EP0784100B1 - Alliage fer-cobalt, procédé de fabrication d'une bande en alliage fercobalt et bande obtenue - Google Patents
Alliage fer-cobalt, procédé de fabrication d'une bande en alliage fercobalt et bande obtenue Download PDFInfo
- Publication number
- EP0784100B1 EP0784100B1 EP97400024A EP97400024A EP0784100B1 EP 0784100 B1 EP0784100 B1 EP 0784100B1 EP 97400024 A EP97400024 A EP 97400024A EP 97400024 A EP97400024 A EP 97400024A EP 0784100 B1 EP0784100 B1 EP 0784100B1
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- EP
- European Patent Office
- Prior art keywords
- alloy
- strip
- iron
- heat treatment
- alloy according
- 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.)
- Expired - Lifetime
Links
- 229910000531 Co alloy Inorganic materials 0.000 title claims description 9
- QVYYOKWPCQYKEY-UHFFFAOYSA-N [Fe].[Co] Chemical compound [Fe].[Co] QVYYOKWPCQYKEY-UHFFFAOYSA-N 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 41
- 239000000956 alloy Substances 0.000 claims description 41
- 238000010438 heat treatment Methods 0.000 claims description 22
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 17
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- 239000010703 silicon Substances 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 229910052720 vanadium Inorganic materials 0.000 claims description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052732 germanium Inorganic materials 0.000 claims description 5
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 235000012254 magnesium hydroxide Nutrition 0.000 claims description 3
- CRGZYKWWYNQGEC-UHFFFAOYSA-N magnesium;methanolate Chemical compound [Mg+2].[O-]C.[O-]C CRGZYKWWYNQGEC-UHFFFAOYSA-N 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 239000002966 varnish Substances 0.000 claims description 3
- 238000005272 metallurgy Methods 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 claims 3
- 238000000034 method Methods 0.000 claims 3
- 239000013067 intermediate product Substances 0.000 claims 2
- 239000005864 Sulphur Substances 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 10
- 239000010941 cobalt Substances 0.000 description 9
- 229910017052 cobalt Inorganic materials 0.000 description 9
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 9
- 239000011265 semifinished product Substances 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910017061 Fe Co Inorganic materials 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- LDFJQWGCLSAONS-UHFFFAOYSA-N [Si][Co][Fe] Chemical compound [Si][Co][Fe] LDFJQWGCLSAONS-UHFFFAOYSA-N 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
Definitions
- the present invention relates to an Iron-Cobalt alloy for the manufacture of magnetic circuits for electrotechnical machines.
- electrotechnical machines such as electric motors, transformers or relays have built-in magnetic circuits of stacks of parts cut from alloy strips, the magnetic properties are suitable. These properties should be all the more better than machines with high specific energy, which is the case, for example, for machines on board vehicles such as planes or high speed trains. Indeed, for these applications it is necessary to minimize the weight of the equipment, which involves an increase in specific energy, i.e. power per unit massive.
- the magnetic circuits of machines with high specific energy are often made of Iron-Cobalt alloy whose chemical composition includes, by weight, about 50% cobalt and 2% vanadium, the balance being iron and impurities.
- Iron-Cobalt alloy whose chemical composition includes, by weight, about 50% cobalt and 2% vanadium, the balance being iron and impurities.
- these alloys have several disadvantages because that they all have an ⁇ / ⁇ phase transformation which limits very notably the possibilities of action on the magnetic properties by heat treatment.
- these alloys generally have a resistivity electric too weak and are too expensive.
- the object of the present invention is to remedy these drawbacks by proposing an alloy of the Iron-Cobalt type having magnetic properties close to those of known alloys, but with a higher cobalt content low, so as to be less expensive than existing alloys, and which can be cold rolled.
- the impurities resulting from the preparation can be, in particular, elements such as chromium, titanium, germanium, vanadium and molybdenum, and elements like carbon, oxygen, nitrogen, sulfur and phosphorus.
- the chemical composition checks one or more more than one of the following relationships: 10% ⁇ Co ⁇ 35%, Si ⁇ 2.5% or Al ⁇ 1.5% or Si + Al ⁇ 1.5%.
- the coating with an insulating layer can be obtained by covering the strip, or, after the heat treatment, of at least one layer of varnish mineral or organic, i.e., before the heat treatment, at least one layer of magnesium methylate.
- the coating with an insulating layer can be obtained by applying to the band a milk of magnesia, before the heat treatment.
- the invention relates to a strip of an alloy according to the invention, coated with at least one electrically insulating layer, preferably having a cubic texture (100) [001] or a texture (110) [001], as well as its use for manufacturing a magnetic circuit of a machine electrical engineering.
