TY  - 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 . .

TY  - JOUR
AU  - Matović, Branko
AU  - Rixecker, Georg
AU  - Bošković, Snežana B.
AU  - Aldinger, Fritz
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3103
AB  - This paper deals with the densification and phase transformation of Si3N4 with additives of Li-exchanged zeolite during pressureless sintering at significantly reduced temperatures. Dilatometric shrinkage data show that the first liquid forms as low as 1080 degrees C. Upon sintering at 1500 degrees C the bulk density increases to more than 95% of the theoretical density without phase transformation from alpha-S3N4 to beta-Si3N4, i.e. the phase transformation lags behind the densification process. Above 1500 degrees C the secondary phase is completely converted into a glass and the alpha-to-beta transformation takes place. Under these conditions the grain growth is anisotropic, leading to a microstructure which has potential for enhanced fracture toughness. The results show that a very effective low-temperature sintering additive for silicon nitride can be obtained from Li-exchanged zeolite.
T2  - International Journal of Materials Research
T1  - Sintering of Si3N4 with Li-exchanged zeolite additive
VL  - 97
IS  - 9
SP  - 1264
EP  - 1267
DO  - 10.3139/146.101367
ER  - 

@article{
author = "Matović, Branko and Rixecker, Georg and Bošković, Snežana B. and Aldinger, Fritz",
year = "2006",
abstract = "This paper deals with the densification and phase transformation of Si3N4 with additives of Li-exchanged zeolite during pressureless sintering at significantly reduced temperatures. Dilatometric shrinkage data show that the first liquid forms as low as 1080 degrees C. Upon sintering at 1500 degrees C the bulk density increases to more than 95% of the theoretical density without phase transformation from alpha-S3N4 to beta-Si3N4, i.e. the phase transformation lags behind the densification process. Above 1500 degrees C the secondary phase is completely converted into a glass and the alpha-to-beta transformation takes place. Under these conditions the grain growth is anisotropic, leading to a microstructure which has potential for enhanced fracture toughness. The results show that a very effective low-temperature sintering additive for silicon nitride can be obtained from Li-exchanged zeolite.",
journal = "International Journal of Materials Research",
title = "Sintering of Si3N4 with Li-exchanged zeolite additive",
volume = "97",
number = "9",
pages = "1264-1267",
doi = "10.3139/146.101367"
}

Matović, B., Rixecker, G., Bošković, S. B.,& Aldinger, F.. (2006). Sintering of Si3N4 with Li-exchanged zeolite additive. in International Journal of Materials Research, 97(9), 1264-1267.
https://doi.org/10.3139/146.101367

Matović B, Rixecker G, Bošković SB, Aldinger F. Sintering of Si3N4 with Li-exchanged zeolite additive. in International Journal of Materials Research. 2006;97(9):1264-1267.
doi:10.3139/146.101367 .

Matović, Branko, Rixecker, Georg, Bošković, Snežana B., Aldinger, Fritz, "Sintering of Si3N4 with Li-exchanged zeolite additive" in International Journal of Materials Research, 97, no. 9 (2006):1264-1267,
https://doi.org/10.3139/146.101367 . .