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A. ŠAPONJIĆ1,* , B. MATOVIĆ1, B. BABIĆ1
A carbothermal reduction and nitridation process (CRN) was employed to prepare Si3N4-SiC nanocomposite powder [1-4]. Diatomaceous earth from Serbian deposite was used as Si precursor in the synthesis of nanocomposite powder by mixing with commercial sugar as reduscing agent. Purified diatomaceous earth with pre-determined C/SiO2 ratio of 5 yuilded Si3N4-SiC nanocomposite powder. The XRD (Rietveld analysis) was employed to evaluate Si3N4/SiC ratio of the obtained powder after CRN. Also IR and SEM analysis were used to determine morphology and chemical composistion. The results show that the optimally temperature was 1450 °C, which is wery low, compared to the classical synthesis process.
Carbothermal reduction, Diatomaceous earth, Nitridation, Si3N4, SiC.
A. ŠAPONJIĆ, B. MATOVIĆ, B. BABIĆ, Cost-effective synthesis of Si3N4-SiC nanocomposite powder, Optoelectronics and Advanced Materials - Rapid Communications, 4, 11, November 2010, pp.1681-1684 (2010).
Submitted at: Aug. 6, 2010
Accepted at: Nov. 10, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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