- the inventors have found in a new way that by adding aluminum to an Iron-Cobalt alloy possibly containing silicon, we significantly increased the resistivity of the alloy without dropping too much the saturation magnetization, and, that by choosing the content of this element taking into account the possible silicon content, we could remove the ⁇ / ⁇ phase transformation while obtaining a material sufficiently ductile to be suitable for cold rolling.
- This provides a strip whose magnetic properties can be improved by a heat treatment and by obtaining a favorable texture.
- the impurities resulting from processing are, in particular, elements such as chromium, titanium, germanium, vanadium and molybdenum which can be tolerated provided the sum of their contents remains less than 0.5%.
- Impurities are also elements such as carbon, oxygen, nitrogen, sulfur and phosphorus whose contents must be as low as possible and preferably such that: C ⁇ 0.03%, O ⁇ 0.005 %, N ⁇ 0.003%, S ⁇ 0.003%, P ⁇ 0.003%.
- the alloy can be produced using vacuum oven or arc furnace followed by a vacuum bag treatment then cast as a semi-finished product.
- the alloy can be remelted under vacuum or under electroconductive slag.
- the alloy is cast in the form of a reflow electrode which is remelted under vacuum or under electroconductive slag to obtain the semi-finished product.
- the semi-finished product is placed still hot in a reheating oven to be brought to rolling temperature, then hot rolled to obtain a hot strip of thickness between approximately 1 mm and approximately 6 mm.
- the hot strip is then pickled and, if necessary, stretched by heating between 200 ° C and 600 ° C and finally, cold rolled (or warm when the strip is stretched) in several passes with, possibly annealing intermediate between 700 ° C and 1100 ° C, to obtain a cold strip generally between 0.05 mm and 0.5 mm thick.
- the succession of cold rolling and annealing intermediaries to obtain a cubic texture (100) [001] or a texture (110) [001] very favorable for obtaining good magnetic properties.
- intermediate annealing should preferably be made under an atmosphere of pure and dry hydrogen.
- the cold strip is then subjected to a heat treatment by heating and maintaining temperature between 850 ° C and 1200 ° C for a time between 1 hour and 10 hours and coated with at least one insulating layer electrically.
- the heat treatment which is done under atmosphere pure and dry hydrogen makes it possible to enlarge the grain which improves the magnetic properties.
- At least one electrically insulating layer may consist of a mineral or organic varnish deposited after heat treatment, or magnesium methylate deposited before heat treatment.
- At least one electrically insulating layer can be obtained by applying to the strip, before the heat treatment, a milk of magnesia. During the heat treatment, the silicon located on the surface of the tape reacts with magnesia to form an insulating glass.
- the strips thus obtained can be cut to obtain parts which, after stacking, form magnetic circuits for transformers, electric motors, relays or any other electrotechnical machine.
- alloys C to D were manufactured (chemical composition by weight in%): alloy Fe Co Yes Al VS NOT O S VS ball 15 - 1.54 0.016 0.0008 0.001 0.0005 D ball 15 - 2.4 0.027 0.0005 0.001 0.0005 E ball 15 - 3.1 0.011 0.0005 0.001 0.0005 F ball 15 0.98 1.55 0.011 0.0012 0.0013 0.0005
- alloys were produced in a vacuum oven, hot rolled then cold rolled to obtain strips of 0.2 mm thick. The strips were subjected to a heat treatment under hydrogen.
- the heat treatment conditions and the magnetic characteristics obtained were: alloy ⁇ ° C t (hours) ⁇ ( ⁇ . ⁇ .cm) B to 600Oe (G) Hc (Oe) VS 900 4 35 22100 0.5 VS 1050 4 35 22100 0.53 D 900 4 38 21200 0.53 D 1150 4 38 21200 0.4 E 900 4 40 21000 0.43 E 1150 4 40 21000 0.4 F 900 4 39.5 21500 0.4 F 1000 4 39.5 21500 0.32
- alloys according to the invention After heat treatment at 900 ° C and 1000 ° C, their characteristics were: alloy ⁇ ° C t (hours) ⁇ ( ⁇ . ⁇ .cm) B to 600Oe (G) Hc (Oe) AT 900 4 30 22500 0.58 AT 1000 4 30 22500 0.71 It can be seen that the alloys according to the invention have a higher resistivity, a lower coercive field and a magnetization comparable to that of alloy A.
