MY170842A - Hdd glass substrate - Google Patents

Hdd glass substrate

Info

Publication number
MY170842A
MY170842A MYPI2014701597A MYPI2014701597A MY170842A MY 170842 A MY170842 A MY 170842A MY PI2014701597 A MYPI2014701597 A MY PI2014701597A MY PI2014701597 A MYPI2014701597 A MY PI2014701597A MY 170842 A MY170842 A MY 170842A
Authority
MY
Malaysia
Prior art keywords
glass substrate
na2o
hdd glass
hdd
aho3
Prior art date
Application number
MYPI2014701597A
Inventor
Kajita Hiroshi
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 MY170842A publication Critical patent/MY170842A/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
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
    • 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
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
    • C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
    • 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
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
    • 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

Abstract

A HDD glass substrate of the present invention is characterized in that it includes a glass composition having, by mo!%, the following content range: 60% to 75% of SiO2; 0.1 % to 6% of AhO3; 0% to 3% of B2O3; 0.1 % to 5% of LhO; 0.1 % to 6% of Na2O; 0.1% to 5% of K2O; 5% to 18% of MgO; 0.1% to 10% of CaO; 0% to 5% of ZnO; 0% to 5% of TiO2; and 0.1% to 5% of ZrO2, the glass composition satisfying the following conditions: 0.01 < (ZrO2 + TiO2)/(SiO2 + AhO3 + B2O3) < 0.15; 0.1 < Li20/(LhO + Na2O + K2O) < 0.8; and 0.3 mol% < (Li2O + Na2O + K2O) < 15 mol%.
MYPI2014701597A 2011-12-20 2012-12-10 Hdd glass substrate MY170842A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011278407 2011-12-20

Publications (1)

Publication Number Publication Date
MY170842A true MY170842A (en) 2019-09-10

Family

ID=48668344

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2014701597A MY170842A (en) 2011-12-20 2012-12-10 Hdd glass substrate

Country Status (5)

Country Link
JP (1) JP6084577B2 (en)
CN (1) CN104145305B (en)
MY (1) MY170842A (en)
SG (1) SG11201402808VA (en)
WO (1) WO2013094450A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11161769B2 (en) 2016-09-16 2021-11-02 Corning Incorporated High transmission glasses with alkaline earth oxides as a modifier

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4161509B2 (en) * 1999-04-13 2008-10-08 旭硝子株式会社 Glass for information recording medium substrate and glass substrate for information recording medium
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
CN1650353B (en) * 2002-06-03 2012-05-30 Hoya株式会社 Glass substrate for information recording media and information recording medium
WO2004041740A1 (en) * 2002-11-07 2004-05-21 Hoya Corporation Substrate for information recording medium, information recording medium and method for manufacturing same
JP4716245B2 (en) * 2004-11-11 2011-07-06 日本電気硝子株式会社 Glass substrate and manufacturing method thereof
WO2007142324A1 (en) * 2006-06-08 2007-12-13 Hoya Corporation Glass for use as substrate for information recording medium, substrate for information recording medium, information recording medium, and their production methods
WO2011096310A1 (en) * 2010-02-03 2011-08-11 コニカミノルタオプト株式会社 Glass substrate for information recording medium, method for producing glass substrate for information recording medium, and information recording medium
WO2011125477A1 (en) * 2010-03-31 2011-10-13 Hoya株式会社 Method of manufacturing glass blank for magnetic recording medium glass substrate, method of manufacturing magnetic recording medium glass substrate, and method of manufacturing magnetic recording medium
JP5528907B2 (en) * 2010-05-31 2014-06-25 Ｈｏｙａ株式会社 Glass substrate for heat-assisted recording medium

Also Published As

Publication number Publication date
CN104145305B (en) 2016-11-23
JPWO2013094450A1 (en) 2015-04-27
SG11201402808VA (en) 2014-10-30
JP6084577B2 (en) 2017-02-22
WO2013094450A1 (en) 2013-06-27
CN104145305A (en) 2014-11-12

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