@article{
author = "Šaponjić, A. and Ilić, S. and Barudzija, T. and Radosavljević-Mihajlović, Ana 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.",
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"
}