- the iron-cobalt alloys according to the prior art contain more than 15% of cobalt and the characteristics of the bands in these alloys are typically: Co% ⁇ ( ⁇ . ⁇ .cm) B to 600 Oe (G) Hc (Oe) 50 40 22500 1 25 22 22500 1.5
- the alloys according to the invention have a resistivity comparable electric power, a significantly weaker coercive field and a fairly close magnetization despite a very appreciably higher cobalt content low. These results show some of the advantages of the alloy according to the invention.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Soft Magnetic Materials (AREA)
- Continuous Casting (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Description
- on élabore l'alliage soit sous vide soit au four à arc suivi d'une opération de métallurgie en poche et, éventuellement, après une première solidification, on le refond sous vide ou sous laitier électroconducteur pour obtenir un demi produit,
- on lamine à chaud le demi-produit pour obtenir une bande à chaud dont l'épaisseur est comprise entre 1 et 6 mm,
- on décape la bande à chaud et on la lamine après l'avoir éventuellement réchauffée entre 200°C et 600°C pour obtenir une bande à froid d'épaisseur comprise entre 0,05 mm et 0,5 mm,
- on effectue un traitement thermique entre 850 °C et 1200 °C pendant 1 à 10 heures et un revêtement par une couche électriquement isolante.
- de 5% à 40% et de préférence de 10% à 35% de cobalt qui est le seul élément connu améliorant l'aimantation à saturation du fer; le cobalt étant un élément très coûteux sa teneur est ajustée, pour chaque application particulière, à la teneur juste nécessaire pour obtenir les caractéristiques magnétiques souhaitées pour l'application;
- de 0,2 % à 5 % d'aluminium et de 0% à 5% de silicium pour réduire l'étendue du domaine d'existence de la phase γ ; l'aluminium présente l'avantage supplémentaire d'augmenter la résistivité électrique et de ne pas détériorer la ductilité à froid ; le silicium qui réduit également le domaine d'existence de la phase γ, présente cependant l'inconvénient de rendre difficile les opérations de laminage à froid ; de préférence, soit la teneur en aluminium est supérieure ou égale à 1,5%, soit la teneur en silicium est supérieure ou égale à 2,5%, soit la somme des teneurs en silicium et aluminium est supérieure ou égale à 1,5%, car au delà de ces valeurs, la phase γ n'existe plus, ce qui permet des traitements thermiques à haute température pour faire grossir le grain et développer une texture favorable, et ainsi, améliorer les propriétés magnétiques;
| alliage | Fe | Co | Si | Al | C | N | O | S |
| C | bal | 15 | - | 1,54 | 0,016 | 0,0008 | 0,001 | 0,0005 |
| D | bal | 15 | - | 2,4 | 0,027 | 0,0005 | 0,001 | 0,0005 |
| E | bal | 15 | - | 3,1 | 0,011 | 0,0005 | 0,001 | 0,0005 |
| F | bal | 15 | 0,98 | 1,55 | 0,011 | 0,0012 | 0,0013 | 0,0005 |
| alliage | Θ°C | t (heures) | ρ (µ.Ω.cm) | B à 600Oe (G) | Hc (Oe) |
| C | 900 | 4 | 35 | 22100 | 0,5 |
| C | 1050 | 4 | 35 | 22100 | 0,53 |
| D | 900 | 4 | 38 | 21200 | 0,53 |
| D | 1150 | 4 | 38 | 21200 | 0,4 |
| E | 900 | 4 | 40 | 21000 | 0,43 |
| E | 1150 | 4 | 40 | 21000 | 0,4 |
| F | 900 | 4 | 39,5 | 21500 | 0,4 |
| F | 1000 | 4 | 39,5 | 21500 | 0,32 |
| alliage | Fe | Co | Si | Al | C | N | O | S |
| A | bal | 15 | 0,98 | - | 0,01 | 0,0014 | 0,0027 | 0,0005 |
| alliage | Θ°C | t (heures) | ρ (µ.Ω.cm) | B à 600Oe (G) | Hc (Oe) |
| A | 900 | 4 | 30 | 22500 | 0,58 |
| A | 1000 | 4 | 30 | 22500 | 0,71 |
| Co % | ρ (µ.Ω.cm) | B à 600 Oe (G) | Hc (Oe) |
| 50 | 40 | 22500 | 1 |
| 25 | 22 | 22500 | 1,5 |
Claims (13)
- Alliage Fer-Cobalt caractérisé en ce que sa composition chimique comprend en poids:le reste étant du fer et des impuretés résultant de l'élaboration.5 % ≤ Co ≤ 40 %0 % ≤ Si ≤ 5 %0,2 % ≤ Al ≤ 5 %0,5 % ≤ Si + Al ≤ 5 %
- Alliage selon la revendication 1 caractérisé en ce que les impuretés résultant de l'élaboration que sont le carbone, l'oxygène, l'azote, le soufre et le phosphore ont des teneurs inférieures aux valeurs suivantes:C ≤ 0,03 %O ≤ 0,005 %N ≤ 0,003 %S ≤ 0,003 %P ≤ 0,003 %
- Alliage selon la revendication 1 ou la revendication 2 caractérisé en ce que les impuretés résultant de l'élaboration que sont le chrome, le titane, le germanium, le vanadium et le molybdène ont des teneurs dont la somme est inférieure à 0,5%.
