Process for gas polishing sapphire and the like

Details Process for gas polishing sapphire and the like Process for gas polishing sapphire and the like

1975-09-04

1977-07-26

Van Horn, Charles E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

65 32, 252 791, 264 82, C09K 1300

Patent

active

040381170

ABSTRACT:
A process for polishing surfaces of sapphire or similar materials to remove surface imperfections visible at magnifications of 1,000X or higher regardless of the shape of the surface, is disclosed, which process comprises the steps of heating the material to an elevated temperature and exposing the surface to be polished to a static hydrogen environment.

REFERENCES:
patent: 3026177 (1962-03-01), Pierre et al.
patent: 3546036 (1970-12-01), Manaseuit
patent: 3808065 (1974-04-01), Robinson et al.
patent: 3855024 (1974-12-01), Lim
patent: 3878005 (1975-04-01), Warren et al.

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