Superpolishing agent, process for polishing hard ceramic materia

Details Superpolishing agent, process for polishing hard ceramic materia Superpolishing agent, process for polishing hard ceramic materia

1991-07-22

1992-09-22

Dixon, Jr., William R.

Abrasive tool making process, material, or composition

Miscellaneous

51308, 51309, 106 3, 106 6, B24D 1700

Patent

active

051493381

ABSTRACT:
A process for superpolishing hard ceramic substrates, and super polished substrates having surface finishes below about 20 angstroms RMS. The process comprises applying a pitch to a lap tool and forming channels in the pitch. The pitch is wetted with a polishing compound comprising colloidal alumina and powder of a substance harder than that being polished. The substrate is brought into contact with the wetted pitch, and a relative motion is applied thereto to polish the substrate.

REFERENCES:
patent: 4225349 (1980-09-01), Koshiyama et al.
patent: 4242842 (1981-01-01), Yancey
patent: 4270932 (1981-06-01), Perovetz et al.
patent: 4935039 (1990-06-01), Miyazaki
patent: 4952240 (1990-08-01), Smith
patent: 5000761 (1991-03-01), Mayton et al.

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