- Alliage selon l'une quelconque des revendications 1 à 3 caractérisé en ce que:
10 % ≤ Co ≤ 35 % - Alliage selon l'une quelconque des revendications 1 à 4 caractérisé en ce que:
Si ≥ 2,5 % - Alliage selon l'une quelconque des revendications 1 à 4 caractérisé en ce que:
Al ≥ 1,5 % - Alliage selon l'une quelconque des revendications 1 à 4 caractérisé en ce que:
Si + Al ≥ 1,5 % - Procédé de fabrication d'une bande en un alliage selon l'une quelconque des revendications 1 à 5 caractérisé en ce que:on élabore l'alliage soit sous vide soit au four à arc suivi d'une opération de métallurgie en poche et, éventuellement, après une première solidification, on le refond sous vide ou sous laitier éléctroconducteur pour obtenir un demi produit,on lamine à chaud le demi-produit pour obtenir une bande à chaud dont l'épaisseur est comprise entre 1 et 6 mm,on décape la bande à chaud, éventuellement on la réchauffe entre 200 °C et 600 °C, et on la lamine pour obtenir une bande à froid d'épaisseur comprise entre 0,05 mm et 0,5 mm,on effectue un traitement thermique entre 850 °C et 1200 °C pendant 1 à 10 heures et un revêtement par une couche isolante.
- Procédé selon la revendication 8 caractérisé en ce que le revêtement par une couche isolante est obtenu en recouvrant la bande, soit, après le traitement thermique, d'au moins une couche de vernis minéral ou organique, soit, avant le traitement thermique, d'au moins une couche de méthylate de magnésium.
- Procédé selon la revendication 8 caractérisé en ce que, lorsque la teneur en silicium de l'alliage est supérieure à 2 %, le revêtement par une couche isolante est obtenu en appliquant sur la bande un lait de magnésie, avant le traitement thermique.
- Bande en un alliage selon l'une quelconque des revendications 1 à 7.
- Bande selon la revendication 11 caractérisée en ce qu'elle présente une texture cubique (100) [001] ou une texture (110) [001].
- Bande selon la revendication 11 ou la revendication 12 caractérisée en ce qu'elle est revêtue d'au moins une couche isolante électriquement.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9600232 | 1996-01-11 | ||
| FR9600232A FR2743572B1 (fr) | 1996-01-11 | 1996-01-11 | Alliage fer-cobalt, procede de fabrication d'une bande en alliage fer-cobalt et bande obtenue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0784100A1 EP0784100A1 (fr) | 1997-07-16 |
| EP0784100B1 true EP0784100B1 (fr) | 2001-03-28 |
Family
ID=9488022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97400024A Expired - Lifetime EP0784100B1 (fr) | 1996-01-11 | 1997-01-08 | Alliage fer-cobalt, procédé de fabrication d'une bande en alliage fercobalt et bande obtenue |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5919319A (fr) |
| EP (1) | EP0784100B1 (fr) |
| JP (1) | JPH09195010A (fr) |
| AT (1) | ATE200112T1 (fr) |
| DE (1) | DE69704381T2 (fr) |
| FR (1) | FR2743572B1 (fr) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6855240B2 (en) * | 2000-08-09 | 2005-02-15 | Hitachi Global Storage Technologies Netherlands B.V. | CoFe alloy film and process of making same |
| US20080035245A1 (en) * | 2006-08-09 | 2008-02-14 | Luana Emiliana Iorio | Soft magnetic material and systems therewith |
| US20100201469A1 (en) * | 2006-08-09 | 2010-08-12 | General Electric Company | Soft magnetic material and systems therewith |
