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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%
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
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
DE69031250T2 (en) * 1989-06-09 1997-12-04 Matsushita Electric Ind Co Ltd Magnetic material
DE69028360T2 (en) * 1989-06-09 1997-01-23 Matsushita Electric Ind Co Ltd Composite material and process for its manufacture
JPH0312809A (en) * 1989-06-09 1991-01-21 Matsushita Electric Ind Co Ltd Nanocomposite substrate
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
US7641745B2 (en) * 2005-03-29 2010-01-05 Sumitomo Electric Industries, Ltd. Soft magnetic material and method of producing powder 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 Industrial 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 Industrial 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
US3999216A (en) 1976-12-21
US4101348A (en) 1978-07-18

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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)