Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
FRACTURE-BEHAVIOR OF AL2O3 SIC-PLATELET COMPOSITES/
Autore:
BELMONTE M; MOYA JS; MIRANZO P; NGUYEN D; DUBOIS J; FANTOZZI G;
Indirizzi:
CSIC,INST CERAM & VIDRIO ARGANDA 28500 MADRID SPAIN INSA,CNRS,URA 341,GEMPPM F-69921 VILLEURBANNE FRANCE
Titolo Testata:
Journal of materials research
fascicolo: 10, volume: 11, anno: 1996,
pagine: 2528 - 2535
SICI:
0884-2914(1996)11:10<2528:FOASC>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLATELET ALUMINA COMPOSITES; WHISKER-REINFORCED ALUMINA; SILICON-CARBIDE WHISKERS; MECHANICAL-PROPERTIES; TOUGHENING MECHANISMS; TEMPERATURE; TOUGHNESS; AL2O3;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
M. Belmonte et al., "FRACTURE-BEHAVIOR OF AL2O3 SIC-PLATELET COMPOSITES/", Journal of materials research, 11(10), 1996, pp. 2528-2535

Abstract

Mechanical behavior of hot-pressed SiC platelet reinforced alumina composites has been analyzed as a function of SiC platelet content for two different alumina matrix powders. Fracture toughness and flexural strength at temperatures ranging from 25 to 1200 degrees C, R-curve behavior, and thermal shock resistance have been determined. Small differences in the impurity content of the starting Al2O3 powders strongly determine the microstructure and the mechanical behavior of Al2O3/SiC-platelet composites. Low alkali content alumina led to composites with large matrix grain size which presented spontaneous microcracking. At high temperature, a high viscosity liquid phase is formed that shieldscracks enhancing mechanical properties and R-curve behavior. A small amount of impurities reduced Al2O3 matrix grain size and avoided spontaneous microcracking. Enhanced fracture toughness (up to 30%) at room temperature, R-curve behavior, and thermal shock resistance were achieved for these materials.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 05:06:05