Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon
Само за регистроване кориснике
2023
Аутори
Šaponjić, AleksandraIlić, Svetlana
Barudžija, Tanja
Radosavljević-Mihajlović, Ana S.
Kokunešoski, Maja
Matović, Branko
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In this paper, the effects of the addition of silicon nitride seeds on the phase composition, particle size, and shape of silicon nitride powders obtained by carbothermal reduction-nitridation were studied. Environmentally friendly natural raw material, diatomaceous earth, was used as a Si precursor. Three different carbon sources were used: activated carbon, carbonized sucrose, and carbon cryogel as reducing agents in the molar ratio C/SiO2 = 5. To obtain better-quality Si3N4 powder, the commercial α-Si3N4 powder was added into starting mixtures as seeds in four different quantities. The X-ray diffraction, specific surface area, infrared spectroscopy with Fourier transform, and scanning electron microscopy were employed to characterize the obtained powders. Sucrose as a carbon source enables a major reduction of SiO2 and the onset of β-Si3N4 crystallization at a lower temperature (1350 °C) as well as the complete absence of diatomaceous earth relics. It indicates that the carbothermal... reduction-nitridation takes place faster in contrast to the other two carbon sources.
Кључне речи:
Carbothermal reduction / Diatomaceous earth / Nitridation / Seeds / Silicon nitrideИзвор:
Journal of the Australian Ceramic Society, 2023, 59, 823-835Финансирање / пројекти:
Колекције
Институција/група
VinčaTY - JOUR AU - Šaponjić, Aleksandra AU - Ilić, Svetlana AU - Barudžija, Tanja AU - Radosavljević-Mihajlović, Ana S. AU - Kokunešoski, Maja AU - Matović, Branko PY - 2023 UR - https://vinar.vin.bg.ac.rs/handle/123456789/10852 AB - In this paper, the effects of the addition of silicon nitride seeds on the phase composition, particle size, and shape of silicon nitride powders obtained by carbothermal reduction-nitridation were studied. Environmentally friendly natural raw material, diatomaceous earth, was used as a Si precursor. Three different carbon sources were used: activated carbon, carbonized sucrose, and carbon cryogel as reducing agents in the molar ratio C/SiO2 = 5. To obtain better-quality Si3N4 powder, the commercial α-Si3N4 powder was added into starting mixtures as seeds in four different quantities. The X-ray diffraction, specific surface area, infrared spectroscopy with Fourier transform, and scanning electron microscopy were employed to characterize the obtained powders. Sucrose as a carbon source enables a major reduction of SiO2 and the onset of β-Si3N4 crystallization at a lower temperature (1350 °C) as well as the complete absence of diatomaceous earth relics. It indicates that the carbothermal reduction-nitridation takes place faster in contrast to the other two carbon sources. T2 - Journal of the Australian Ceramic Society T1 - Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon VL - 59 SP - 823 EP - 835 DO - 10.1007/s41779-023-00876-w ER -
@article{ author = "Šaponjić, Aleksandra and Ilić, Svetlana and Barudžija, Tanja and Radosavljević-Mihajlović, Ana S. and Kokunešoski, Maja and Matović, Branko", year = "2023", abstract = "In this paper, the effects of the addition of silicon nitride seeds on the phase composition, particle size, and shape of silicon nitride powders obtained by carbothermal reduction-nitridation were studied. Environmentally friendly natural raw material, diatomaceous earth, was used as a Si precursor. Three different carbon sources were used: activated carbon, carbonized sucrose, and carbon cryogel as reducing agents in the molar ratio C/SiO2 = 5. To obtain better-quality Si3N4 powder, the commercial α-Si3N4 powder was added into starting mixtures as seeds in four different quantities. The X-ray diffraction, specific surface area, infrared spectroscopy with Fourier transform, and scanning electron microscopy were employed to characterize the obtained powders. Sucrose as a carbon source enables a major reduction of SiO2 and the onset of β-Si3N4 crystallization at a lower temperature (1350 °C) as well as the complete absence of diatomaceous earth relics. It indicates that the carbothermal reduction-nitridation takes place faster in contrast to the other two carbon sources.", journal = "Journal of the Australian Ceramic Society", title = "Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon", volume = "59", pages = "823-835", doi = "10.1007/s41779-023-00876-w" }
Šaponjić, A., Ilić, S., Barudžija, T., Radosavljević-Mihajlović, A. S., Kokunešoski, M.,& Matović, B.. (2023). Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon. in Journal of the Australian Ceramic Society, 59, 823-835. https://doi.org/10.1007/s41779-023-00876-w
Šaponjić A, Ilić S, Barudžija T, Radosavljević-Mihajlović AS, Kokunešoski M, Matović B. Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon. in Journal of the Australian Ceramic Society. 2023;59:823-835. doi:10.1007/s41779-023-00876-w .
Šaponjić, Aleksandra, Ilić, Svetlana, Barudžija, Tanja, Radosavljević-Mihajlović, Ana S., Kokunešoski, Maja, Matović, Branko, "Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon" in Journal of the Australian Ceramic Society, 59 (2023):823-835, https://doi.org/10.1007/s41779-023-00876-w . .