http://www.cnr.it/ontology/cnr/individuo/prodotto/ID43532
Sintering and mechanical properties of ZrB2-TaSi2 and HfB2-TaSi2 ceramic composites (Articolo in rivista)
- Type
- Label
- Sintering and mechanical properties of ZrB2-TaSi2 and HfB2-TaSi2 ceramic composites (Articolo in rivista) (literal)
- Anno
- 2008-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1111/j.1551-2916.2008.02593.x (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Diletta Sciti; Laura Silvestroni; Giancarlo Celotti; Cesare Melandri; Stefano Guicciardi (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://onlinelibrary.wiley.com/doi/10.1111/j.1551-2916.2008.02593.x/pdf (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- In: Journal of the American Ceramic Society, vol. 91 (10) pp. 3285 - 3291. Blackwell Publishing, 2008. (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- CNR-ISTEC, Institute of Science and Technology for Ceramics, Via Granarolo 64, I-48018 Faenza, Italy (literal)
- Titolo
- Sintering and mechanical properties of ZrB2-TaSi2 and HfB2-TaSi2 ceramic composites (literal)
- Abstract
- Fully dense fine-grained ZrB2- and HfB2-based composites contaning 15 vol% TaSi2 were produced by hot pressing at 1850-1900°C. Gas formation and mass loss, which occurred during sintering in both systems, were in agreement with thermodynamic predictions. In both composites, the presence of a solid solution formed by the diffusion of tantalum into the boride matrix was observed. The HfB2-based composite was harder (22 GPa), stiffer (528 GPa), and tougher (4.1M Pa .m1/2) than the ZrB2-based composite. Although the room-temperature flexural strength of the ZrB2-based composite (830 MPa) was higher than that of the HfB2-based composite (700 MPa), the opposite was true at 1200°C and 1500°C. Contrary to the significant strength decrease observed for the ZrB2-based materials at elevated temperature, the HfB2 composite retained ~86% of its room temperature strength up to 1500°C (~600 MPa). (literal)
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