MY169261A - Method for manufacturing magnetic-disk glass substrate and method for manufacturing magnetic disk - Google Patents

Method for manufacturing magnetic-disk glass substrate and method for manufacturing magnetic disk

Info

Publication number
MY169261A
MY169261A MYPI2014702333A MYPI2014702333A MY169261A MY 169261 A MY169261 A MY 169261A MY PI2014702333 A MYPI2014702333 A MY PI2014702333A MY PI2014702333 A MYPI2014702333 A MY PI2014702333A MY 169261 A MY169261 A MY 169261A
Authority
MY
Malaysia
Prior art keywords
glass substrate
polishing
disk
manufacturing magnetic
abrasive grains
Prior art date
Application number
MYPI2014702333A
Inventor
Yoshihiro Tawara
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 MY169261A publication Critical patent/MY169261A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
    • B24B37/042—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor
    • B24B37/044—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor characterised by the composition of the lapping agent
    • 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

Abstract

The present invention provides a method for manufacturing a magnetic-disk glass substrate capable of reducing the number of surface defects such as small scratches, performing polishing processing using abrasive grains without reducing the polishing rate, and manufacturing a high-quality glass substrate that can be used as a next-generation substrate. In the present invention, in a polishing step of polishing main surfaces of a glass substrate (1) containing SiO2 as a main component and a divalent alkali earth metal by holding the glass substrate (1) between a pair of surface plates (5, 6) that have surfaces provided with polishing pads (7) and supplying a polishing liquid containing abrasive grains between the glass substrate (1) and the polishing pads (7), the abrasive grains are made of colloidal silica, and the polishing liquid is adjusted so as to be in an acidic range and contains aluminum ions. (Fig. 1)
MYPI2014702333A 2012-02-29 2013-02-28 Method for manufacturing magnetic-disk glass substrate and method for manufacturing magnetic disk MY169261A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012044882 2012-02-29

Publications (1)

Publication Number Publication Date
MY169261A true MY169261A (en) 2019-03-20

Family

ID=49082807

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2014702333A MY169261A (en) 2012-02-29 2013-02-28 Method for manufacturing magnetic-disk glass substrate and method for manufacturing magnetic disk

Country Status (5)

Country Link
JP (1) JP6266504B2 (en)
CN (1) CN104137182B (en)
MY (1) MY169261A (en)
SG (1) SG11201405080XA (en)
WO (1) WO2013129619A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6330628B2 (en) * 2013-11-11 2018-05-30 旭硝子株式会社 Manufacturing method of glass substrate
KR102450333B1 (en) * 2016-05-19 2022-10-04 주식회사 동진쎄미켐 Chemical mechanical polishing slurry composition
US11098224B2 (en) 2016-11-23 2021-08-24 Hoya Corporation Method for polishing glass substrate, method for manufacturing glass substrate, method for manufacturing magnetic-disk glass substrate, method for manufacturing magnetic disk, polishing liquid, and method for reducing cerium oxide
CN113502393A (en) * 2021-06-22 2021-10-15 赖石胜 Method for leaching rare earth in ion adsorption type rare earth original mountain ore

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE107913T1 (en) * 1990-05-23 1994-07-15 Baccarat Cristalleries METHOD OF REDUCING LEAD MIGRATION FROM A CRYSTAL BOTTLE TO A LIQUID CONTAINED IN THAT BOTTLE.
JP4141514B2 (en) * 1996-11-26 2008-08-27 株式会社フジミインコーポレーテッド Rinse composition
EP1287088B1 (en) * 2000-05-12 2011-10-05 Nissan Chemical Industries, Ltd. Polishing composition
JP2002133649A (en) * 2000-10-19 2002-05-10 Nippon Sheet Glass Co Ltd Substrate for information recording medium and its manufacturing method
JP2002288823A (en) * 2002-03-14 2002-10-04 Nippon Sheet Glass Co Ltd Manufacturing method of substrate for information record medium
JP4135906B2 (en) * 2003-03-18 2008-08-20 日本ミクロコーティング株式会社 Polishing slurry and method
JP5435394B2 (en) * 2007-06-08 2014-03-05 日本電気硝子株式会社 Tempered glass substrate and manufacturing method thereof
MY155778A (en) * 2010-04-01 2015-11-30 Hoya Corp Manufacturing method of a glass substrate for a magnetic disk

Also Published As

Publication number Publication date
JP6266504B2 (en) 2018-01-24
SG11201405080XA (en) 2014-11-27
CN104137182B (en) 2017-12-12
WO2013129619A1 (en) 2013-09-06
CN104137182A (en) 2014-11-05
JPWO2013129619A1 (en) 2015-07-30

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