DE69422831D1 - Glaskeramik für Magnetplatten-Substrate - Google Patents

Glaskeramik für Magnetplatten-Substrate

Info

Publication number
DE69422831D1
DE69422831D1 DE69422831T DE69422831T DE69422831D1 DE 69422831 D1 DE69422831 D1 DE 69422831D1 DE 69422831 T DE69422831 T DE 69422831T DE 69422831 T DE69422831 T DE 69422831T DE 69422831 D1 DE69422831 D1 DE 69422831D1
Authority
DE
Germany
Prior art keywords
magnetic disk
glass ceramic
disk substrates
substrates
ceramic
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.)
Expired - Fee Related
Application number
DE69422831T
Other languages
English (en)
Other versions
DE69422831T2 (de
Inventor
Naoyuki Goto
Katsuhiko Yamaguchi
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.)
Ohara Inc
Original Assignee
Ohara Inc
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 Ohara Inc filed Critical Ohara Inc
Publication of DE69422831D1 publication Critical patent/DE69422831D1/de
Application granted granted Critical
Publication of DE69422831T2 publication Critical patent/DE69422831T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0018—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and monovalent metal oxide as main constituents
    • C03C10/0027—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and monovalent metal oxide as main constituents containing SiO2, Al2O3, Li2O as main constituents
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0036—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and a divalent metal oxide as main constituents
    • C03C10/0045—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and a divalent metal oxide as main constituents containing SiO2, Al2O3 and MgO as main constituents
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0054—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing PbO, SnO2, B2O3
    • 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
    • G11B5/73921—Glass or ceramic substrates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
DE69422831T 1993-05-19 1994-05-17 Glaskeramik für Magnetplatten-Substrate Expired - Fee Related DE69422831T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5139989A JP2516553B2 (ja) 1993-05-19 1993-05-19 磁気ディスク用結晶化ガラスおよびその製造方法
CN94108224A CN1042827C (zh) 1993-05-19 1994-07-11 磁盘基片用的玻璃-陶瓷及其制法

Publications (2)

Publication Number Publication Date
DE69422831D1 true DE69422831D1 (de) 2000-03-02
DE69422831T2 DE69422831T2 (de) 2000-08-17

Family

ID=37075846

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69422831T Expired - Fee Related DE69422831T2 (de) 1993-05-19 1994-05-17 Glaskeramik für Magnetplatten-Substrate
DE69409424T Expired - Fee Related DE69409424T2 (de) 1993-05-19 1994-05-17 Glaskeramik für Magnetplatten-Substrate und Verfahren zu ihrer Herstellung

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69409424T Expired - Fee Related DE69409424T2 (de) 1993-05-19 1994-05-17 Glaskeramik für Magnetplatten-Substrate und Verfahren zu ihrer Herstellung

Country Status (4)

