Abrasive tool making process – material – or composition – Miscellaneous
Patent
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.
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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.
Dixon Jr. William R.
Thompson Willie J.
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