APPLICATION OF HIGH-ENERGY GRINDING FOR THE ACTIVATION OF SINTERING OF SILICON-NITRIDE POWDER

Authors
MATVIICHUK VN PANICHKINA VV
Citation
Vn. Matviichuk et Vv. Panichkina, APPLICATION OF HIGH-ENERGY GRINDING FOR THE ACTIVATION OF SINTERING OF SILICON-NITRIDE POWDER, Soviet powder metallurgy and metal ceramics, 31(11), 1992, pp. 987-990
Citations number
4
Categorie Soggetti
Material Science, Ceramics","Metallurgy & Mining
Journal title
Soviet powder metallurgy and metal ceramics → ACNP
ISSN journal
00385735
Volume
31
Issue
11
Year of publication
1992
Pages
987 - 990
Database
ISI
SICI code
0038-5735(1992)31:11<987:AOHGFT>2.0.ZU;2-Y
Abstract
Grinding of silicon nitride powder of the PS grade with additions of y ttrium and aluminum oxides in a high-energy centrifugal-planetary mill is studied, where the grinding is accelerated by using balls to 20g a nd 40g acceleration. It is shown that the powder dispersion increases from 0.6 to 10-15 m2/g due to the grinding. The ground powders are ver y active during sintering. The relative density of the material is 97% at 1700-degrees-C and a nitrogen pressure of 1 MPa.