CA2219503C - Fluides aimantes a aimantation a saturation elevee - Google Patents
Fluides aimantes a aimantation a saturation elevee Download PDFInfo
- Publication number
- CA2219503C CA2219503C CA002219503A CA2219503A CA2219503C CA 2219503 C CA2219503 C CA 2219503C CA 002219503 A CA002219503 A CA 002219503A CA 2219503 A CA2219503 A CA 2219503A CA 2219503 C CA2219503 C CA 2219503C
- Authority
- CA
- Canada
- Prior art keywords
- magnetofluid
- particles
- modified
- volume
- concentration
- 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 - Fee Related
Links
- 239000002245 particle Substances 0.000 claims abstract description 45
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 9
- 239000010941 cobalt Substances 0.000 claims abstract description 9
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000001179 sorption measurement Methods 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000004094 surface-active agent Substances 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000000693 micelle Substances 0.000 claims description 7
- 230000010287 polarization Effects 0.000 claims description 6
- 238000001149 thermolysis Methods 0.000 claims description 6
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 claims 1
- 229920000642 polymer Polymers 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 230000005291 magnetic effect Effects 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 229940105305 carbon monoxide Drugs 0.000 description 2
- 230000009850 completed effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 239000013528 metallic particle Substances 0.000 description 2
- 229910017464 nitrogen compound Inorganic materials 0.000 description 2
- 150000002830 nitrogen compounds Chemical class 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VUMCUSHVMYIRMB-UHFFFAOYSA-N 1,3,5-tri(propan-2-yl)benzene Chemical compound CC(C)C1=CC(C(C)C)=CC(C(C)C)=C1 VUMCUSHVMYIRMB-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical group C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- MQIKJSYMMJWAMP-UHFFFAOYSA-N dicobalt octacarbonyl Chemical group [Co+2].[Co+2].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-] MQIKJSYMMJWAMP-UHFFFAOYSA-N 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 150000003385 sodium Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229960002317 succinimide Drugs 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
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
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
- H01F1/442—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a metal or alloy, e.g. Fe
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/90—Details not provided for in groups A61M60/40, A61M60/50 or A61M60/80
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Power Engineering (AREA)
- Hematology (AREA)
- General Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Mechanical Engineering (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Soft Magnetic Materials (AREA)
- Lubricants (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Hard Magnetic Materials (AREA)
Abstract
L'invention vise à créer un fluide magnétique présentant une aimantation à saturation élevée, dont la concentration de saturation est supérieure à 100 mT afin de permettre le transfert de forces supérieures. A cet effet, on forme des dispersions stables de particules nanométriques et de cobalt modifiées par des couches d'adsorption monomoléculaires, dans des fluides de support, la concentration volumique des composants ferromagnétiques étant comprise entre 5 et 35 %, de préférence entre 15 et 30 %, et la concentration volumique des particules modifiées (particules nues avec enrobage d'adsorption) atteignant jusqu'à 50 % en volume.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19609281A DE19609281C1 (de) | 1996-02-27 | 1996-02-27 | Magnetofluidunterstützter elektromagnetischer Antrieb für eine Blutpumpe zur Unterstützung oder zum teilweisen bis totalen Ersatz des Herzens |
| DE19654864A DE19654864A1 (de) | 1996-02-27 | 1996-02-27 | Magnetofluid mit einer Sättigungsmagnetisierung von 150 bis 450 mT |
| DE19609281.7 | 1996-02-27 | ||
| DE19654864.0 | 1997-02-27 | ||
| PCT/DE1997/000443 WO1997032321A1 (fr) | 1996-02-27 | 1997-02-27 | Fluide magnetique presentant une aimantation a saturation elevee |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2219503A1 CA2219503A1 (fr) | 1997-09-04 |
| CA2219503C true CA2219503C (fr) | 2001-04-24 |
Family
ID=26023644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002219503A Expired - Fee Related CA2219503C (fr) | 1996-02-27 | 1997-02-27 | Fluides aimantes a aimantation a saturation elevee |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0823123A1 (fr) |
| CA (1) | CA2219503C (fr) |
| WO (1) | WO1997032321A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230081426A (ko) * | 2021-11-30 | 2023-06-07 | 현대자동차주식회사 | 유도모터의 엔드 코일 냉각구조 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3284358A (en) * | 1963-06-10 | 1966-11-08 | Chevron Res | Process for improving the magnetic properties of colloidal dispersion of magnetic particles |
| JPS6043803A (ja) * | 1983-08-19 | 1985-03-08 | Pioneer Electronic Corp | 磁性流体 |
| JPS6293911A (ja) * | 1985-10-21 | 1987-04-30 | Natl Res Inst For Metals | 磁性流体の製造装置 |
| JPS6293910A (ja) * | 1985-10-21 | 1987-04-30 | Natl Res Inst For Metals | 磁性流体の製造方法 |
| JP2623500B2 (ja) * | 1988-04-02 | 1997-06-25 | コスモ石油株式会社 | 磁性流体の製造方法 |
-
1997
- 1997-02-27 WO PCT/DE1997/000443 patent/WO1997032321A1/fr not_active Ceased
- 1997-02-27 EP EP97918008A patent/EP0823123A1/fr not_active Withdrawn
- 1997-02-27 CA CA002219503A patent/CA2219503C/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997032321A1 (fr) | 1997-09-04 |
| CA2219503A1 (fr) | 1997-09-04 |
| EP0823123A1 (fr) | 1998-02-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |