Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon
Authorized Users Only
2023
Authors
Šaponjić, A.Ilić, S.
Barudzija, T.
Radosavljević-Mihajlović, Ana

Kokunešoski, M.
Matović, Branko

Article (Published version)

Metadata
Show full item recordAbstract
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.
Keywords:
Silicon nitride / Seeds / Nitridation / Diatomaceous earth / Carbothermal reductionSource:
Journal of the Australian Ceramic Society, 2023Publisher:
- Springer
Funding / projects:
Collections
Institution/Community
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Šaponjić, A. AU - Ilić, S. AU - Barudzija, T. AU - Radosavljević-Mihajlović, Ana AU - Kokunešoski, M. AU - Matović, Branko PY - 2023 UR - https://ritnms.itnms.ac.rs/handle/123456789/652 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. PB - Springer T2 - Journal of the Australian Ceramic Society T1 - Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon DO - 10.1007/s41779-023-00876-w UR - conv_985 ER -
@article{ author = "Šaponjić, A. and Ilić, S. and Barudzija, T. and Radosavljević-Mihajlović, Ana and Kokunešoski, M. 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.", publisher = "Springer", journal = "Journal of the Australian Ceramic Society", title = "Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon", doi = "10.1007/s41779-023-00876-w", url = "conv_985" }
Šaponjić, A., Ilić, S., Barudzija, T., Radosavljević-Mihajlović, A., 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 Springer.. https://doi.org/10.1007/s41779-023-00876-w conv_985
Šaponjić A, Ilić S, Barudzija T, Radosavljević-Mihajlović A, 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;. doi:10.1007/s41779-023-00876-w conv_985 .
Šaponjić, A., Ilić, S., Barudzija, T., Radosavljević-Mihajlović, Ana, Kokunešoski, M., 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 (2023), https://doi.org/10.1007/s41779-023-00876-w ., conv_985 .