Country Link
EP (1) EP0626353B1 (de)
JP (1) JP2516553B2 (de)
CN (1) CN1042827C (de)
DE (2) DE69422831T2 (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5780164A (en) * 1994-12-12 1998-07-14 The Dow Chemical Company Computer disk substrate, the process for making same, and the material made therefrom
US5672435A (en) * 1994-12-12 1997-09-30 The Dow Chemical Company Hard disk drive components and methods of making same
EP1124219A1 (de) * 1995-06-21 2001-08-16 Ngk Insulators, Ltd. Magnetplattenträger, magnetische Platte und Verfahren zur Herstellung des Magnetplattenträgers
JP3130800B2 (ja) * 1995-07-24 2001-01-31 日本山村硝子株式会社 磁気ディスク基板用ガラス組成物及び磁気ディスク基板
US6287663B1 (en) * 1995-10-31 2001-09-11 Kabushiki Kaisha Ohara Glass-ceramic substrate for a magnetic information storage medium
US5691256A (en) * 1995-12-28 1997-11-25 Yamamura Glass Co., Ltd. Glass composition for magnetic disk substrates and magnetic disk substrate
TW366331B (en) * 1996-02-02 1999-08-11 Ohara Kk A glass-ceramic substrate for a magnetic disk
JPH10158034A (ja) * 1996-10-04 1998-06-16 S Ii C Kk 情報記録ディスク基板用結晶化ガラス
JP3219705B2 (ja) * 1996-11-14 2001-10-15 株式会社オハラ 磁気情報記憶媒体用ガラスセラミックス基板
JP3140702B2 (ja) * 1996-12-20 2001-03-05 日本碍子株式会社 磁気ディスク基板用結晶化ガラス、磁気ディスク基板および磁気ディスク
US6120922A (en) 1997-04-28 2000-09-19 Goto; Naoyuki Glass-ceramic substrate for a magnetic information storage medium
US6344423B2 (en) * 1998-02-26 2002-02-05 Kabushiki Kaisha Ohara High rigidity glass-ceramic substrate for a magnetic information storage medium
US6294490B1 (en) 1998-03-13 2001-09-25 Hoya Corporation Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate
US7264894B2 (en) 1998-03-13 2007-09-04 Hoya Corporation Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate
CN1067351C (zh) * 1998-04-07 2001-06-20 电子科技大学 一种电真空玻璃
DE19838198C2 (de) 1998-08-24 2002-06-27 Schott Glas Gläser und Glaskeramiken mit hohem E-Modul sowie deren Verwendungen
JP2000169181A (ja) 1998-09-30 2000-06-20 Kobe Steel Ltd 記録媒体用高比剛性ガラス及び該ガラスを用いたハ―ドディスク基板
DE19917921C1 (de) * 1999-04-20 2000-06-29 Schott Glas Gläser und Glaskeramiken mit hohem spezifischen E-Modul und deren Verwendung
SG97155A1 (en) 1999-07-07 2003-07-18 Hoya Corp Substrate for information recording medium and magnetic recording medium composed of crystallized glass
JP3107304B1 (ja) * 1999-08-10 2000-11-06 株式会社オハラ 光フィルター用ガラスセラミックス及び光フィルター
JP2001097740A (ja) 1999-09-29 2001-04-10 Ngk Insulators Ltd 結晶化ガラス、磁気ディスク用基板および磁気ディスク
TW200724506A (en) 2005-10-07 2007-07-01 Ohara Kk Inorganic composition
WO2013053866A2 (de) * 2011-10-14 2013-04-18 Ivoclar Vivadent Ag Lithiumsilikat-glaskeramik und -glas mit vierwertigem metalloxid
KR20160129098A (ko) * 2011-10-14 2016-11-08 이보클라 비바덴트 아게 2가 금속 산화물을 포함하는 리튬 실리케이트 유리 세라믹 및 리튬 실리케이트 유리
US10723649B2 (en) * 2017-11-30 2020-07-28 Corning Incorporated Black lithium silicate glass ceramics
CN108585509A (zh) * 2018-04-27 2018-09-28 南昌大学 一种微晶玻璃制备方法
CN111268913B (zh) * 2018-10-26 2022-07-29 成都光明光电股份有限公司 电子设备盖板用微晶玻璃制品和微晶玻璃
CN111099825B (zh) * 2018-10-26 2021-02-02 成都光明光电股份有限公司 微晶玻璃、微晶玻璃制品及其制造方法
CN115677193A (zh) * 2021-07-29 2023-02-03 重庆鑫景特种玻璃有限公司 一种微晶玻璃、及其制备方法和用途
CN115305012B (zh) * 2022-09-21 2023-07-11 锦西化工研究院有限公司 航空有机玻璃用抛光液及其制备方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE638474A (de) * 1958-06-03
NL121002C (de) * 1960-02-29
JPS60229234A (ja) * 1984-04-27 1985-11-14 Sumitomo Special Metals Co Ltd 磁気ディスク用基板の製造方法
JPS6163542A (ja) * 1984-09-03 1986-04-01 Hoya Corp 熱膨脹係数の大きな結晶化ガラスとその製法
JPS6272547A (ja) * 1985-09-26 1987-04-03 Toshimichi Morisane 磁気記録用グラス・セラミツク基体
JPH0629152B2 (ja) * 1987-02-26 1994-04-20 株式会社オハラ 基板用結晶化ガラスの製造方法
JP2886872B2 (ja) * 1989-01-13 1999-04-26 株式会社日立製作所 磁気ディスク用基板および磁気ディスク
US4971932B1 (en) * 1989-02-24 1995-01-03 Corning Glass Works Magnetic memory storage devices
JPH03119511A (ja) * 1989-10-02 1991-05-21 Sony Corp スライダ付ヘッド
JPH0825775B2 (ja) * 1990-10-04 1996-03-13 東芝硝子株式会社 磁気ディスク用結晶化ガラス基板
JPH0692680A (ja) * 1992-03-30 1994-04-05 Agency Of Ind Science & Technol 磁気ヘッド又は磁気ディスクの基板用結晶化ガラス及びその製法
US5476821A (en) * 1994-11-01 1995-12-19 Corning Incorporated High modulus glass-ceramics containing fine grained spinel-type crystals

Also Published As

Publication number Publication date
DE69409424T2 (de) 1998-11-19
EP0626353A1 (de) 1994-11-30
CN1042827C (zh) 1999-04-07
DE69422831T2 (de) 2000-08-17
JP2516553B2 (ja) 1996-07-24
DE69409424D1 (de) 1998-05-14
JPH06329440A (ja) 1994-11-29
CN1114954A (zh) 1996-01-17
EP0626353B1 (de) 1998-04-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee