Effect of LiYO(2) addition on sintering behavior and indentation properties of silicon nitride ceramics
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2006
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The influence of the sintering additive LiYO(2) (5-15 wt.%) on sintering behavior, microstructure and mechanical properties of Si(3)N(4) ceramics was investigated. Since LiYO(2) enables densification of Si(3)N(4) at extraordinarily low temperatures, sintering was carried out in the range from 1200-1700 degrees C. Densification was found to be enhanced with increasing additive content due to an increasing volume fraction of the liquid. The phase transformation and grain growth occurred through a solution-reprecipitation mechanism, where the precipitation took place preferentially on pre-existing beta-Si(3)N(4) nuclei (of which the starting powder already contained 20 wt.%). The indentation fracture toughness increased with both sintering time and additive content as a result of the growth of elongated grains.
Ključne reči:
silicon nitride / LiYO(2) additive / densification / phase transformation / microstructureIzvor:
International Journal of Materials Research, 2006, 97, 9, 1268-1272Finansiranje / projekti:
- Ministry of Science and Environmetal Protection of Serbia
- Max-Planck-Gesellschaft
DOI: 10.3139/146.101368
ISSN: 1862-5282
WoS: 000241402700013
Scopus: 2-s2.0-33750043491
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Institucija/grupa
VinčaTY - JOUR AU - Matović, Branko AU - Rixecker, Georg AU - Bošković, Snežana B. AU - Aldinger, Fritz PY - 2006 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3104 AB - The influence of the sintering additive LiYO(2) (5-15 wt.%) on sintering behavior, microstructure and mechanical properties of Si(3)N(4) ceramics was investigated. Since LiYO(2) enables densification of Si(3)N(4) at extraordinarily low temperatures, sintering was carried out in the range from 1200-1700 degrees C. Densification was found to be enhanced with increasing additive content due to an increasing volume fraction of the liquid. The phase transformation and grain growth occurred through a solution-reprecipitation mechanism, where the precipitation took place preferentially on pre-existing beta-Si(3)N(4) nuclei (of which the starting powder already contained 20 wt.%). The indentation fracture toughness increased with both sintering time and additive content as a result of the growth of elongated grains. T2 - International Journal of Materials Research T1 - Effect of LiYO(2) addition on sintering behavior and indentation properties of silicon nitride ceramics VL - 97 IS - 9 SP - 1268 EP - 1272 DO - 10.3139/146.101368 ER -
@article{ author = "Matović, Branko and Rixecker, Georg and Bošković, Snežana B. and Aldinger, Fritz", year = "2006", abstract = "The influence of the sintering additive LiYO(2) (5-15 wt.%) on sintering behavior, microstructure and mechanical properties of Si(3)N(4) ceramics was investigated. Since LiYO(2) enables densification of Si(3)N(4) at extraordinarily low temperatures, sintering was carried out in the range from 1200-1700 degrees C. Densification was found to be enhanced with increasing additive content due to an increasing volume fraction of the liquid. The phase transformation and grain growth occurred through a solution-reprecipitation mechanism, where the precipitation took place preferentially on pre-existing beta-Si(3)N(4) nuclei (of which the starting powder already contained 20 wt.%). The indentation fracture toughness increased with both sintering time and additive content as a result of the growth of elongated grains.", journal = "International Journal of Materials Research", title = "Effect of LiYO(2) addition on sintering behavior and indentation properties of silicon nitride ceramics", volume = "97", number = "9", pages = "1268-1272", doi = "10.3139/146.101368" }
Matović, B., Rixecker, G., Bošković, S. B.,& Aldinger, F.. (2006). Effect of LiYO(2) addition on sintering behavior and indentation properties of silicon nitride ceramics. in International Journal of Materials Research, 97(9), 1268-1272. https://doi.org/10.3139/146.101368
Matović B, Rixecker G, Bošković SB, Aldinger F. Effect of LiYO(2) addition on sintering behavior and indentation properties of silicon nitride ceramics. in International Journal of Materials Research. 2006;97(9):1268-1272. doi:10.3139/146.101368 .
Matović, Branko, Rixecker, Georg, Bošković, Snežana B., Aldinger, Fritz, "Effect of LiYO(2) addition on sintering behavior and indentation properties of silicon nitride ceramics" in International Journal of Materials Research, 97, no. 9 (2006):1268-1272, https://doi.org/10.3139/146.101368 . .