KR840007910A - 고밀도 자기기록매체용 알루미늄기판의 제조방법 - Google Patents

고밀도 자기기록매체용 알루미늄기판의 제조방법 Download PDF

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Publication number
KR840007910A
KR840007910A KR1019840001318A KR840001318A KR840007910A KR 840007910 A KR840007910 A KR 840007910A KR 1019840001318 A KR1019840001318 A KR 1019840001318A KR 840001318 A KR840001318 A KR 840001318A KR 840007910 A KR840007910 A KR 840007910A
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KR
South Korea
Prior art keywords
manufacturing
recording medium
magnetic recording
high density
aluminum
Prior art date
Application number
KR1019840001318A
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English (en)
Inventor
고이찌(외 3) 요시다
Original Assignee
아사노 야스스께
니뽄 케이킨조꾸 가부시기가이샤
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 아사노 야스스께, 니뽄 케이킨조꾸 가부시기가이샤 filed Critical 아사노 야스스께
Publication of KR840007910A publication Critical patent/KR840007910A/ko

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium
    • 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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G11B5/73919—Aluminium or titanium elemental or alloy substrates

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

내용 없음.

Description

고밀도 자기기록매체용 알루미늄기판의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (7)

  1. 자기기록 매체용 알루미늄기판의 제조방법에 있어서, 전해액으로서 1.5∼15중량%의 크롬산 용액을 사용하여 60볼트 이상의 전해전압의 정전압법에 의해 알루미늄 재료를 전기도금시키는 방법을 특징으로 하는 고밀도 자기 기록매체용 알루미늄 기판의 제조방법.
  2. 제1항에 있어서, 70∼100볼트의 정전압법에 의해서 전기도금되는 것을 특징으로하는 고밀도 자기 기록매체용 알루미늄 기판의 제조방법.
  3. 제1항에 있어서, 알루미늄재료가 99.9% 이상의 순도를 지닌 고순도 알루미늄이거나, 기저금속으로 상기 고순도 알루미늄과 2∼6중량%의 마그네슘으로 구성된 알루미늄 합금인 것을 특징으로 하는 고밀도 자기 기록매체용 알루미늄 기판의 제조방법.
  4. 제1항에 있어서, 전해액중의 크롬산농도의 1/5이하의 양의 옥살산이 그 전해액에 함유된 것을 특징으로 하는 고밀도 자기기록매체용 알루미늄 기판의 제조방법.
  5. 제1항에 있어서, 전기도금시 크롬산의 농도의 1/20이하로 전해액중에서 알루미늄이온의 농도가 유지되는 것을 특징으로 하는 고밀도자기기록매체용 알루미늄 기판의 제조방법.
  6. 제1항에 있어서, 전기도금에 의해 형성된 양극산화피막의 두께가 10㎛∼18㎛인 것을 특징으로 하는 고밀도 자기 기록매체용 알루미늄 기판의 제조방법.
  7. 제1항에 있어서, 전해액으로서 1.5∼15중량%의 크롬산 용액을 사용하여 60볼트이상의 전해전압의 정전압법에 의해서 알루미늄 재료를 전기분해하는 것을 특징으로 하는 고밀도 자기 기록매체용 알루미늄 기판의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019840001318A 1983-03-18 1984-03-15 고밀도 자기기록매체용 알루미늄기판의 제조방법 KR840007910A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58044364A JPS59171023A (ja) 1983-03-18 1983-03-18 高密度磁気記録材用アルマイト基板の製造法
JP44364 1983-03-18

Publications (1)

Publication Number Publication Date
KR840007910A true KR840007910A (ko) 1984-12-11

Family

ID=12689451

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019840001318A KR840007910A (ko) 1983-03-18 1984-03-15 고밀도 자기기록매체용 알루미늄기판의 제조방법

Country Status (8)

Country Link
JP (1) JPS59171023A (ko)
KR (1) KR840007910A (ko)
CA (1) CA1237694A (ko)
DE (1) DE3408753C2 (ko)
FR (1) FR2542901B1 (ko)
GB (1) GB2136448B (ko)
IT (1) IT1206136B (ko)
NL (1) NL8400849A (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62149029A (ja) * 1985-09-04 1987-07-03 Furukawa Alum Co Ltd アルマイト磁気デイスク基板とその製造方法
GB0208642D0 (en) 2002-04-16 2002-05-22 Accentus Plc Metal implants
GB0405680D0 (en) 2004-03-13 2004-04-21 Accentus Plc Metal implants
AU2008306596B2 (en) 2007-10-03 2013-04-04 Accentus Plc Method of manufacturing metal with biocidal properties

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH287575A (fr) * 1951-01-27 1952-12-15 S A Vernal Procédé d'oxydation électrolytique de l'aluminium et de ses alliages.
NL6609803A (ko) * 1966-07-13 1968-01-15
NL6612707A (ko) * 1966-09-09 1968-03-11
US4109287A (en) * 1972-04-14 1978-08-22 Pilot Man-Nun-Hitsu Kabushiki Kaisha Process for recording information or sound and process for preparation of recording materials used therefor
GB1464857A (en) * 1974-05-08 1977-02-16 Nat Res Dev Chromic acid anodising of aluminium and its alloys

Also Published As

Publication number Publication date
JPS59171023A (ja) 1984-09-27
FR2542901B1 (fr) 1987-11-13
GB8405910D0 (en) 1984-04-11
DE3408753C2 (de) 1986-04-17
GB2136448A (en) 1984-09-19
NL8400849A (nl) 1984-10-16
GB2136448B (en) 1986-09-17
IT8420101A0 (it) 1984-03-16
IT1206136B (it) 1989-04-14
DE3408753A1 (de) 1984-09-20
FR2542901A1 (fr) 1984-09-21
JPH0346890B2 (ko) 1991-07-17
CA1237694A (en) 1988-06-07

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