EP0239838A1 - Application d'un alliage trempé rapidement à base de fer, de chrome et de cobalt - Google Patents
Application d'un alliage trempé rapidement à base de fer, de chrome et de cobalt Download PDFInfo
- Publication number
- EP0239838A1 EP0239838A1 EP19870103341 EP87103341A EP0239838A1 EP 0239838 A1 EP0239838 A1 EP 0239838A1 EP 19870103341 EP19870103341 EP 19870103341 EP 87103341 A EP87103341 A EP 87103341A EP 0239838 A1 EP0239838 A1 EP 0239838A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- iron
- cobalt
- chromium
- phase
- alloys
- 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.)
- Granted
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 29
- 239000000956 alloy Substances 0.000 title claims abstract description 29
- 229910000684 Cobalt-chrome Inorganic materials 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010941 cobalt Substances 0.000 claims abstract description 15
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 15
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011651 chromium Substances 0.000 claims abstract description 13
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000002244 precipitate Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 19
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 239000010955 niobium Substances 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 229910052845 zircon Inorganic materials 0.000 claims description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims 1
- 230000005291 magnetic effect Effects 0.000 description 15
- WBWJXRJARNTNBL-UHFFFAOYSA-N [Fe].[Cr].[Co] Chemical compound [Fe].[Cr].[Co] WBWJXRJARNTNBL-UHFFFAOYSA-N 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 239000000788 chromium alloy Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000005204 segregation Methods 0.000 description 5
- 238000000137 annealing Methods 0.000 description 4
- 238000000265 homogenisation Methods 0.000 description 4
- 238000011835 investigation Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 238000003917 TEM image Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000029142 excretion Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 2
- 229910001004 magnetic alloy Inorganic materials 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000007712 rapid solidification Methods 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 229910002058 ternary alloy Inorganic materials 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
- H01F1/0306—Metals or alloys, e.g. LAVES phase alloys of the MgCu2-type
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
- H01J29/07—Shadow masks for colour television tubes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/07—Shadow masks
- H01J2229/0727—Aperture plate
- H01J2229/0733—Aperture plate characterised by the material
Definitions
- the invention relates to the use of a quenched at a cooling rate of about 103 to 106 K / s iron-chromium-cobalt-type alloy of 10 to 45% chromium, 3 to 35% cobalt, the rest of iron including unavoidable impurities, one of ⁇ - and / or ⁇ -phase precipitates has practically free microcrystalline structure, as a magnetically hard or semi-hard material in the form of tape, wire or filament.
- alloys based on iron-chromium-cobalt have become increasingly important as permanent magnet materials or as magnetically semi-hard materials in recent years acquired.
- comparable permanent magnet properties can be achieved for this new material group as for the known AlNiCo permanent magnets.
- the cause of the magnetic hardening of the alloys is a spinodal separation of the ferritic starting structure into a strongly ferromagnetic Fe-Co-rich ⁇ 1 phase and a non-magnetic or only weakly magnetic Cr-rich ⁇ 2 phase, which is caused by a hardening treatment at temperatures below 650 ° C is set.
- the good ductility of the iron-chromium-cobalt alloys before the hardening treatment which means that the hot and cold processing of the Material on an industrial scale in the form of tape and wire material.
- the warm and cold ductility of the alloys is limited by the tendency of the alloy to form the ⁇ phase, which causes the material to become brittle.
- spinodal segregation which starts with slow cooling from the hot rolling temperature, must also be avoided, which, in addition to magnetic hardening, also causes mechanical hardening.
- the alloys must therefore be cooled, which causes considerable manufacturing outlay, particularly in the case of larger processing units.
- the material is cast in block casting after melting.
- the subsequent hot forming by hot rolling or forging must be carried out at a sufficiently high temperature above the area of existence of the ⁇ phase, which limits the temperature range for the hot forming.
- the temperature of the ⁇ phase formation essentially depends on the alloy composition, whereby the ⁇ phase formation shifts to higher temperatures with increasing chromium content.
- the hot-worked material must be cooled immediately from the hot working process or from a subsequent solution treatment. This is achieved, for example, by quenching the material in water from temperatures above 1000 ° C.
- the material can then be processed to the desired final dimensions by cold processing such as rolling to tape or drawing to wire.
- the invention has for its object to provide thin strips, wires or filaments made of magnetic alloys of the iron-chromium-cobalt type which, after a suitable heat treatment, have improved mechanical and favorable magnetic properties.
- the solution to this problem according to the invention consists in the use of an iron-chromium-cobalt-type alloy quenched with a cooling rate of about 103 to 106 K / s of 10 to 45% chromium, 3 to 35% cobalt, the rest iron including unavoidable impurities, which has a microcrystalline structure practically free of ⁇ and / or ⁇ phase precipitations, as a magnetically hard or semi-hard material in the form of a strip, wire or filament.
- the cooling rate of about 103 to 106 K / s is achieved by bringing alloys in the liquid state into contact with one or more effective heat sinks using the known methods of rapid solidification technology (eg Journal of Metals (1984) 20).
- the rapidly solidified product takes the form of tapes (one or two-roll casting process) or wires (Taylor process) or filaments (melt extraction process). All these rapidly solidified products have in common that they are extremely thin in at least one dimension and have a microcrystalline structure which essentially contains only the ⁇ phase. Due to the rapid solidification, the proportion of precipitates in the ⁇ and ⁇ phase can practically be avoided in comparison to conventionally produced and solution-annealed materials of the same composition.
- the iron-chromium-cobalt-based alloys to be used according to the invention is, in particular, the extensive avoidance of the ⁇ and ⁇ phase precipitations responsible for unfavorable magnetic properties or for embrittlement.
- the rapidly solidified end product, strip, wire or filament can be produced in a one-step process, avoiding the costly process steps of hot forming and solution annealing.
- the alloy to be used is given a microcrystalline structure without complex cold forming.
- the magnetic optimization of the alloy takes place by spinodal segregation by means of heat treatment measures known per se, which are expediently carried out in a magnetic field.
- Figure 1 shows a longitudinal section of a light micrograph of the casting structure of an alloy of 29.5% chromium and 23% cobalt, the rest essentially iron.
- FIG. 2 shows a transmission electron microscope (TEM) image of typical grain boundaries of the cast structure of an alloy made of 29.5% chromium, 23% cobalt, the rest essentially iron (magnification 21,000: 1).
- TEM transmission electron microscope
- FIG. 3 shows a TEM image of the segregation structure of an alloy made of 29.5% chromium, 23% cobalt, the rest essentially iron, after a gradual magnetic heat treatment in the temperature range from 550 to 650 ° C. (magnification 95,000: 1).
- the structure of the rapidly solidified strip essentially shows stem crystallization, the mean grain diameter being 5 ⁇ m. An excretion of the magnetically unfavorable ⁇ phase could not be observed. A finely crystalline structure that is practically free of ⁇ -precipitates would only be achievable in the conventional manufacturing process by expensive solution annealing and subsequent cold working.
- the rapidly solidified strip was subjected to a conventional heat treatment at temperatures below 650 ° C. for magnetic curing. Additional investigations of the structure of the heat-treated tapes showed that the material is completely spinodal segregated. Exceptions of ⁇ phase could only be found on the grain boundaries in very isolated cases. However, the volume fraction of the ⁇ phase precipitates was below 1%.
- the magnetically hardened state was adjusted by a multi-stage final heat treatment in the temperature range from 550 to 650 ° C.
- the ⁇ phase is spinodal separated into an ⁇ 1 and ⁇ 2 phase.
- this segregation structure is shown in a TEM image.
- the thin magnetic material strips produced with the single-roll process have a thickness of 20 to 300 ⁇ m and a microcrystalline structure with an average grain diameter of 1 to 50 ⁇ m.
