DENSIFICATION OF ALUMINA AT 1250-DEGREES-C WITH MNO2 AND TIO2 ADDITIVES

Authors
ERKALFA H MISIRLI Z BAYKARA T
Citation
H. Erkalfa et al., DENSIFICATION OF ALUMINA AT 1250-DEGREES-C WITH MNO2 AND TIO2 ADDITIVES, Ceramics international, 21(5), 1995, pp. 345-348
Citations number
8
Categorie Soggetti
Material Science, Ceramics
Journal title
Ceramics international → ACNP
ISSN journal
02728842
Volume
21
Issue
5
Year of publication
1995
Pages
345 - 348
Database
ISI
SICI code
0272-8842(1995)21:5<345:DOAA1W>2.0.ZU;2-R
Abstract
The effects of MnO2 and TiO2 additions in 3 wt% MnO2 + (0.5, 1.5, 3.0) wt% TiO2 additive combinations on the sintering of alpha-Al2O3 have b een investigated. The microstructural development along with the micro hardness has been characterized. The Al2O3 + 3 wt% MnO2 + 0.5 wt% TiO2 system resulted in high densification (98% of the theoretical density ) giving a uniform grained microstructure and yielding a hardness valu e of 23.14 GPa at a sintering temperature as low as 1250 degrees C.