JPS5029157B1 - - Google Patents
Info
- Publication number
- JPS5029157B1 JPS5029157B1 JP46035860A JP3586071A JPS5029157B1 JP S5029157 B1 JPS5029157 B1 JP S5029157B1 JP 46035860 A JP46035860 A JP 46035860A JP 3586071 A JP3586071 A JP 3586071A JP S5029157 B1 JPS5029157 B1 JP S5029157B1
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
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- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/48—Coating with alloys
- C23C18/50—Coating with alloys with alloys based on iron, cobalt or nickel
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- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
- G11B5/70647—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides with a skin
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- 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
- H01F1/065—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 obtained by a reduction
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Dermatology (AREA)
- General Health & Medical Sciences (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46035860A JPS5029157B1 (US07122603-20061017-C00045.png) | 1971-05-27 | 1971-05-27 | |
DE2225796A DE2225796C3 (de) | 1971-05-27 | 1972-05-26 | Verfahren zur Herstellung von magnetischem Material in Pulverform |
US05/257,716 US3958068A (en) | 1971-05-27 | 1972-05-30 | Process for the production of powdered magnetic material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46035860A JPS5029157B1 (US07122603-20061017-C00045.png) | 1971-05-27 | 1971-05-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5029157B1 true JPS5029157B1 (US07122603-20061017-C00045.png) | 1975-09-20 |
Family
ID=12453722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP46035860A Pending JPS5029157B1 (US07122603-20061017-C00045.png) | 1971-05-27 | 1971-05-27 |
Country Status (3)
Country | Link |
---|---|
US (1) | US3958068A (US07122603-20061017-C00045.png) |
JP (1) | JPS5029157B1 (US07122603-20061017-C00045.png) |
DE (1) | DE2225796C3 (US07122603-20061017-C00045.png) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4137342A (en) * | 1976-10-29 | 1979-01-30 | Minnesota Mining And Manufacturing Company | Cobalt-doped acicular hyper-magnetite particles |
JPS5939814B2 (ja) * | 1978-03-16 | 1984-09-26 | ティーディーケイ株式会社 | 磁気記録媒体の製造方法 |
US4226909A (en) * | 1978-08-21 | 1980-10-07 | Minnesota Mining And Manufacturing Company | Cobalt-doped acicular hyper-magnetite particles |
US4657816A (en) * | 1982-04-19 | 1987-04-14 | Memorex Corporation | Ferromagnetic recording materials |
DE3240337A1 (de) * | 1982-10-30 | 1984-05-03 | Basf Ag, 6700 Ludwigshafen | Nadelfoermige ferromagnetische chromdioxidteilchen |
US4495246A (en) * | 1983-10-27 | 1985-01-22 | Basf Aktiengesellschaft | Acicular ferromagnetic chromium dioxide particles |
JP3866074B2 (ja) * | 2001-10-12 | 2007-01-10 | 富士フイルムホールディングス株式会社 | 強磁性金属粉末及びその製造方法並びに磁気記録媒体 |
EP1662256A1 (en) * | 2004-11-25 | 2006-05-31 | Spinomix S.A. | Tailored magnetic particles and method to produce same |
US9157841B2 (en) | 2013-03-01 | 2015-10-13 | Spinomix, S.A. | Magnetic particles based separation and assaying method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2809731A (en) * | 1950-11-16 | 1957-10-15 | Vickers Inc | Magnetic particle coupling device with nickel-coated iron particles |
US3139354A (en) * | 1961-03-31 | 1964-06-30 | Rca Corp | Magnetic recording element containing magnetic particles treated with werner-type complex compound and method of manufacture thereof |
US3556839A (en) * | 1966-11-01 | 1971-01-19 | Ind Distributors 1946 Ltd | Electroless metal coating |
US3494760A (en) * | 1967-09-28 | 1970-02-10 | Burton Electrochem Co Inc | Production of metal and alloy particles by chemical reduction |
US3567525A (en) * | 1968-06-25 | 1971-03-02 | Du Pont | Heat treated ferromagnetic particles |
US3632512A (en) * | 1969-02-17 | 1972-01-04 | Eastman Kodak Co | Method of preparing magnetically responsive carrier particles |
US3770500A (en) * | 1969-09-16 | 1973-11-06 | Tdk Electronics Co Ltd | Magnetic materials and method of making same |
US3718594A (en) * | 1970-11-30 | 1973-02-27 | Eastman Kodak Co | Method of preparing magnetically responsive carrier particles |
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1971
- 1971-05-27 JP JP46035860A patent/JPS5029157B1/ja active Pending
-
1972
- 1972-05-26 DE DE2225796A patent/DE2225796C3/de not_active Expired
- 1972-05-30 US US05/257,716 patent/US3958068A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2225796B2 (de) | 1977-06-08 |
DE2225796A1 (de) | 1972-12-14 |
DE2225796C3 (de) | 1982-12-02 |
US3958068A (en) | 1976-05-18 |