Abrasive tool making process – material – or composition – Miscellaneous
Patent
1986-05-30
1988-10-04
Lieberman, Paul
Abrasive tool making process, material, or composition
Miscellaneous
51308, 51309, B24D 300
Patent
active
047753935
ABSTRACT:
A method for grinding silicon carbide to a submicron powder which comprises grinding a silicon carbide feed material having an average particle size of between 1 and 200 microns in a liquid slurry in a contamination free high energy autogenous attrition mill in the presence of silicon carbide 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 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 is then further treated so that the average particle size is less than one micron and so that 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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Bulletin 670 of the U.S. Dept. of Interior, "Communication by the Attrition Grinding Process", Stanczyk et al., U.S. Govt. Printing Office 1981-332-076.
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Boecker Wolfgang D. G.
Korzekwa Tadeusz M.
Curatolo Joseph G.
Dunn Michael L.
Evans Larry W.
Lieberman Paul
The Standard Oil Company
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