DE2558036C3 - Beschichtetes, oxidierbares Metallpulver, dessen Herstellung und Verwendung - Google Patents
Beschichtetes, oxidierbares Metallpulver, dessen Herstellung und VerwendungInfo
- Publication number
- DE2558036C3 DE2558036C3 DE2558036A DE2558036A DE2558036C3 DE 2558036 C3 DE2558036 C3 DE 2558036C3 DE 2558036 A DE2558036 A DE 2558036A DE 2558036 A DE2558036 A DE 2558036A DE 2558036 C3 DE2558036 C3 DE 2558036C3
- Authority
- DE
- Germany
- Prior art keywords
- metal powder
- organic compound
- particles
- powder according
- organic
- 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
Links
- 239000000843 powder Substances 0.000 title claims description 27
- 229910052751 metal Inorganic materials 0.000 title claims description 20
- 239000002184 metal Substances 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000002245 particle Substances 0.000 claims description 30
- 150000001875 compounds Chemical class 0.000 claims description 18
- 150000002894 organic compounds Chemical class 0.000 claims description 8
- 125000001424 substituent group Chemical group 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 230000005291 magnetic effect Effects 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 3
- 150000002513 isocyanates Chemical class 0.000 claims description 3
- 150000002540 isothiocyanates Chemical class 0.000 claims description 3
- GJNDMSSZEBNLPU-UHFFFAOYSA-N octadecylurea Chemical compound CCCCCCCCCCCCCCCCCCNC(N)=O GJNDMSSZEBNLPU-UHFFFAOYSA-N 0.000 claims description 3
- 150000003585 thioureas Chemical class 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 2
- MUMPVFSPTOSJCO-UHFFFAOYSA-N octadecylthiourea Chemical compound CCCCCCCCCCCCCCCCCCNC(N)=S MUMPVFSPTOSJCO-UHFFFAOYSA-N 0.000 claims description 2
- ZVFTWKBRNQSRLB-UHFFFAOYSA-N 1,3-diheptylthiourea Chemical compound CCCCCCCNC(=S)NCCCCCCC ZVFTWKBRNQSRLB-UHFFFAOYSA-N 0.000 claims 1
- YIPGJIPRXFGTCH-UHFFFAOYSA-N 1,3-diheptylurea Chemical compound CCCCCCCNC(=O)NCCCCCCC YIPGJIPRXFGTCH-UHFFFAOYSA-N 0.000 claims 1
- FLVIGYVXZHLUHP-UHFFFAOYSA-N N,N'-diethylthiourea Chemical compound CCNC(=S)NCC FLVIGYVXZHLUHP-UHFFFAOYSA-N 0.000 claims 1
- UMGDCJDMYOKAJW-UHFFFAOYSA-N aminothiocarboxamide Natural products NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims 1
- 239000003302 ferromagnetic material Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 239000002344 surface layer Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 12
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 230000032683 aging Effects 0.000 description 6
- 230000005415 magnetization Effects 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 235000013877 carbamide Nutrition 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- -1 Octadecylthiourea Octadecyl isothiocyanate Chemical compound 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013528 metallic particle Substances 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 150000003672 ureas Chemical class 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- VJIRSSFEIRFISD-UHFFFAOYSA-N 1-isothiocyanatooctadecane Chemical compound CCCCCCCCCCCCCCCCCCN=C=S VJIRSSFEIRFISD-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/147—Nitrogen-containing compounds containing a nitrogen-to-oxygen bond
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/145—Amides; N-substituted amides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/16—Sulfur-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/16—Sulfur-containing compounds
- C23F11/162—Thioaldehydes; Thioketones
-
- 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
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/061—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder with a protective layer
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Paints Or Removers (AREA)
- Soft Magnetic Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Chemical Treatment Of Metals (AREA)
- Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/536,377 US3964939A (en) | 1974-12-26 | 1974-12-26 | Bodies including passivated metal particles |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2558036A1 DE2558036A1 (de) | 1976-07-08 |
| DE2558036B2 DE2558036B2 (de) | 1979-02-01 |
| DE2558036C3 true DE2558036C3 (de) | 1979-09-20 |
Family
ID=24138239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2558036A Expired DE2558036C3 (de) | 1974-12-26 | 1975-12-22 | Beschichtetes, oxidierbares Metallpulver, dessen Herstellung und Verwendung |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US3964939A (OSRAM) |
| JP (1) | JPS5635721B2 (OSRAM) |
| AU (1) | AU503481B2 (OSRAM) |
| BR (1) | BR7508472A (OSRAM) |
| CA (1) | CA1065696A (OSRAM) |
| CH (1) | CH602933A5 (OSRAM) |
| DE (1) | DE2558036C3 (OSRAM) |
| DK (1) | DK157222C (OSRAM) |
| ES (1) | ES443874A1 (OSRAM) |
| FR (1) | FR2295997A1 (OSRAM) |
| GB (1) | GB1532970A (OSRAM) |
| IT (1) | IT1059866B (OSRAM) |
| NL (1) | NL166571C (OSRAM) |
