Abrasive tool making process – material – or composition – Miscellaneous
Patent
1988-10-03
1990-06-12
Lieberman, Paul
Abrasive tool making process, material, or composition
Miscellaneous
51307, 51308, 51309, B24D 300
Patent
active
049321668
ABSTRACT:
A method for grinding an oxygen sensitive ceramic material to a powder which comprises grinding an oxygen sensitive ceramic feed material having an average particle size of between 1 and 200 microns in a contamination free high energy autogenous attrition mill in non-oxidizing fluid in the presence of media for a sufficient time to obtain a specific surface area of at least 5 m.sup.2 /g and preferably at least 9 m.sup.2 /g. The media consists essentially of the same ceramic as the feed material is of high purity and has an average particle size of less than 4 mm and preferably less than 2.5 mm. the ground material may be further treated so that the average particle size is less than one micron and so that the greater than 97 numerical percent of the particles of the finished powder is smaller than 5 microns. The invention includes the finished powder.
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Boecker Wolfgang D. G.
Koppel Lewis M.
Korzekwa Tadeusz
Curatolo Joseph G.
Evans Larry W.
Lieberman Paul
Moxon II George W.
The Carborundum Company
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