DE69409424D1 - Glaskeramik für Magnetplatten-Substrate und Verfahren zu ihrer Herstellung - Google Patents
Glaskeramik für Magnetplatten-Substrate und Verfahren zu ihrer HerstellungInfo
- Publication number
- DE69409424D1 DE69409424D1 DE69409424T DE69409424T DE69409424D1 DE 69409424 D1 DE69409424 D1 DE 69409424D1 DE 69409424 T DE69409424 T DE 69409424T DE 69409424 T DE69409424 T DE 69409424T DE 69409424 D1 DE69409424 D1 DE 69409424D1
- Authority
- DE
- Germany
- Prior art keywords
- manufacture
- magnetic disk
- glass ceramic
- disk substrates
- substrates
- 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
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)
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 |
---|---|
DE69409424D1 true DE69409424D1 (de) | 1998-05-14 |
DE69409424T2 DE69409424T2 (de) | 1998-11-19 |
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 Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69422831T Expired - Fee Related DE69422831T2 (de) | 1993-05-19 | 1994-05-17 | Glaskeramik für Magnetplatten-Substrate |
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)
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)
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 |
-
1993
- 1993-05-19 JP JP5139989A patent/JP2516553B2/ja not_active Expired - Fee Related
-
1994
- 1994-05-17 DE DE69422831T patent/DE69422831T2/de not_active Expired - Fee Related
- 1994-05-17 DE DE69409424T patent/DE69409424T2/de not_active Expired - Fee Related
- 1994-05-17 EP EP94107585A patent/EP0626353B1/de not_active Expired - Lifetime
- 1994-07-11 CN CN94108224A patent/CN1042827C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69409424T2 (de) | 1998-11-19 |
EP0626353A1 (de) | 1994-11-30 |
DE69422831D1 (de) | 2000-03-02 |
CN1042827C (zh) | 1999-04-07 |
DE69422831T2 (de) | 2000-08-17 |
JP2516553B2 (ja) | 1996-07-24 |
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 |