Title:
VIBRATION GRINDING OF SILICON CARBIDE
Document Type and Number:
Japanese Patent JPS61274751
Kind Code:
A
Abstract:
A method for reducing the particle size of an initial silicon carbinde powder to a milled powder having an average particle size of below 1 micron but greaterthan an average of about 0.2 2 micron, without grinding media contamination. The method comprises milling the larger particles in a vibratory mill in the presence of sintered silicon carbide media comprising silicon carbide pellets having both curved and flat surfaces and a maximum dimension of from about 0.5 to 5 centimetres. The grinding occurs in the presence of a fluid, preferably a liquid, for a sufficient time and at a sufficient vibrational energy to obtain said milled powder having such smaller average particle size. At least 90% of the pellets in the silicon carbide media have a specific gravity (density) greater than 3.05 g/cm3.The invention includes the unique media, which may be used for various grinding operations, and includes unique milled powders. One of the unique powders has particles which have an average length to width ratio of greater than 2.5. Another of the unique powders is black silicon carbide containing from 200 to 2,000 parts per million of aluminium in solid solution.
Inventors:
TADEUSU EMU KORUZEKUWA
KAARU HIYUUZU MAKUMAATORII
UORUFUGANGU DEI JII BETSUKAA
KAARU HIYUUZU MAKUMAATORII
UORUFUGANGU DEI JII BETSUKAA
Application Number:
JP8123386A
Publication Date:
December 04, 1986
Filing Date:
April 10, 1986
Export Citation:
Assignee:
KENNECOTT CORP
International Classes:
B02C17/14; B02C17/20; (IPC1-7): B02C17/14; B02C17/20
Attorney, Agent or Firm:
Heiyoshi Odashima