Al2O3-10 vol.% YAG and Al2O3-10 vol.% ZrO2 bi-phase composites as well as Al2O3-5 vol.% YAG-5 vol.% ZrO2 tri-phase composite were developed by controlled sur- face modification of an alumina powder with inorganic pre- cursors of the second phases. Green bodies were produced by dry pressing and slip casting and then sintered at 1500 °C. In particular, slip casting led to fully dense, defect-free, and highly homogenous samples, made of a fine dispersion of the second phases into the micronic alumina matrix, as observed by SEM. The mechanical characterization proved the pre- dominant role of the final density on the Vickers hardness, while the elastic modulus was affected by the volume fraction of the constituent phases, in fairly good agreement with the rule of mixture prediction. The fracture toughness values of the bi- and tri-phase materials were similar, and their crack paths revealed the importance of the thermal residual stresses at the matrix-reinforcement interfaces, promoting inter- granular propagations
Elaboration and mechanical characterization of multi-phase alumina-based ultra-fine composites / P., Palmero; Sola, Antonella; V., Naglieri; Bellucci, Devis; M., Lombardi; Cannillo, Valeria. - In: JOURNAL OF MATERIALS SCIENCE. - ISSN 0022-2461. - STAMPA. - 47(2012), pp. 1077-1084. [10.1007/s10853-011-5898-5]
Data di pubblicazione: | 2012 | |
Titolo: | Elaboration and mechanical characterization of multi-phase alumina-based ultra-fine composites | |
Autore/i: | P., Palmero; Sola, Antonella; V., Naglieri; Bellucci, Devis; M., Lombardi; Cannillo, Valeria | |
Autore/i UNIMORE: | ||
Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/s10853-011-5898-5 | |
Rivista: | ||
Volume: | 47 | |
Pagina iniziale: | 1077 | |
Pagina finale: | 1084 | |
Codice identificativo ISI: | WOS:000298326900058 | |
Codice identificativo Scopus: | 2-s2.0-84855560870 | |
Citazione: | Elaboration and mechanical characterization of multi-phase alumina-based ultra-fine composites / P., Palmero; Sola, Antonella; V., Naglieri; Bellucci, Devis; M., Lombardi; Cannillo, Valeria. - In: JOURNAL OF MATERIALS SCIENCE. - ISSN 0022-2461. - STAMPA. - 47(2012), pp. 1077-1084. [10.1007/s10853-011-5898-5] | |
Tipologia | Articolo su rivista |
File in questo prodotto:
Pubblicazioni consigliate

I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris