Paper Title:
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.

  Info
Periodical
Edited by
Dragan P. Uskoković, Slobodan K. Milonjić and Dejan I. Raković
Pages
255-260
DOI
10.4028/www.scientific.net/MSF.555.255
Citation
D. Kosanović, L. Milovanović, S. Milovanović, A. Šaponjić, "Low-Temperature Synthetic Route for Boron Carbide Powder from Boric Acid-Citric Acid Gel Precursor", Materials Science Forum, Vol. 555, pp. 255-260, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Lin Yan Li, Song Zhe Chen, Sheng Ming Xu, Gang Xu
Abstract:Nanocrystalline tin oxide (S1) was prepared by using molten boric acid as a flux and was characterized by XRD, TEM, and BET analysis. Its...
1986
Authors: Mei Juan Li, Lian Meng Zhang, Z.D. Wei, Qiang Shen, Dong Ming Zhang
Abstract:Nano-sized turbostritic-BN (t-BN) was fabricated through chemical process using boric acid and urea in this work. By the same method, the...
197
Authors: S. Mondal, A.K. Banthia
Abstract:Polycondensations (condensation polymerization) are stepwise reactions between bifunctional or polyfunctional compoents, with elimination of...
199
Authors: Gilbert Silva, Erika Coaglia Trindade Ramos, N.S. da Silva, Alfeu Saraiva Ramos
Abstract:A large amount of the Ti6Si2B compound can be formed by mechanical alloying and subsequent heat treatment from the elemental...
147
Authors: Wen Zhou Sun, Yu Hong Chen, Fei Han, Liang Jiang
Optical/Electronic/Magnetic Materials
Abstract:SrAl2O4:Eu2+,Dy3+ long persistence phosphors are synthesized by combustion method. The effects of several...
2161