| SE (1) | SE431564B (OSRAM) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604565B2 (ja) * | 1974-11-21 | 1985-02-05 | 富士写真フイルム株式会社 | 耐食性強磁性金属粉末 |
| JPS54121268A (en) * | 1978-03-14 | 1979-09-20 | Tdk Corp | Manufacture of ferromagnetic metal powder |
| JPS54121269A (en) * | 1978-03-14 | 1979-09-20 | Tdk Corp | Manufacture of ferromagnetic metal powder |
| DE3330767A1 (de) * | 1983-08-26 | 1985-03-14 | Bayer Ag, 5090 Leverkusen | Handhabungsstabile im wesentlichen aus eisen bestehende magnetpigmente, verfahren zu ihrer herstellung sowie ihre verwendung |
| JPS6139508A (ja) * | 1984-07-31 | 1986-02-25 | Tdk Corp | 金属磁性粉末 |
| JPS61201702A (ja) * | 1985-03-01 | 1986-09-06 | Toyo Soda Mfg Co Ltd | 強磁性鉄粉末およびその製造法 |
| US5087302A (en) * | 1989-05-15 | 1992-02-11 | Industrial Technology Research Institute | Process for producing rare earth magnet |
| US5272223A (en) * | 1991-04-03 | 1993-12-21 | Asahi Kasei Metals Limited | Composite metal powder composition and method of manufacturing same |
| US9421732B2 (en) * | 2009-04-23 | 2016-08-23 | University Of Utah Research Foundation | Functionally coated non-oxidized particles and methods for making the same |
| WO2010124245A2 (en) | 2009-04-23 | 2010-10-28 | University Of Utah Research Foundation | Functionally coated non-oxidized particles and methods for making the same |
| CN114477988B (zh) * | 2022-03-28 | 2023-03-24 | 天通控股股份有限公司 | 一种易成型、高强度铁氧体材料及其制备方法 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1982689A (en) * | 1931-03-16 | 1934-12-04 | Johnson Lab Inc | Magnetic core material |
| US2158132A (en) * | 1938-02-17 | 1939-05-16 | Bell Telephone Labor Inc | Magnet body and process of making the same |
| US2602779A (en) * | 1947-09-11 | 1952-07-08 | Cities Service Oil Co | Method of inhibiting hydrogen sulfide corrosion of metals |
| US3300329A (en) * | 1960-09-26 | 1967-01-24 | Nat Lead Co | Metal-polyolefin compositions and process for making same |
| US3120698A (en) * | 1960-09-15 | 1964-02-11 | Ferro Corp | Powdered metal compositions and method |
| US3228882A (en) * | 1963-01-04 | 1966-01-11 | Chevron Res | Dispersions of ferromagnetic cobalt particles |
| GB1031503A (en) * | 1962-08-18 | 1966-06-02 | Imp Metal Ind Kynoch Ltd | The inhibition of corrosion of copper |
| US3228881A (en) * | 1963-01-04 | 1966-01-11 | Chevron Res | Dispersions of discrete particles of ferromagnetic metals |
| US3206338A (en) * | 1963-05-10 | 1965-09-14 | Du Pont | Non-pyrophoric, ferromagnetic acicular particles and their preparation |
| US3290252A (en) * | 1963-07-16 | 1966-12-06 | Chevron Res | Cobalt concentration from cobalt sol by extraction |
| US3556838A (en) * | 1966-11-01 | 1971-01-19 | Exxon Research Engineering Co | Process for coating active iron and the coated iron |
| US3661556A (en) * | 1969-03-03 | 1972-05-09 | Du Pont | Method of making ferromagnetic metal powders |
| DE2215301B2 (de) * | 1971-04-06 | 1976-07-08 | N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) | Verfahren zur herstellung eines koerpers mit anisotropen dauermagnetischen eigenschaften |
-
1974
- 1974-12-26 US US05/536,377 patent/US3964939A/en not_active Expired - Lifetime
-
1975
- 1975-10-16 CA CA237,738A patent/CA1065696A/en not_active Expired
- 1975-12-10 SE SE7513932A patent/SE431564B/xx not_active IP Right Cessation
- 1975-12-18 FR FR7538932A patent/FR2295997A1/fr active Granted
- 1975-12-19 DK DK581575A patent/DK157222C/da not_active IP Right Cessation
- 1975-12-19 BR BR7508472*A patent/BR7508472A/pt unknown
- 1975-12-22 DE DE2558036A patent/DE2558036C3/de not_active Expired
- 1975-12-22 AU AU87779/75A patent/AU503481B2/en not_active Expired
- 1975-12-22 GB GB52319/75A patent/GB1532970A/en not_active Expired
- 1975-12-22 IT IT70171/75A patent/IT1059866B/it active
- 1975-12-23 CH CH1671975A patent/CH602933A5/xx not_active IP Right Cessation
- 1975-12-24 JP JP15352475A patent/JPS5635721B2/ja not_active Expired
- 1975-12-24 NL NL7515077.A patent/NL166571C/xx not_active IP Right Cessation
- 1975-12-26 ES ES443874A patent/ES443874A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BR7508472A (pt) | 1976-08-24 |
| NL166571C (nl) | 1981-08-17 |
| JPS5193398A (OSRAM) | 1976-08-16 |
| ES443874A1 (es) | 1977-05-01 |
| GB1532970A (en) | 1978-11-22 |
| DK157222B (da) | 1989-11-20 |
| AU503481B2 (en) | 1979-09-06 |
| SE7513932L (sv) | 1976-06-28 |
| AU8777975A (en) | 1977-06-30 |
| FR2295997B1 (OSRAM) | 1978-06-30 |
| DE2558036A1 (de) | 1976-07-08 |
| FR2295997A1 (fr) | 1976-07-23 |
| CA1065696A (en) | 1979-11-06 |
| US3964939A (en) | 1976-06-22 |
| DK157222C (da) | 1990-04-23 |
| IT1059866B (it) | 1982-06-21 |
| SE431564B (sv) | 1984-02-13 |
| CH602933A5 (OSRAM) | 1978-08-15 |
| DK581575A (da) | 1976-06-27 |
| DE2558036B2 (de) | 1979-02-01 |
| NL7515077A (nl) | 1976-06-29 |
| NL166571B (nl) | 1981-03-16 |
| JPS5635721B2 (OSRAM) | 1981-08-19 |
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