MY193182A - Polishing composition for magnetic disk substrate, method for producing magnetic disk substrate, and method for polishing same - Google Patents
Polishing composition for magnetic disk substrate, method for producing magnetic disk substrate, and method for polishing sameInfo
- Publication number
- MY193182A MY193182A MYPI2017701045A MYPI2017701045A MY193182A MY 193182 A MY193182 A MY 193182A MY PI2017701045 A MYPI2017701045 A MY PI2017701045A MY PI2017701045 A MYPI2017701045 A MY PI2017701045A MY 193182 A MY193182 A MY 193182A
- Authority
- MY
- Malaysia
- Prior art keywords
- magnetic disk
- disk substrate
- polishing
- polishing composition
- abrasive
- Prior art date
Links
- 238000005498 polishing Methods 0.000 title abstract 5
- 239000000758 substrate Substances 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 3
- 230000001186 cumulative effect Effects 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Provided is a magnetic disk substrate polishing composition capable of combining a high polishing rate and reduction of waviness with the use of a silica abrasive. This application provides a magnetic disk substrate polishing composition comprising an abrasive that comprises silica particles, and water. The abrasive has a cumulative 90th percentile aspect ratio (A90) of 1.25 or higher in the abrasive?s aspect ratio distribution by volume, and has a cumulative 50th percentile aspect ratio (A50) of 1.25 or lower in the same aspect ratio distribution.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016071365A JP6637817B2 (en) | 2016-03-31 | 2016-03-31 | Composition for polishing magnetic disk substrate, method for manufacturing magnetic disk substrate and polishing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MY193182A true MY193182A (en) | 2022-09-26 |
Family
ID=60006259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MYPI2017701045A MY193182A (en) | 2016-03-31 | 2017-03-27 | Polishing composition for magnetic disk substrate, method for producing magnetic disk substrate, and method for polishing same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6637817B2 (en) |
| MY (1) | MY193182A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7262197B2 (en) * | 2018-09-28 | 2023-04-21 | 株式会社フジミインコーポレーテッド | Polishing composition and its use |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012155785A (en) * | 2011-01-25 | 2012-08-16 | Showa Denko Kk | Method for manufacturing substrate for magnetic recording medium |
| JP6259182B2 (en) * | 2012-12-12 | 2018-01-10 | 株式会社フジミインコーポレーテッド | Polishing liquid for primary polishing of magnetic disk substrate with nickel phosphorus plating |
| JP5853117B1 (en) * | 2014-06-30 | 2016-02-09 | 花王株式会社 | Polishing liquid composition for magnetic disk substrate |
-
2016
- 2016-03-31 JP JP2016071365A patent/JP6637817B2/en active Active
-
2017
- 2017-03-27 MY MYPI2017701045A patent/MY193182A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017182859A (en) | 2017-10-05 |
| JP6637817B2 (en) | 2020-01-29 |
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