Influence of additive type on densfication and phase transformation of seeded Si3N4
Apstrakt
This paper deals with densification and alpha - GT p phase transformation Of Si3N4, with a constant beta-Si3N4 seeds concentration regarding sintering temperature and different additive types. The seeds Of beta-Si3N4 were obtained by sintering of silicon nitride in alpha-form and additive mixture consisting Of Y2O3 and SiO2. Two different Si3N4/additive mixtures (Y2O3 + Al2O3 and CeO2) containing constant amount of seeds were prepared and tested. Characterization of sintered samples involved phase analysis by X-ray diffraction and density measurements. The results indicated that in the presence of yttria-alumina mixture both the phase transformation and the densification were enhanced as compared to samples containing only CeO2 as a sintering additive. The reasons for observed behavior are discussed in detail.
Ključne reči:
additive type / densification process / beta- Si3N4 seeds / Si3N4 / sintering timeIzvor:
Materials Science Forum, 2005, 494, 429-434Napomena:
- Current Research in Advanced Materials and Processes, 6th Conference of the Yugoslav-Materials-Research-Society, Sep 13-17, 2004, Herceg Novi, Montenegro
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Vučković, Aleksandra AU - Matović, Branko AU - Bošković, Snežana B. PY - 2005 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6537 AB - This paper deals with densification and alpha - GT p phase transformation Of Si3N4, with a constant beta-Si3N4 seeds concentration regarding sintering temperature and different additive types. The seeds Of beta-Si3N4 were obtained by sintering of silicon nitride in alpha-form and additive mixture consisting Of Y2O3 and SiO2. Two different Si3N4/additive mixtures (Y2O3 + Al2O3 and CeO2) containing constant amount of seeds were prepared and tested. Characterization of sintered samples involved phase analysis by X-ray diffraction and density measurements. The results indicated that in the presence of yttria-alumina mixture both the phase transformation and the densification were enhanced as compared to samples containing only CeO2 as a sintering additive. The reasons for observed behavior are discussed in detail. T2 - Materials Science Forum T1 - Influence of additive type on densfication and phase transformation of seeded Si3N4 VL - 494 SP - 429 EP - 434 UR - https://hdl.handle.net/21.15107/rcub_vinar_6537 ER -
@article{ author = "Vučković, Aleksandra and Matović, Branko and Bošković, Snežana B.", year = "2005", abstract = "This paper deals with densification and alpha - GT p phase transformation Of Si3N4, with a constant beta-Si3N4 seeds concentration regarding sintering temperature and different additive types. The seeds Of beta-Si3N4 were obtained by sintering of silicon nitride in alpha-form and additive mixture consisting Of Y2O3 and SiO2. Two different Si3N4/additive mixtures (Y2O3 + Al2O3 and CeO2) containing constant amount of seeds were prepared and tested. Characterization of sintered samples involved phase analysis by X-ray diffraction and density measurements. The results indicated that in the presence of yttria-alumina mixture both the phase transformation and the densification were enhanced as compared to samples containing only CeO2 as a sintering additive. The reasons for observed behavior are discussed in detail.", journal = "Materials Science Forum", title = "Influence of additive type on densfication and phase transformation of seeded Si3N4", volume = "494", pages = "429-434", url = "https://hdl.handle.net/21.15107/rcub_vinar_6537" }
Vučković, A., Matović, B.,& Bošković, S. B.. (2005). Influence of additive type on densfication and phase transformation of seeded Si3N4. in Materials Science Forum, 494, 429-434. https://hdl.handle.net/21.15107/rcub_vinar_6537
Vučković A, Matović B, Bošković SB. Influence of additive type on densfication and phase transformation of seeded Si3N4. in Materials Science Forum. 2005;494:429-434. https://hdl.handle.net/21.15107/rcub_vinar_6537 .
Vučković, Aleksandra, Matović, Branko, Bošković, Snežana B., "Influence of additive type on densfication and phase transformation of seeded Si3N4" in Materials Science Forum, 494 (2005):429-434, https://hdl.handle.net/21.15107/rcub_vinar_6537 .