- the magnetic material to be used according to the invention can preferably be used wherever, in particular, broad strips of magnetic alloys of the iron-chromium-cobalt type are required, for example for the production of shadow masks for picture tubes.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Continuous Casting (AREA)
- Soft Magnetic Materials (AREA)
- Hard Magnetic Materials (AREA)
- Springs (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3611342 | 1986-04-04 | ||
| DE19863611342 DE3611342A1 (de) | 1986-04-04 | 1986-04-04 | Verwendung einer rasch abgeschreckten legierung auf eisen-chrom-kobalt-basis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0239838A1 true EP0239838A1 (fr) | 1987-10-07 |
| EP0239838B1 EP0239838B1 (fr) | 1991-02-27 |
Family
ID=6297945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19870103341 Expired - Lifetime EP0239838B1 (fr) | 1986-04-04 | 1987-03-09 | Application d'un alliage trempé rapidement à base de fer, de chrome et de cobalt |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0239838B1 (fr) |
| JP (1) | JPS6324047A (fr) |
| DE (2) | DE3611342A1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0634759A2 (fr) * | 1993-07-14 | 1995-01-18 | Vacuumschmelze Gmbh | Alliage à base de fer semi-dur et déformable pour aimant permanent |
| EP1087028A1 (fr) * | 1999-09-24 | 2001-03-28 | Japan as represented by Director General of National Research Institute for Metals | Acier ferritique à haute teneur en chrome, résistant aux températures élevées |
| US7942981B2 (en) | 2003-06-13 | 2011-05-17 | Vacuumschmelze Gmbh & Co. Kg | Rotationally symmetrical hollow body made of a deformable permanently magnetic alloy and its use and production process |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19611461C2 (de) * | 1996-03-22 | 1999-05-12 | Dresden Ev Inst Festkoerper | Verwendung einer Eisen-Chrom-Kobalt-Basis-Legierung |
| DE10206544B4 (de) * | 2002-02-16 | 2017-11-30 | Dr. Johannes Heidenhain Gmbh | Getriebe sowie mit diesem Getriebe ausgestatteter Drehgeber |
| DE102009043462A1 (de) | 2009-09-30 | 2011-03-31 | Vacuumschmelze Gmbh & Co. Kg | Magnetischer Streifen, Sensor aufweisend einen magnetischen Streifen und Verfahren zur Herstellung eines magnetischen Streifens |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1084033B (de) * | 1955-08-31 | 1960-06-23 | Beteiligungs & Patentverw Gmbh | Verfahren zur Herstellung von dauermagnetischen Halbzeugen aus teilweise austenitischen Eisen-Kobalt-Legierungen mit Zusatz mindestens eines weiteren Metalls |
| EP0024686A2 (fr) * | 1979-08-24 | 1981-03-11 | Western Electric Company, Incorporated | Article comprenant un composant magnétique consistant essentiellement en un alliage de Fe-Cr-Co |
| EP0049141A2 (fr) * | 1980-09-29 | 1982-04-07 | Inoue-Japax Research Incorporated | Alliage (dur ou demi-dur) magnétique à base de fer-chrome du type à décomposition spinodale |
| DE3334369C1 (de) * | 1983-09-23 | 1984-07-12 | Thyssen Edelstahlwerke AG, 4000 Düsseldorf | Dauermagnetlegierung |
| US4475961A (en) * | 1980-01-30 | 1984-10-09 | At&T Bell Laboratories | High remanence iron-manganese alloys for magnetically actuated devices |
| US4496402A (en) * | 1981-03-10 | 1985-01-29 | Sumitomo Special Metals Co., Ltd. | Fe-Cr-Co Type magnet body of columnar structure and method for the preparation of same |
-
1986
- 1986-04-04 DE DE19863611342 patent/DE3611342A1/de not_active Withdrawn
-
1987
- 1987-03-09 EP EP19870103341 patent/EP0239838B1/fr not_active Expired - Lifetime
- 1987-03-09 DE DE8787103341T patent/DE3768113D1/de not_active Expired - Lifetime
- 1987-03-24 JP JP7132587A patent/JPS6324047A/ja active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1084033B (de) * | 1955-08-31 | 1960-06-23 | Beteiligungs & Patentverw Gmbh | Verfahren zur Herstellung von dauermagnetischen Halbzeugen aus teilweise austenitischen Eisen-Kobalt-Legierungen mit Zusatz mindestens eines weiteren Metalls |
| EP0024686A2 (fr) * | 1979-08-24 | 1981-03-11 | Western Electric Company, Incorporated | Article comprenant un composant magnétique consistant essentiellement en un alliage de Fe-Cr-Co |
| US4475961A (en) * | 1980-01-30 | 1984-10-09 | At&T Bell Laboratories | High remanence iron-manganese alloys for magnetically actuated devices |
| EP0049141A2 (fr) * | 1980-09-29 | 1982-04-07 | Inoue-Japax Research Incorporated | Alliage (dur ou demi-dur) magnétique à base de fer-chrome du type à décomposition spinodale |
| US4496402A (en) * | 1981-03-10 | 1985-01-29 | Sumitomo Special Metals Co., Ltd. | Fe-Cr-Co Type magnet body of columnar structure and method for the preparation of same |
| DE3334369C1 (de) * | 1983-09-23 | 1984-07-12 | Thyssen Edelstahlwerke AG, 4000 Düsseldorf | Dauermagnetlegierung |
