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Production of submicron silicon carbide powders by attrition milling.

Stanley-DA; Sadler-LY III
Proc 2D Int'l Conf Symp Electrochem Soc Electrotherm and Met Div Boston Pp 331-336 :331-336
An attrition milling process developed by the Bureau of Mines has been employed to produce submicrometer oxide and carbide powders. Lower energy requirements and improved properties are anticipated in forming these powders into sintered ceramic bodies. This paper describes sic milling studies employing coarse rounded sic and coarse ottawa sand grinding media. Particle sizes less than 1 micrometer were achieved in approximately 1/4 hour, and particle sizes about 0.1 Micrometer were achieved in 2 hours of milling. The average rate of surface area generation in this powder for the first 3 hours of milling is 8 square meters per gram per hour for both silicon carbide and ottawa sand media.
Publication Date
Document Type
OP; Conference/Symposia Proceedings
Fiscal Year
NTIS Accession No.
NTIS Price
Identifying No.
OP 152-74
Source Name
Proc. 2D Int'l. Conf., Symp. Electrochem. Soc., Electrotherm. and Met. Div., Boston, Pp 331-336