Method of polishing a surface of a noble metal

Details Method of polishing a surface of a noble metal Method of polishing a surface of a noble metal

1994-03-16

1997-06-10

Rose, Robert A.

Abrading

Abrading process

Utilizing fluent abradant

451 28, B24B 100

Patent

active

056370288

ABSTRACT:
Method of polishing a surface (5a) of a noble metal or an alloy comprising mainly noble metal, in which a polishing means is moved across the surface while exerting a polishing pressure for obtaining a plane and smooth polished surface without any defects. A composition comprising demineralized water with 20 to 40% by weight of an organic liquid comprising a poly-alcohol or a derivative thereof, for example, glycerol, and particles which can be encapsulated and have a Knoop's hardness of between 5 and 50 GPa, for example Al.sub.2 O.sub.3 grains, is used as a polishing means.

REFERENCES:
patent: 3955213 (1976-05-01), Brower et al.
patent: 4358295 (1982-11-01), Namba et al.
patent: 4475981 (1984-10-01), Rea
patent: 5133159 (1992-07-01), Nelson
patent: 5136818 (1992-08-01), Bramson
patent: 5182881 (1993-02-01), Cox et al.

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