USB59512I5 - - Google Patents

Info

Publication number
USB59512I5
USB59512I5 US5951270A USB59512I5 US B59512 I5 USB59512 I5 US B59512I5 US 5951270 A US5951270 A US 5951270A US B59512 I5 USB59512 I5 US B59512I5
Authority
US
United States
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
Application number
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to US05/059,512 priority Critical patent/US3999216A/en
Priority to US05/645,177 priority patent/US4101348A/en
Publication of USB59512I5 publication Critical patent/USB59512I5/en
Application granted granted Critical
Publication of US3999216A publication Critical patent/US3999216A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
    • C22C32/0068—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only nitrides
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14766—Fe-Si based alloys
    • H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/20—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/22—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
US05/059,512 1970-07-30 1970-07-30 Material for magnetic transducer heads Expired - Lifetime US3999216A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US05/059,512 US3999216A (en) 1970-07-30 1970-07-30 Material for magnetic transducer heads
US05/645,177 US4101348A (en) 1970-07-30 1975-12-29 Process for preparing hot-pressed sintered alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/059,512 US3999216A (en) 1970-07-30 1970-07-30 Material for magnetic transducer heads

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/645,177 Division US4101348A (en) 1970-07-30 1975-12-29 Process for preparing hot-pressed sintered alloys

Publications (2)

Publication Number Publication Date
USB59512I5 true USB59512I5 (en) 1976-03-16
US3999216A US3999216A (en) 1976-12-21

Family

ID=22023444

Family Applications (2)

Application Number Title Priority Date Filing Date
US05/059,512 Expired - Lifetime US3999216A (en) 1970-07-30 1970-07-30 Material for magnetic transducer heads
US05/645,177 Expired - Lifetime US4101348A (en) 1970-07-30 1975-12-29 Process for preparing hot-pressed sintered alloys

Family Applications After (1)

Application Number Title Priority Date Filing Date
US05/645,177 Expired - Lifetime US4101348A (en) 1970-07-30 1975-12-29 Process for preparing hot-pressed sintered alloys

Country Status (1)

Country Link
US (2) US3999216A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079430A (en) 1975-02-15 1978-03-14 Tdk Electronics, Co., Ltd. Magnetic head

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999216A (en) * 1970-07-30 1976-12-21 Eastman Kodak Company Material for magnetic transducer heads
JPS5241509A (en) * 1975-09-29 1977-03-31 Canon Inc Magnetic head
AT365804B (en) * 1977-12-20 1982-02-25 Bogen Wolfgang ABRASION RESISTANT MAGNETIC HEAD
US4244738A (en) * 1978-03-24 1981-01-13 Samuel Storchheim Method of and apparatus for hot pressing particulates
JPS5585656A (en) * 1978-12-22 1980-06-27 Hitachi Denshi Ltd Wear-resistant high-permeability alloy, heat treating method therefor and magnetic head using said alloy
US4379003A (en) * 1980-07-30 1983-04-05 Bell Telephone Laboratories, Incorporated Magnetic devices by selective reduction of oxides
US4564401A (en) * 1983-09-29 1986-01-14 Crucible Materials Corporation Method for producing iron-silicon alloy articles
US4586729A (en) * 1984-04-27 1986-05-06 George Beylerian Magnetic covered folio case
US5001589A (en) * 1989-05-31 1991-03-19 Seagate Technology, Inc. Tungsten and tantalum diffusion barriers for Metal-In-Gap magnetic heads
JPH0312809A (en) * 1989-06-09 1991-01-21 Matsushita Electric Ind Co Ltd Nanocomposite substrate
DE69028360T2 (en) * 1989-06-09 1997-01-23 Matsushita Electric Ind Co Ltd Composite material and process for its manufacture
DE69031250T2 (en) * 1989-06-09 1997-12-04 Matsushita Electric Ind Co Ltd Magnetic material
JPH05117023A (en) * 1991-10-25 1993-05-14 Nec Corp Non-magnetic substrate for magnetic head and magnetic heat
US5344605A (en) * 1991-11-22 1994-09-06 Sumitomo Electric Industries, Ltd. Method of degassing and solidifying an aluminum alloy powder
JPH06259729A (en) * 1993-03-03 1994-09-16 Tdk Corp Magnetic head
JPH07145442A (en) * 1993-03-15 1995-06-06 Alps Electric Co Ltd Soft magnetic alloy compact and its production
DE4425922B4 (en) * 1994-07-21 2004-03-18 Siemens Ag Process for producing a phosphor ceramic by hot pressing
JP4416313B2 (en) * 2000-12-15 2010-02-17 株式会社小松製作所 Sliding material, composite sintered sliding member, and method for manufacturing the same
JP2002299114A (en) * 2001-04-03 2002-10-11 Daido Steel Co Ltd Dust core
US6930863B2 (en) 2003-01-10 2005-08-16 International Business Machines Corporation Graded laminated thin film poles and shields for magnetic heads
US7450344B2 (en) * 2003-11-12 2008-11-11 Intri-Plex Technologies, Inc. Remelted Magnetic head support structure in a disk drive
EP1868213A4 (en) * 2005-03-29 2011-01-26 Sumitomo Electric Industries Soft magnetic material and process for producing green compact

