STRENGTH OF SINTERED ALUMINA AT LOW-TEMPE RATURE DUE TO BALL MILL ABRASION POWDER SEEDING

Authors
YOSHIZAWA Y TORIYAMA M KANZAKI S SAITO F
Citation
Y. Yoshizawa et al., STRENGTH OF SINTERED ALUMINA AT LOW-TEMPE RATURE DUE TO BALL MILL ABRASION POWDER SEEDING, Nippon Seramikkusu Kyokai gakujutsu ronbunshi, 106(4), 1998, pp. 444-446
Citations number
5
Categorie Soggetti
Material Science, Ceramics
Journal title
Nippon Seramikkusu Kyokai gakujutsu ronbunshi → ACNP
ISSN journal
09145400
Volume
106
Issue
4
Year of publication
1998
Pages
444 - 446
Database
ISI
SICI code
0914-5400(1998)106:4<444:SOSAAL>2.0.ZU;2-L
Abstract
Sinterability of low-temperature calcined alpha-alumina powder and the bending strength of sintered bodies were investigated, The at-alumina powder was made hom commercial aluminum hydroxide with seeding of abr asion powder worn in the wet ball milling. The low-temperature calcine d cr-alumina powder was very fine and achieved the density of more tha n 3.8 Mg/m(3) by hot pressing at 1200 degrees C. The microstructure of the sample sintered at low temperature was composed of very fine equi axial grains in spite of low purity. The bending strength of this samp le was more than 800 MPa.