Creep of nanocrystalline Y-SZP ceramics

Authors
Gutierrez-Mora, F Dominguez-Rodriguez, A Jimenez-Melendo, M Chaim, R Hefetz, M
Citation
F. Gutierrez-mora et al., Creep of nanocrystalline Y-SZP ceramics, NANOSTR MAT, 11(4), 1999, pp. 531-537
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
NANOSTRUCTURED MATERIALS
ISSN journal
09659773 → ACNP
Volume
11
Issue
4
Year of publication
1999
Pages
531 - 537
Database
ISI
SICI code
0965-9773(199906)11:4<531:CONYC>2.0.ZU;2-Q
Abstract
Fully dense nanocrystalline Yttria-Partially Stabilized Zirconia with a gra in size of 40 nm has been crept in compression at temperatures ranged betwe en 1100 degrees C and 1200 degrees C and strain rates between 5 x 10(-7) s( -1) and 10(-4) s(-1). The creep parameters n = 1.4 and Q = 660 kJ/mol were obtained and the microstructure was observed before and after deformation. The microscopic features and macroscopic parameters showed that these nanoc rystalline ceramics probably cannot be deformed superplastically. (C)1999 A cta Metallurgica Inc.