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FR2099536B1 - - Google Patents

Info

Publication number
FR2099536B1
FR2099536B1 FR7126272A FR7126272A FR2099536B1 FR 2099536 B1 FR2099536 B1 FR 2099536B1 FR 7126272 A FR7126272 A FR 7126272A FR 7126272 A FR7126272 A FR 7126272A FR 2099536 B1 FR2099536 B1 FR 2099536B1
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
FR7126272A
Other versions
FR2099536A1 (fr
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 FR2099536A1 publication Critical patent/FR2099536A1/fr
Application granted granted Critical
Publication of FR2099536B1 publication Critical patent/FR2099536B1/fr
Expired 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/46—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing oxalates
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • C23C22/58—Treatment of other metallic material
    • 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
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction

Landscapes

  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)
  • Polyamides (AREA)
FR7126272A 1970-07-23 1971-07-19 Expired FR2099536B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5767170A 1970-07-23 1970-07-23

Publications (2)

Publication Number Publication Date
FR2099536A1 FR2099536A1 (fr) 1972-03-17
FR2099536B1 true FR2099536B1 (fr) 1976-04-02

Family

ID=22012034

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7126272A Expired FR2099536B1 (fr) 1970-07-23 1971-07-19

Country Status (10)

Country Link
US (1) US3674554A (fr)
JP (1) JPS5030443B1 (fr)
AU (1) AU3114771A (fr)
BE (1) BE770367A (fr)
CA (1) CA943440A (fr)
DE (1) DE2135899C3 (fr)
FR (1) FR2099536B1 (fr)
GB (1) GB1298536A (fr)
IT (1) IT938587B (fr)
ZA (1) ZA714618B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5050901A (fr) * 1973-09-04 1975-05-07
US4029541A (en) * 1974-07-05 1977-06-14 Ampex Corporation Magnetic recording disc of improved durability having tin-nickel undercoating
DE2608022C2 (de) 1976-02-27 1984-03-29 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung magnetischer Aufzeichnungsträger mit verschleißfester Oberfläche
FR2473209A1 (fr) * 1980-01-08 1981-07-10 Sagem Procede pour former une couche de protection sur une couche magnetique et couche magnetique protegee obtenue par ce procede
JPS57191830A (en) * 1981-05-22 1982-11-25 Sony Corp Magnetic recording medium
GB8718010D0 (en) * 1986-08-21 1987-09-03 Ici Plc Surface treatment for recording media
GB2309980B (en) * 1996-02-06 1998-12-16 Abbey Treatment of ferrous metal surfaces
CN112919896B (zh) * 2020-12-28 2022-01-18 横店集团东磁股份有限公司 一种高致密度永磁铁氧体材料的制备方法

Also Published As

Publication number Publication date
AU3114771A (en) 1973-01-18
IT938587B (it) 1973-01-25
DE2135899C3 (de) 1975-09-25
DE2135899B2 (de) 1975-02-06
CA943440A (en) 1974-03-12
FR2099536A1 (fr) 1972-03-17
DE2135899A1 (de) 1972-02-17
US3674554A (en) 1972-07-04
BE770367A (fr) 1971-12-01
JPS5030443B1 (fr) 1975-10-01
GB1298536A (en) 1972-12-06
ZA714618B (en) 1972-07-26

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse