MY207777A - Polishing composition and method for producing magnetic disk substrate - Google Patents
Polishing composition and method for producing magnetic disk substrateInfo
- Publication number
- MY207777A MY207777A MYUI2023003189A MYUI2023003189A MY207777A MY 207777 A MY207777 A MY 207777A MY UI2023003189 A MYUI2023003189 A MY UI2023003189A MY UI2023003189 A MYUI2023003189 A MY UI2023003189A MY 207777 A MY207777 A MY 207777A
- Authority
- MY
- Malaysia
- Prior art keywords
- polishing composition
- water
- cleaning
- corrosion potential
- magnetic disk
- Prior art date
Links
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
To provide a polishing composition used for polishing of Ni-P substrates to allow effective reduction of the number of nano-defects. Provided is a polishing composition containing silica particles, an acid, an oxidant, a water-soluble polymer, a nitrogen-containing organic compound, and water. The polishing composition has a pH of 4.0 or lower. In an immersion-cleaning test in which a Ni-P substrate is immersed in the polishing composition, is then removed therefrom, is cleaned with water, and is subsequently cleaned with an alkaline aqueous solution, the polishing composition has a relationship between corrosion potential Ea (V) of the Ni-P substrate before immersed in the polishing composition, corrosion potential Eb (V) after cleaning with water, and corrosion potential Ec (V) after cleaning with the alkaline aqueous solution, the relationship satisfying: 0.012 V = (Eb - Ea) = 0.050 V; and -0.050 V = (Ec - Eb) = -0.005 V.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019021394A JP7373285B2 (en) | 2019-02-08 | 2019-02-08 | Polishing composition and magnetic disk substrate manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MY207777A true MY207777A (en) | 2025-03-18 |
Family
ID=72174240
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MYPI2020000664A MY200424A (en) | 2019-02-08 | 2020-02-06 | Polishing composition and method for producing magnetic disk substrate |
| MYUI2023003189A MY207777A (en) | 2019-02-08 | 2020-02-06 | Polishing composition and method for producing magnetic disk substrate |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MYPI2020000664A MY200424A (en) | 2019-02-08 | 2020-02-06 | Polishing composition and method for producing magnetic disk substrate |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7373285B2 (en) |
| MY (2) | MY200424A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7778472B2 (en) * | 2020-09-30 | 2025-12-02 | 株式会社フジミインコーポレーテッド | Polishing composition, method for polishing substrate, and method for manufacturing substrate |
| JP7587661B2 (en) * | 2022-11-17 | 2024-11-20 | 花王株式会社 | Polishing composition |
| CN118240485B (en) * | 2024-05-27 | 2024-08-16 | 嘉兴市小辰光伏科技有限公司 | Silicon wafer alkali polishing additive with cloud-shaped tower base and application method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000273445A (en) | 1998-11-17 | 2000-10-03 | Fujimi Inc | Polishing composition |
| JP2006080388A (en) | 2004-09-10 | 2006-03-23 | Nitta Haas Inc | Metal polishing composition |
| JP5769284B2 (en) | 2009-01-20 | 2015-08-26 | 花王株式会社 | Polishing liquid composition for magnetic disk substrate |
| JP6148858B2 (en) | 2012-12-28 | 2017-06-14 | 花王株式会社 | Polishing liquid composition for magnetic disk substrate |
| JP6243920B2 (en) * | 2013-09-28 | 2017-12-06 | Hoya株式会社 | Glass substrate manufacturing method and magnetic disk manufacturing method |
| JP6340267B2 (en) | 2013-12-03 | 2018-06-06 | 花王株式会社 | Manufacturing method of magnetic disk substrate |
-
2019
- 2019-02-08 JP JP2019021394A patent/JP7373285B2/en active Active
-
2020
- 2020-02-06 MY MYPI2020000664A patent/MY200424A/en unknown
- 2020-02-06 MY MYUI2023003189A patent/MY207777A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020128479A (en) | 2020-08-27 |
| JP7373285B2 (en) | 2023-11-02 |
| MY200424A (en) | 2023-12-26 |
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