Abrasive composition and process for polishing

Details Abrasive composition and process for polishing Abrasive composition and process for polishing

1989-03-30

1990-05-29

Lieberman, Paul

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

51293, 51303, 106 3, B24D 302

Patent

active

049292579

ABSTRACT:
An abrasive composition comprising: an aluminous abrasive, preferably having an average particle size of 0.5-10 .mu.m and a concentration of 1 to 25% by weight; nickel sulfamate and/or sulfate, preferably having a concentration of 0.5 to 10% by weight; magnesium nitrate, preferably having a concentration of 0.1 to 12% by weight and water, the composition preferably having a pH of 4 to 7. This abrasive composition produces a superior effect, particularly a reduction of protrusions and pits and deep scratches when used for polishing an aluminum-based substrate for a magnetic recording disc.

REFERENCES:
patent: 4226623 (1980-10-01), Koshiyama et al.
patent: 4358295 (1982-11-01), Namba et al.
patent: 4451269 (1984-05-01), Makedomski et al.
patent: 4645561 (1987-02-01), Rea
patent: 4696697 (1987-09-01), Kitano et al.
patent: 4705566 (1987-11-01), Senda et al.
patent: 4769073 (1988-09-01), Tastu et al.
patent: 4853000 (1989-08-01), Potter

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