Creep behavior of SiC whisker-reinforced Si3N4/BN fibrous monolithic ceramics

Authors
Li, SQ Huang, Y Wang, CG Luo, YM Zou, LH Li, CW
Citation
Sq. Li et al., Creep behavior of SiC whisker-reinforced Si3N4/BN fibrous monolithic ceramics, J EUR CERAM, 21(6), 2001, pp. 841-845
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN journal
09552219 → ACNP
Volume
21
Issue
6
Year of publication
2001
Pages
841 - 845
Database
ISI
SICI code
0955-2219(200106)21:6<841:CBOSWS>2.0.ZU;2-5
Abstract
The flexural creep behavior of SiC-whisker reinforced hot-pressed Si3N4/BN fibrous monolithic ceramics in the temperature range 1000-1200 degreesC and stress range 250-600 MPa were characterized. Creep curves generally showed extensive primary and lack of tertiary creep. The creep and fracture mecha nism were mainly controlled by the BN interlayer. BN began to oxidise at 12 00 degreesC and decreased the creep resistance. Meanwhile SiC whisker pulli ng-out improved the creep resistance. Microscopic damage mechanisms were in vestigated by SEM. (C) 2001 Elsevier Science Ltd. All rights reserved.