Si3N4-Al2O3-TiC-Y2O3 composites intended for the edges of cutting tools

Authors
Szafran, M Bobryk, E Kukla, D Olszyna, A
Citation
M. Szafran et al., Si3N4-Al2O3-TiC-Y2O3 composites intended for the edges of cutting tools, CERAM INT, 26(6), 2000, pp. 579-582
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
CERAMICS INTERNATIONAL
ISSN journal
02728842 → ACNP
Volume
26
Issue
6
Year of publication
2000
Pages
579 - 582
Database
ISI
SICI code
0272-8842(2000)26:6<579:SCIFTE>2.0.ZU;2-6
Abstract
This paper is concerned with the synthesis of composites in the Si3N4-Al2O3 -TiC-Y2O3 system. The materials obtained have a high density and a good fra cture toughness (K-IC = 9.3 MPa root m). Machining tests show that the serv ice life of the tool blades made of these composites may even he tenfold lo nger than that of commercial blades made of Si3N4 with an additon of Al2O3, MgO and Y2O3. (C) 2000 Elsevier Science Ltd and Techna S.r.l. All rights r eserved.