| GB2147006A (en) * | 1983-09-23 | 1985-05-01 | Thyssen Edelstahlwerke Ag | Permanent magnets and alloy therefor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0634759A2 (fr) * | 1993-07-14 | 1995-01-18 | Vacuumschmelze Gmbh | Alliage à base de fer semi-dur et déformable pour aimant permanent |
| EP0634759A3 (en) * | 1993-07-14 | 1995-02-22 | Vacuumschmelze Gmbh | Semi-hard and deformable iron based permanent magnet alloy. |
| EP1087028A1 (fr) * | 1999-09-24 | 2001-03-28 | Japan as represented by Director General of National Research Institute for Metals | Acier ferritique à haute teneur en chrome, résistant aux températures élevées |
| KR100561605B1 (ko) * | 1999-09-24 | 2006-03-16 | 카가쿠기쥬쯔죠 킨조쿠자이료 기쥬쯔켄큐쇼죠가 대표하는 일본국 | 고크롬 함유 페라이트계 내열강 |
| US7942981B2 (en) | 2003-06-13 | 2011-05-17 | Vacuumschmelze Gmbh & Co. Kg | Rotationally symmetrical hollow body made of a deformable permanently magnetic alloy and its use and production process |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3611342A1 (de) | 1987-10-08 |
| DE3768113D1 (de) | 1991-04-04 |
| EP0239838B1 (fr) | 1991-02-27 |
| JPS6324047A (ja) | 1988-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0021101B1 (fr) | Alliage amorphe magnétiquement doux | |
| DE69610156T2 (de) | Glasartige Eisenlegierungen, mit einer grossen supergekühlter Temperaturspanne | |
| DE69213314T2 (de) | Verfahren zur Herstellung von hochfestem Draht aus einer Legierung | |
| DE69208528T2 (de) | Verfahren zur Formgebung von amorphen metallischen Werkstoffen | |
| DE2462118C2 (de) | Barren aus einer Aluminium-Eisen-Legierung | |
| DE2165052B2 (de) | Verwendung einer legierung auf eisen-chrom-kobalt-basis zur herstellung von dauermagneten | |
| EP2812456B1 (fr) | Procédé pour produire une tôle magnétique utilisant un feuillard d'acier laminé à chaud | |
| DE69414054T2 (de) | Verfahren zur Herstellung von amorphen Bändern | |
| DE3852313T2 (de) | Verfahren zur herstellung von nichtorientiertem stahlblech mit hohem siliziumgehalt. | |
| EP1475450B1 (fr) | Alliage Fe-Co-V magnétique doux à haute résistance mécanique. | |
| DE19807048C2 (de) | Verfahren zur Herstellung von Legierungsgläsern | |
| DE102014100589A1 (de) | Weichmagnetische Legierung auf Eisen-Kobalt-Basis sowie Verfahren zu deren Herstellung | |
| EP3444370A1 (fr) | Alliage à base de cuivre destiné à la fabrication de verres métalliques solidifiés | |
| EP0239838B1 (fr) | Application d'un alliage trempé rapidement à base de fer, de chrome et de cobalt | |
| DE2246427A1 (de) | Legierung mit hoher permeabilitaet und haerte fuer magnetische aufnahme- und reproduktionskoepfe sowie verfahren zu ihrer herstellung | |
| DE19928764B4 (de) | Eisen-Kobalt-Legierung mit geringer Koerzitivfeldstärke und Verfahren zur Herstellung von Halbzeug aus einer Eisen-Kobalt-Legierung | |
| DE19711490A1 (de) | Amorphe Legierung auf Fe-Basis | |
| DE102016222805A1 (de) | Halbzeug und Verfahren zum Herstellen einer CoFe-Legierung | |
| DE2928059C2 (fr) | ||
| DE69801702T2 (de) | Aluminium-Legierung und Verfahren zu ihrer Herstellung | |
| DE1483261B1 (de) | Verfahren zur Herstellung von ternaeren Mangan-Aluminium-Kohlenstoff-Legierungen fuer Dauermagnete | |
| DE2029962A1 (de) | Nickel-Legierung | |
| DE3915572A1 (de) | Ferromagnetische ni-fe-legierung und verfahren zur herstellung einer bramme hervorragender oberflaechenqualitaet aus der betreffenden legierung | |
| DE69317489T2 (de) | Verfahren zur Herstellung von weich-magnetischen Legierungen hoher permeabilität und Legierungen | |
| DE2913071A1 (de) | Magnetlegierung auf eisen-chrom- kobalt-basis mit spinodaler zersetzung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT NL |
|
| 17P | Request for examination filed |
Effective date: 19880113 |
|
| 17Q | First examination report despatched |
Effective date: 19900504 |
|
| ITF | It: translation for a ep patent filed | ||
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT NL |
|
| ET | Fr: translation filed | ||
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
| REF | Corresponds to: |
Ref document number: 3768113 Country of ref document: DE Date of ref document: 19910404 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19940210 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19940330 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19940331 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19940511 Year of fee payment: 8 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19950309 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19951001 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19950309 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19951130 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19951001 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19951201 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050309 |