Low-temperature synthetic route for boron carbide powder from boric acid-citric acid gel precursor
Abstract
Boron carbide powder was synthesized by sol-gel polycondensation of boric acid with citric acid. The starting materials of Serbian origin were dissolved in water and mixed homogeneously until a precomposite gel was formed, which was converted into cryogels after freeze-drying. Pyrolysing and subsequent heat treatment of these cryogels resulted in boron carbide materials. Characterization by nitrogen adsorption showed that the precomposite cryogels and the composite powders were micro and mesoporous materials with large surface areas. Materials have been analyzed by means of X-ray diffraction and scanning electron microscopy. The Rietveld refinement was employed to get the structural information of the synthesized powder. The results show that the obtained carbide powder is composed of nearly equiaxed particles of narrow size distribution.
Keywords:
boron carbide / low-temperature synthetic route / rietveld refinement / sol-gel / precursorSource:
Materials Science Forum, 2007, 555, 255-Funding / projects:
- Nanostrukturni neoksidni keramički i karbonski materijali i njihovi kompoziti (RS-MESTD-MPN2006-2010-142016)
Note:
- Research Trends in Contemporary Materials Science, 8th Conference of the Yugoslav-Materials-Research-Society (Yu-MRS), Sep 04-08, 2006, Herceg Novi, Montenegro
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Institution/Community
VinčaTY - CONF AU - Kosanovic, Dj. AU - Milovanović, Ljiljana M. AU - Milovanović, S. AU - Šaponjić, Aleksandra PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6689 AB - Boron carbide powder was synthesized by sol-gel polycondensation of boric acid with citric acid. The starting materials of Serbian origin were dissolved in water and mixed homogeneously until a precomposite gel was formed, which was converted into cryogels after freeze-drying. Pyrolysing and subsequent heat treatment of these cryogels resulted in boron carbide materials. Characterization by nitrogen adsorption showed that the precomposite cryogels and the composite powders were micro and mesoporous materials with large surface areas. Materials have been analyzed by means of X-ray diffraction and scanning electron microscopy. The Rietveld refinement was employed to get the structural information of the synthesized powder. The results show that the obtained carbide powder is composed of nearly equiaxed particles of narrow size distribution. C3 - Materials Science Forum T1 - Low-temperature synthetic route for boron carbide powder from boric acid-citric acid gel precursor VL - 555 SP - 255 DO - 10.4028/www.scientific.net/MSF.555.255 ER -
@conference{ author = "Kosanovic, Dj. and Milovanović, Ljiljana M. and Milovanović, S. and Šaponjić, Aleksandra", year = "2007", abstract = "Boron carbide powder was synthesized by sol-gel polycondensation of boric acid with citric acid. The starting materials of Serbian origin were dissolved in water and mixed homogeneously until a precomposite gel was formed, which was converted into cryogels after freeze-drying. Pyrolysing and subsequent heat treatment of these cryogels resulted in boron carbide materials. Characterization by nitrogen adsorption showed that the precomposite cryogels and the composite powders were micro and mesoporous materials with large surface areas. Materials have been analyzed by means of X-ray diffraction and scanning electron microscopy. The Rietveld refinement was employed to get the structural information of the synthesized powder. The results show that the obtained carbide powder is composed of nearly equiaxed particles of narrow size distribution.", journal = "Materials Science Forum", title = "Low-temperature synthetic route for boron carbide powder from boric acid-citric acid gel precursor", volume = "555", pages = "255", doi = "10.4028/www.scientific.net/MSF.555.255" }
Kosanovic, Dj., Milovanović, L. M., Milovanović, S.,& Šaponjić, A.. (2007). Low-temperature synthetic route for boron carbide powder from boric acid-citric acid gel precursor. in Materials Science Forum, 555, 255. https://doi.org/10.4028/www.scientific.net/MSF.555.255
Kosanovic D, Milovanović LM, Milovanović S, Šaponjić A. Low-temperature synthetic route for boron carbide powder from boric acid-citric acid gel precursor. in Materials Science Forum. 2007;555:255. doi:10.4028/www.scientific.net/MSF.555.255 .
Kosanovic, Dj., Milovanović, Ljiljana M., Milovanović, S., Šaponjić, Aleksandra, "Low-temperature synthetic route for boron carbide powder from boric acid-citric acid gel precursor" in Materials Science Forum, 555 (2007):255, https://doi.org/10.4028/www.scientific.net/MSF.555.255 . .