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801942A (en) * 1954-02-26 1957-08-06 Joseph F Nachman Method of rendering an aluminum-iron alloy ductile
US2992474A (en) * 1958-11-17 1961-07-18 Adams Edmond Magnetic tape recorder heads
FR1437301A (en) * 1965-06-23 1966-04-29 Atomic Energy Authority Uk Method for limiting grain growth in sintered bodies
US3262763A (en) * 1964-02-19 1966-07-26 Du Pont High temperature-resistant materials of aluminum, boron, nitrogen, and silicon and preparation thereof
US3417386A (en) * 1965-10-11 1968-12-17 Cons Electrodynamics Corp Magnetic head assembly
US3424685A (en) * 1965-03-23 1969-01-28 Itt High permeability ferromagnetic ferrite materials
US3469942A (en) * 1966-10-12 1969-09-30 Bitterfeld Chemie Production of iron oxide for oxidic sintered shaped bodies
US3472655A (en) * 1966-07-02 1969-10-14 Lonza Werke Elektrochemische Sinter products for nitrating steel
US3557266A (en) * 1967-02-09 1971-01-19 Matsushita Electric Ind Co Ltd Method of eliminating the porosity and controlling the grain size of a ferrite body by a two stage hot pressing treatment

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2193768A (en) * 1932-02-06 1940-03-12 Kinzoku Zairyo Kenkyusho Magnetic alloys
US2666724A (en) * 1952-12-03 1954-01-19 Gen Aniline & Film Corp Process of preparing iron powder of improved electromagnetic properties
US2933386A (en) * 1956-08-01 1960-04-19 Rca Corp Method of sintering and nitriding ferrous bodies
US2988806A (en) * 1958-11-17 1961-06-20 Adams Edmond Sintered magnetic alloy and methods of production
US3297439A (en) * 1963-11-18 1967-01-10 Abex Corp Simultaneous sinter bond and nitride for powdered material and backing assembly
US3424578A (en) * 1967-06-05 1969-01-28 Us Air Force Method of producing permanent magnets of rare earth metals containing co,or mixtures of co,fe and mn
US3663767A (en) * 1968-11-16 1972-05-16 Tokyo Shibaura Electric Co Magnetic head
US3999216A (en) * 1970-07-30 1976-12-21 Eastman Kodak Company Material for magnetic transducer heads

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801942A (en) * 1954-02-26 1957-08-06 Joseph F Nachman Method of rendering an aluminum-iron alloy ductile
US2992474A (en) * 1958-11-17 1961-07-18 Adams Edmond Magnetic tape recorder heads
US3262763A (en) * 1964-02-19 1966-07-26 Du Pont High temperature-resistant materials of aluminum, boron, nitrogen, and silicon and preparation thereof
US3424685A (en) * 1965-03-23 1969-01-28 Itt High permeability ferromagnetic ferrite materials
FR1437301A (en) * 1965-06-23 1966-04-29 Atomic Energy Authority Uk Method for limiting grain growth in sintered bodies
US3417386A (en) * 1965-10-11 1968-12-17 Cons Electrodynamics Corp Magnetic head assembly
US3472655A (en) * 1966-07-02 1969-10-14 Lonza Werke Elektrochemische Sinter products for nitrating steel
US3469942A (en) * 1966-10-12 1969-09-30 Bitterfeld Chemie Production of iron oxide for oxidic sintered shaped bodies
US3557266A (en) * 1967-02-09 1971-01-19 Matsushita Electric Ind Co Ltd Method of eliminating the porosity and controlling the grain size of a ferrite body by a two stage hot pressing treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079430A (en) 1975-02-15 1978-03-14 Tdk Electronics, Co., Ltd. Magnetic head

Also Published As

Publication number Publication date
US4101348A (en) 1978-07-18
US3999216A (en) 1976-12-21

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Legal Events

Date Code Title Description
AS Assignment

Owner name: EASTMAN KODAK COMPANY, A CORP. OF N.J.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SPIN PHYSICS, INC.;REEL/FRAME:004101/0802

Effective date: 19821227

STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)