Metal polishing composition and process

Details Metal polishing composition and process Metal polishing composition and process

1983-10-28

1984-10-09

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

51307, 51317, 156645, 156664, 156903, 252 791, C23F 100, B44C 122, C03C 1500, C03C 2506

Patent

active

044759819

ABSTRACT:
Metal surfaces such as the working surfaces of nickel plated blanks for rigid memory discs are polished in a two-stage process of rough and finish polishing by a combination of mechanical and chemical mechanisms. Each stage involves a plurality of cycles in which the surface is polished using a rotating polishing pad with an aqueous suspension of aluminum oxide containing a lubricant-surfactant and a chlorine-containing oxidizing agent present at the surface-pad interface followed by the addition of an aqueous colloidal aluminum oxide sol to the oxidizing agent-containing suspension at the interface which frees the chlorine in the oxidizing agent to exert a chemical polishing action on the surface.

REFERENCES:
patent: 3342652 (1967-09-01), Reisman et al.
patent: 3429080 (1969-02-01), Lachapelle
patent: 4011099 (1977-03-01), Gutsche
patent: 4305779 (1981-12-01), Steeves et al.
patent: 4412886 (1983-11-01), Sakaguchi et al.

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