FR2147239B3 - - Google Patents

Info

Publication number
FR2147239B3
FR2147239B3 FR7227005A FR7227005A FR2147239B3 FR 2147239 B3 FR2147239 B3 FR 2147239B3 FR 7227005 A FR7227005 A FR 7227005A FR 7227005 A FR7227005 A FR 7227005A FR 2147239 B3 FR2147239 B3 FR 2147239B3
Authority
FR
France
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
Application number
FR7227005A
Other languages
French (fr)
Other versions
FR2147239A1 (OSRAM
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.)
Control Data Corp
Original Assignee
Control Data Corp
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 Control Data Corp filed Critical Control Data Corp
Publication of FR2147239A1 publication Critical patent/FR2147239A1/fr
Application granted granted Critical
Publication of FR2147239B3 publication Critical patent/FR2147239B3/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
    • 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
    • C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Chemically Coating (AREA)
  • Magnetic Record Carriers (AREA)
FR7227005A 1971-07-29 1972-07-27 Expired FR2147239B3 (OSRAM)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16710671A 1971-07-29 1971-07-29

Publications (2)

Publication Number Publication Date
FR2147239A1 FR2147239A1 (OSRAM) 1973-03-09
FR2147239B3 true FR2147239B3 (OSRAM) 1975-09-05

Family

ID=22605960

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7227005A Expired FR2147239B3 (OSRAM) 1971-07-29 1972-07-27

Country Status (5)

Country Link
CA (1) CA980505A (OSRAM)
DE (1) DE2236580A1 (OSRAM)
FR (1) FR2147239B3 (OSRAM)
GB (1) GB1359945A (OSRAM)
IT (1) IT963522B (OSRAM)

Also Published As

Publication number Publication date
CA980505A (en) 1975-12-30
DE2236580A1 (de) 1973-02-08
GB1359945A (en) 1974-07-17
FR2147239A1 (OSRAM) 1973-03-09
IT963522B (it) 1974-01-21

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Legal Events

Date Code Title Description
TP Transmission of property