Synthesis of Boron Carbide from Boric Acid and Carbon-Containing Precursors
Electronic Archive of Sumy State University
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Synthesis of Boron Carbide from Boric Acid and Carbon-Containing Precursors
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| Creator |
Zakharova, K.
Mednikova, A. Rumyantsev, V. Genusova, T. |
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| Subject |
Boron carbide
Powder Synthesis Phenol-formaldehyde resin Sucrose Starch Preceramic polymer |
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| Description |
The paper compares low-temperature techniques for boron carbide synthesis. Boron carbide was syn-thesized via reaction between boric acid and various carbon precursors, e.g. phenol-formaldehyde resin, su-crose, carbon black, and potato starch. Initial compositions and carbon precursor preparation techniques were selected for synthesis. The resulting products were characterized by IR spectrometry, X-ray diffrac-tion (XRD) and scanning electron microscopy. Possible boron carbide yields up to 95 % of the theoretical yield as calculated from initial boron contents at temperatures of 1550 oС were demonstrated. XRD con-firmed that the synthesized boron carbide (B4C) has a rhombohedral crystalline structure. Final product morphology may be tailored, ranging from isometric to needle-like crystallite morphology. Nanopowders as processed via high-energy milling may be further used as sintering additive for processing of boron carbide ceramics.
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| Publisher |
Sumy State University
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| Date |
2014-06-03T09:13:10Z
2014-06-03T09:13:10Z 2013 |
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| Type |
Article
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| Identifier |
Synthesis of Boron Carbide from Boric Acid and Carbon-Containing Precursors [Текст] / K. Zakharova, A. Mednikova, V. Rumyantsev, T. Genusova // Nanomaterials: Applications & Properties (NAP-2013): 2-nd International conference, Alushta, the Crimea, September 17-22, 2012 / Edited by: A. Pogrebnjak. - Sumy: Sumy State University, 2013. - V.2, No3. - 03AET09
http://essuir.sumdu.edu.ua/handle/123456789/35601 |
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| Language |
en
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