MY188043A - Glass substrate for information recording medium - Google Patents

Glass substrate for information recording medium

Info

Publication number
MY188043A
MY188043A MYPI2016700695A MYPI2016700695A MY188043A MY 188043 A MY188043 A MY 188043A MY PI2016700695 A MYPI2016700695 A MY PI2016700695A MY PI2016700695 A MYPI2016700695 A MY PI2016700695A MY 188043 A MY188043 A MY 188043A
Authority
MY
Malaysia
Prior art keywords
recording medium
information recording
glass substrate
sio2
mgo
Prior art date
Application number
MYPI2016700695A
Inventor
Noriko Shimazu
Hiroshi Kajita
Original Assignee
Hoya 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 Hoya Corp filed Critical Hoya Corp
Publication of MY188043A publication Critical patent/MY188043A/en

Links

Classifications

    • 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
    • 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)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

A glass substrate for an information recording medium of the present invention has a glass composition in which specific content ranges of constituent components are satisfied, and in mol%, the following conditions: SiO2+A12O3+B2O3: 67 to 82%; Li2O+Na2O+K2O: 8 to 20%; and MgO+CaO+SrO+BaO+ZnO: 10 to 28% are satisfied, and the following ratios: 0.85<SiO2/(SiO2+A12O3+B2O3)<0.95; 0.3<SLi2O/(Li2O+Na2O+K2O)<0.7; and 0.8<MgO/(MgO+CaO+SrO+BaO+ZnO)<0.99 are satisfied.
MYPI2016700695A 2013-08-30 2014-08-22 Glass substrate for information recording medium MY188043A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013179975 2013-08-30
PCT/JP2014/072008 WO2015029902A1 (en) 2013-08-30 2014-08-22 Glass substrate for information recording media

Publications (1)

Publication Number Publication Date
MY188043A true MY188043A (en) 2021-11-11

Family

ID=52586461

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2016700695A MY188043A (en) 2013-08-30 2014-08-22 Glass substrate for information recording medium

Country Status (5)

Country Link
JP (1) JP6052936B2 (en)
CN (1) CN105473520B (en)
MY (1) MY188043A (en)
SG (1) SG11201601369TA (en)
WO (1) WO2015029902A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018225725A1 (en) * 2017-06-09 2018-12-13 Hoya株式会社 Glass for information recording medium substrate, information recording medium substrate, and glass spacer for information recording medium and recording reproduction device
WO2021137950A2 (en) * 2019-11-26 2021-07-08 Corning Incorporated Magnesium aluminosilicate glasses with high fracture toughness
US11951713B2 (en) 2020-12-10 2024-04-09 Corning Incorporated Glass with unique fracture behavior for vehicle windshield

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0953549B1 (en) * 1998-04-28 2002-09-11 Asahi Glass Company Ltd. Plate glass and substrate glass for electronics
JP3995902B2 (en) * 2001-05-31 2007-10-24 Ｈｏｙａ株式会社 Glass substrate for information recording medium and magnetic information recording medium using the same
JP4530618B2 (en) * 2002-09-27 2010-08-25 コニカミノルタオプト株式会社 Glass composition and glass substrate
JP4430001B2 (en) * 2005-11-01 2010-03-10 湖州大享玻璃制品有限公司 Li2O-Al2O3-SiO2-MgO-K2O-F-based crystalline glass and crystallized glass, and method for producing the crystalline glass and crystallized glass
JP5699434B2 (en) * 2009-04-02 2015-04-08 旭硝子株式会社 Glass for information recording medium substrate, glass substrate for information recording medium and magnetic disk
WO2011037001A1 (en) * 2009-09-28 2011-03-31 コニカミノルタオプト株式会社 Glass substrate for information recording media and information recording medium
US8394516B2 (en) * 2010-10-29 2013-03-12 Hoya Corporation Glass substrate for magnetic recording medium and magnetic recording medium
JP5737043B2 (en) * 2011-07-29 2015-06-17 旭硝子株式会社 Substrate glass and glass substrate

Also Published As

Publication number Publication date
CN105473520B (en) 2018-11-06
CN105473520A (en) 2016-04-06
JP6052936B2 (en) 2016-12-27
WO2015029902A1 (en) 2015-03-05
SG11201601369TA (en) 2016-03-30
JPWO2015029902A1 (en) 2017-03-02

Similar Documents

Publication Publication Date Title
MY176222A (en) Glass for magnetic recording medium substrate and magnetic recording medium substrate
MY166878A (en) Glass for magnetic recording medium substrate and usage thereof
MY182802A (en) Glass substrate
MY154012A (en) Glass for data storage medium substrate, glass substrate for data storage medium and magnetic disk
MY177073A (en) Method for producing magnetic disk, and glass substrate for information recording medium
MY161708A (en) Glass for substrate, and glass substrate
SG165260A1 (en) Glass for information recording medium substrate, glass substrate for information recording medium and magnetic disk
MY156297A (en) Glass for magnetic recording medium substrate, magnetic recording medium substrate and method of manufacturing the same, and magnetic recording medium
WO2008156091A1 (en) Glass composition
MX2016009756A (en) A substrate provided with a coating based on a glass flux, glass flux material, and method for coating a glass or glass ceramic substrate.
WO2008156090A1 (en) Glass composition
SA517381900B1 (en) A Glass Fiber Composition, Glass Fiber and Composite Material Therefrom
SG10201403647PA (en) Alkali-free glass for magnetic recording medium and glass substrate for magnetic recording medium using same
SG10201403649WA (en) Alkali-free glass for magnetic recording medium and glass substrate for magnetic recording medium using same
FR2932475B1 (en) REFRACTORY PRODUCT HAVING A HIGH ZIRCONY CONTENT
MY169221A (en) Glass for magnetic recording medium substrate, glass substrate for magnetic recording medium, and their use
MY188043A (en) Glass substrate for information recording medium
SG10201403648QA (en) Alkali-free glass for magnetic recording medium and glass substrate for magnetic recording medium using same
SG10201403650TA (en) Alkali-free glass for magnetic recording medium and glass substrate for magnetic recording medium using same
JP2012214377A5 (en)
MY170842A (en) Hdd glass substrate
MY193093A (en) Glass wool, and vacuum heat insulation material using same
TW201129519A (en) SnO-P2O5-B2O3 series phase-separation glass, glass powder comprising SnO-P2O5-B2O3 series phase-separation glass, and method for preparing SnO-P2O5-B2O3 series phase-separation glass
RU2600235C1 (en) Glass
TH166389B (en) Glass for magnetic recording media base plate And magnetic recording media base plate