| KR101376507B1 (ko) * | 2012-02-22 | 2014-03-21 | 포항공과대학교 산학협력단 | Fe-Co계 합금 판재의 집합조직 형성 방법 및 이를 이용하여 제조된 연자성 강판 |
| EP3004408B1 (fr) | 2013-06-07 | 2017-08-09 | VDM Metals International GmbH | Procédé de production d'une feuille de métal |
| US10676808B2 (en) * | 2013-06-07 | 2020-06-09 | VDM Metals GmbH | Method for producing a metal film |
| DE102014213794A1 (de) | 2014-07-16 | 2016-01-21 | Robert Bosch Gmbh | Weichmagnetische Legierungszusammensetzung und Verfahren zum Herstellen einer solchen |
| US10454352B1 (en) | 2016-05-02 | 2019-10-22 | Williams International Co., L.L.C. | Method of producing a laminated magnetic core |
| CN115279926B (zh) * | 2020-03-10 | 2024-09-10 | 株式会社博迈立铖 | Fe-Co系合金棒材的制造方法及Fe-Co系合金棒材 |
| JP7641488B2 (ja) * | 2020-07-08 | 2025-03-07 | 大同特殊鋼株式会社 | 軟磁性部材及びその製造方法、軟磁性部材用合金板材 |
| EP3957757B1 (fr) * | 2020-08-18 | 2023-03-01 | Vacuumschmelze GmbH & Co. KG | Procédé de production d'une bande et d'un feuilletage d'alliage cofe |
| JP7736074B2 (ja) * | 2021-08-30 | 2025-09-09 | 株式会社プロテリアル | 被覆部材の製造方法および被覆部材 |
| CN116457479B (zh) * | 2021-09-14 | 2025-05-27 | 株式会社博迈立铖 | Fe-Co系合金棒材 |
| CN116507745B (zh) * | 2021-09-14 | 2025-06-06 | 株式会社博迈立铖 | Fe-Co系合金棒材 |
| WO2024185627A1 (fr) * | 2023-03-03 | 2024-09-12 | 株式会社プロテリアル | Substrat en alliage à base d'un système fe-co et son procédé de production, substrat revêtu d'un alliage à base d'un système fe-co et son procédé de production, et élément de noyau multicouche |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE705516C (de) * | 1933-10-13 | 1941-05-02 | Fried Krupp Akt Ges | Herstellung von Dynamo- und Transformatorenblechen und aehnlich magnetisch beanspruchten Gegenstaenden |
| US4059462A (en) * | 1974-12-26 | 1977-11-22 | The Foundation: The Research Institute Of Electric And Magnetic Alloys | Niobium-iron rectangular hysteresis magnetic alloy |
| JP2615543B2 (ja) * | 1985-05-04 | 1997-05-28 | 大同特殊鋼株式会社 | 軟質磁性材料 |
| JPH0689366B2 (ja) * | 1986-05-01 | 1994-11-09 | 株式会社神戸製鋼所 | 電磁クラツチ用磁性粉体 |
| JPS63233507A (ja) * | 1987-03-20 | 1988-09-29 | Kobe Steel Ltd | 電磁クラツチ用磁性粉体 |
| JPH0715121B2 (ja) * | 1988-08-20 | 1995-02-22 | 川崎製鉄株式会社 | 射出成形用Fe―Co系合金微粉およびFe―Co系焼結磁性材料 |
| JPH04259355A (ja) * | 1991-02-14 | 1992-09-14 | Hitachi Metal Precision Ltd | 靭性、比抵抗および飽和磁束密度の高い鋳造用Fe−Co系磁性合金 |
| JPH0633199A (ja) * | 1992-07-16 | 1994-02-08 | Hitachi Metal Precision Ltd | プリンタヘッド用ヨークコア |
| US5425912A (en) * | 1994-07-07 | 1995-06-20 | Inco Alloys International, Inc. | Low expansion superalloy with improved toughness |
-
1996
- 1996-01-11 FR FR9600232A patent/FR2743572B1/fr not_active Expired - Fee Related
-
1997
- 1997-01-08 DE DE69704381T patent/DE69704381T2/de not_active Expired - Fee Related
- 1997-01-08 EP EP97400024A patent/EP0784100B1/fr not_active Expired - Lifetime
- 1997-01-08 AT AT97400024T patent/ATE200112T1/de not_active IP Right Cessation
- 1997-01-10 JP JP9014518A patent/JPH09195010A/ja not_active Withdrawn
- 1997-01-13 US US08/782,948 patent/US5919319A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FR2743572A1 (fr) | 1997-07-18 |
| EP0784100A1 (fr) | 1997-07-16 |
| ATE200112T1 (de) | 2001-04-15 |
| DE69704381D1 (de) | 2001-05-03 |
| FR2743572B1 (fr) | 1998-02-13 |
| US5919319A (en) | 1999-07-06 |
| DE69704381T2 (de) | 2001-10-11 |
| JPH09195010A (ja) | 1997-07-29 |
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