JPS57181301A - Stabilization of spontaneously ignitable highly magnetic needle-like metal particle consisting of iron substantially - Google Patents

Stabilization of spontaneously ignitable highly magnetic needle-like metal particle consisting of iron substantially

Info

Publication number
JPS57181301A
JPS57181301A JP57064086A JP6408682A JPS57181301A JP S57181301 A JPS57181301 A JP S57181301A JP 57064086 A JP57064086 A JP 57064086A JP 6408682 A JP6408682 A JP 6408682A JP S57181301 A JPS57181301 A JP S57181301A
Authority
JP
Japan
Prior art keywords
stabilization
metal particle
magnetic needle
particle consisting
highly magnetic
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.)
Pending
Application number
JP57064086A
Other languages
English (en)
Inventor
Yaakushiyu Herumuuto
Reezaa Buerunaa
Kesutaa Eeberuharuto
Rudorufu Peetaa
Zenkupiiru Buerunaa
Shiyuteku Buerunaa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
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 by BASF SE filed Critical BASF SE
Publication of JPS57181301A publication Critical patent/JPS57181301A/ja
Pending legal-status Critical Current

Links

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
    • 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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/12—Oxidising using elemental oxygen or ozone
    • C23C8/14—Oxidising of ferrous surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/145—Chemical treatment, e.g. passivation or decarburisation
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
  • Powder Metallurgy (AREA)
  • Paints Or Removers (AREA)
  • Compounds Of Iron (AREA)
  • Carbon And Carbon Compounds (AREA)
JP57064086A 1981-04-25 1982-04-19 Stabilization of spontaneously ignitable highly magnetic needle-like metal particle consisting of iron substantially Pending JPS57181301A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813116489 DE3116489A1 (de) 1981-04-25 1981-04-25 Verfahren zur stabilisierung pyrophorer, im wesentlichen aus eisen bestehender ferromagnetischer nadelfoermiger metallteilchen

Publications (1)

Publication Number Publication Date
JPS57181301A true JPS57181301A (en) 1982-11-08

Family

ID=6130824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57064086A Pending JPS57181301A (en) 1981-04-25 1982-04-19 Stabilization of spontaneously ignitable highly magnetic needle-like metal particle consisting of iron substantially

Country Status (4)

Country Link
US (1) US4420330A (ja)
EP (1) EP0063730A3 (ja)
JP (1) JPS57181301A (ja)
DE (1) DE3116489A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59110701A (ja) * 1982-12-16 1984-06-26 Mitsui Toatsu Chem Inc 磁気記録用還元鉄粉の安定化方法

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE3422916A1 (de) * 1984-06-20 1986-01-02 Bayer Ag, 5090 Leverkusen Im wesentlichen aus eisen bestehende magnetische pigmente, verfahren zu ihrer herstellung sowie deren verwendung
JPS63199801A (ja) * 1987-02-12 1988-08-18 Chisso Corp 強磁性金属粉末の安定化処理装置
JPH0620008B2 (ja) * 1987-08-24 1994-03-16 チッソ株式会社 酸化皮膜を有する強磁性金属粉末の製造方法
JP2739600B2 (ja) * 1989-10-03 1998-04-15 富士写真フイルム株式会社 強磁性金属粉末の処理方法及び磁気記録媒体の製造方法
DE4115426A1 (de) * 1991-05-10 1992-11-12 Basf Magnetics Gmbh Verfahren zum stabilisieren von nadelfoermigen, im wesentlichen aus eisen bestehenden, ferromagnetischen metallpulvern
DE4294047T1 (de) * 1991-11-22 1996-09-26 Ampex Media Corp Lagerung von Metallteilchen
GB2288411B (en) * 1994-03-24 1998-04-15 Silberline Ltd Metal pigments
US5849817A (en) * 1994-03-24 1998-12-15 Silberline Limited Metal pigments
JP2001305733A (ja) * 2000-04-18 2001-11-02 Sumitomo Chem Co Ltd 感光性組成物の保存方法
CN100463863C (zh) * 2006-11-24 2009-02-25 金川集团有限公司 一种防止超细羰基铁粉自燃的方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520676A (en) * 1968-05-28 1970-07-14 Eastman Kodak Co Stabilization of pyrophoric metal powder
NL6909443A (ja) 1969-06-20 1970-12-22
US3623859A (en) * 1970-05-22 1971-11-30 Ampex Process of making acicular stable magnetic iron particles
NL7018910A (en) * 1970-12-29 1972-07-03 Passivating ferromagnetic powder - by treating cooled moving powder with limited amount of oxygen at controlled temp and gradually
US3767477A (en) * 1971-12-27 1973-10-23 Eastman Kodak Co Method for producing oxide coated iron powder of controlled resistance for electrostatic copying systems
DE2212934A1 (de) * 1972-03-17 1973-09-20 Philips Nv Verfahren zur herstellung eines im wesentlichen aus eisen bestehenden metallpulvers
US3926617A (en) * 1973-02-21 1975-12-16 Midrex Corp Passivation of metallized pellets in bulk
US3967986A (en) * 1975-01-27 1976-07-06 U.S. Philips Corporation Method of preparing ferromagnetic material
DE2524520C2 (de) * 1975-06-03 1982-08-26 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren zur beschleunigten Stabilisierung pyrophorer Eisenpulver
DE2646348C2 (de) * 1976-10-14 1986-08-28 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von nadelförmigen, ferromagnetischen, im wesentlichen aus Eisen bestehenden Metallteilchen und deren Verwendung zur Herstellung von magnetischen Aufzeichnungsträgern
US4207092A (en) * 1977-03-03 1980-06-10 E. I. Du Pont De Nemours And Company Acicular α-iron particles, their preparation and recording media employing same
US4251592A (en) * 1979-04-03 1981-02-17 Toda Kogyo Corp. Stabilization treatment of acicular ferromagnetic iron or iron-alloy particles against the oxidation thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59110701A (ja) * 1982-12-16 1984-06-26 Mitsui Toatsu Chem Inc 磁気記録用還元鉄粉の安定化方法

Also Published As

Publication number Publication date
EP0063730A3 (de) 1983-04-13
EP0063730A2 (de) 1982-11-03
US4420330A (en) 1983-12-13
DE3116489A1 (de) 1982-11-11

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