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US 7,255,809 B2Granted
Polishing slurry for texturing
AssigneeNihon Micro Coating Co., Ltd.
InventorsYuji Horie, Hiromitsu Okuyama
Life of this patent
Estimating the term…
Abstract
Polishing slurry for texturing the surface of a magnetic hard disk substrate has abrading particles with diameters in the range of 1-10 nm dispersed in a dispersant such as water and a water-based aqueous solution. The abrading particles may be monocrystalline diamond particles, polycrystalline diamond particles or cluster particles with monoerystalline and polycrystalline diamond particles.
Claims9
Polishing slurry for texturing a surface of a magnetic hard disk substrate, said polishing slurry comprising:
- abrading particles that are cluster particles with corners comprising monocrystalline diamond particles with diameters in the range of 1-10 nm said cluster particles being tasseled assemblies of crystalline particles with no directionality;
- and
- a dispersant for said abrading particles selected from the group consisting of water and water-based aqueous solutions.
Dependencies are inferred from the claim text.