Low density silicon nitride-containing beads, aggregates thereof

Details Low density silicon nitride-containing beads, aggregates thereof Low density silicon nitride-containing beads, aggregates thereof

1996-11-04

1997-09-09

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

With subsequent uniting of the particles

264 5, 264 13, B29B 900

Patent

active

056652798

ABSTRACT:
A sintered bead that includes at least 95% by weight silicon nitride, based on the total weight of the bead, and has a bulk density no greater than about 60% of theoretical density. The invention further features aggregates prepared from a plurality of such beads, as well as methods for preparing the beads and aggregates.

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