03-08 AU AU2004219941A patent/AU2004219941B2/en not_active Expired
- 2004-03-08 MX MXPA05009519A patent/MXPA05009519A/en unknown
- 2004-03-08 CA CA002529720A patent/CA2529720A1/en not_active Abandoned
- 2004-03-08 RU RU2005131433/02A patent/RU2341581C2/en active
- 2004-08-03 UA UAA200509408A patent/UA81021C2/en unknown
-
2005
- 2005-08-29 ZA ZA200506916A patent/ZA200506916B/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP1601804A2 (en) | 2005-12-07 |
AU2004219941A1 (en) | 2004-09-23 |
WO2004081247A2 (en) | 2004-09-23 |
AU2004219941B2 (en) | 2008-08-07 |
RU2005131433A (en) | 2006-03-10 |
WO2004081247A3 (en) | 2004-11-18 |
BRPI0409579B1 (en) | 2013-09-03 |
RU2341581C2 (en) | 2008-12-20 |
DE112004000857D2 (en) | 2006-02-09 |
JP2006519929A (en) | 2006-08-31 |
BRPI0409579A (en) | 2006-04-18 |
ZA200506916B (en) | 2006-06-28 |
KR20050109545A (en) | 2005-11-21 |
DE10310865B3 (en) | 2004-05-27 |
ES2445584T3 (en) | 2014-03-04 |
US20070110609A1 (en) | 2007-05-17 |
MXPA05009519A (en) | 2006-03-10 |
EP1601804B1 (en) | 2013-11-20 |
UA81021C2 (en) | 2007-11-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2529720A1 (en) | Iron-chromium-aluminum alloy | |
CN100374585C (en) | High tensile strength hot dip plated steel sheet and method for production thereof | |
KR20080108163A (en) | Hot press method of high-strength alloyed aluminum-system palted steel sheet | |
WO2003106722A1 (en) | Heat-resistant ferritic stainless steel and method for production thereof | |
KR20130022866A (en) | High manganese steel having good adhesiveness of coating layer and method for manufacturing galvanized steel therefrom | |
KR20120074153A (en) | Aluminium coated steel sheet having excellent in oxidization resistence and heat resistence | |
KR100258128B1 (en) | Ferritic stainless steel for exhaust system equipment of vehicle | |
KR20190054124A (en) | Stainless steel plate and stainless steel foil | |
CN1301878A (en) | Rare earth aluminium alloy for thermal dip plating of steel | |
US5019186A (en) | Process for producing chromium-containing steel sheet hot-dip plated with aluminum | |
WO2016092720A1 (en) | Method for manufacturing hot press molded product and hot press molded product | |
EP0632141B1 (en) | Surface treated steel sheet and method therefore | |
JPS6311420B2 (en) | ||
JP4564207B2 (en) | Hot-pressed hot-dip aluminized steel sheet that is heated to 800 ° C or higher | |
EP0625585A1 (en) | Fe-Cr-Al alloy foil having high oxidation resistance for a substrate of a catalytic converter and method of manufacturing same | |
JP4022063B2 (en) | High-strength aluminum-plated steel sheet and high-strength automotive parts with excellent workability and corrosion resistance | |
JP2003105513A (en) | High strength galvanized steel sheet having excellent appearance and workability, and production method therefor | |
JP3577930B2 (en) | High-strength, high-ductility hot-dip galvanized steel sheet and alloyed hot-dip galvanized steel sheet | |
JPH03277761A (en) | Aluminized steel sheet for engine exhaust gas system material excellent in corrosion resistance | |
CN1424421A (en) | Metal carrier material of diesel fuel filter | |
JP3491334B2 (en) | Fe-Cr-Al alloy for catalytic converter carrier excellent in oxidation resistance and method for producing alloy foil using the same | |
KR0146808B1 (en) | Metal catalyst carrier material for purifying autoexhaust | |
JP2000265255A (en) | HOT-DIP Zn-Al BASE ALLOY PLATED STEEL SHEET IMPROVED IN HEAT RESISTANCE AND ITS PRODUCTION | |
JPH07278739A (en) | Alloy steel for muffler of diesel rolling stock excellent in corrosion resistance | |
JP2018115379A (en) | Zn-Al PLATED STEEL PLATE EXCELLENT IN PHOSPHATE CHEMICAL PROCESSABILITY, AND PRODUCTION METHOD THEREOF |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
FZDE | Discontinued |