Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-24T19:57:26.339Z Has data issue: false hasContentIssue false
  • English
  • Français

Parametric effects of low-temperature combustion synthesis of alumina

Published online by Cambridge University Press:  03 March 2011

Chien-Chong Chen  and
Kuan-Tung Huang
Chien-Chong Chen*
Affiliation:
Chaoramics Laboratory, Department of Chemical Engineering, National Chung Cheng University, Chia-Yi 621, Taiwan, Republic of China
Kuan-Tung Huang
Affiliation:
Chaoramics Laboratory, Department of Chemical Engineering, National Chung Cheng University, Chia-Yi 621, Taiwan, Republic of China
*
a) Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

The influences of parameters on the low-temperature combustion synthesis of alumina particles from reactant mixture of aluminum nitrate and combustion fuel were studied using the particle size of as-synthesized alumina particles as a performance index. First, when urea was used as combustion fuel, it produced a higher combustion temperature and a larger particle size than the case when carbohydrazide was the fuel. Next, the combustion in air yielded a flame propagating through the reactant mixture, in contrast to a flame simultaneously ruptured from the entire reactant when the combustion was conducted in nitrogen. The particle size of the product obtained in nitrogen was 40% smaller than that obtained in air. Increasing the heating temperature could increase the alumina particle size due to the sintering effect, while combustion failed if the heating temperature was too small. The addition of diluent, excess fuel, and gas-releasing agents reduced the particle size. The increase of stirring speed also reduced the particle size. Next, if the reactant density (the amount of reactant mixture in the reacting container) was below a certain threshold value, the combustion failed to ignite. Increasing the reactant density was found to reduce the particle size due to the simultaneous reduction of combustion time and temperature. Finally, a liquid–gas reaction model was proposed and solved to study the threshold of combustion parameters.

Keywords

Combustion synthesisNanoparticle
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 2 , February 2005 , pp. 424 - 431
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Anuradha, T.V., Ranganathan, S. and Mimani, T.: Combustion synthesis of nanostructured barium titanate. Scripta Mater. 44, 2237 (2001).CrossRefGoogle Scholar
2.Poth, J., Haberkorn, R. and Beck, H.P.: Combustion-synthesis of SrTiO3. Part II. Sintering behaviour and surface characterization. J. Eur. Ceram. Soc. 20, 703 (2000).CrossRefGoogle Scholar
3.Luo, S., Tang, Z., Yao, W. and Zhang, Z.: Low-temperature combustion synthesis and characterization of nanosized tetragonal barium titanate powders. Microelectron. Eng. 66, 147 (2003).CrossRefGoogle Scholar
4.Dhas, N. Arul and Patil, K.C.: Combustion synthesis and properties of fine particle spinel mangaites. J. Solid State Chem. 102, 440 (1993).CrossRefGoogle Scholar
5.Aruna, S.T., Muthuraman, M. and Patil, K.C.: Studies on strontium substituted rare earth manganites. Solid State Ionics 120, 275 (1999).Google Scholar
6.Sekar, M.M.A., Halliyal, A. and Patil, K.C.: Synthesis, characterization, and properties of lead-based relaxor ferroelectrics. J. Mater. Res. 11, 1210 (1996).CrossRefGoogle Scholar
7.Kingsley, J.J., Suresh, K. and Patil, K.C.: Combustion synthesis of fine-particle metal aluminates. J. Mater. Sci. 25, 1305 (1990).CrossRefGoogle Scholar
8.Fumo, D.A., Morelli, M.R. and Segadaes, A.M.: Combustion synthesis of calcium aluminates. Mater. Res. Bull. 31, 1243 (1996).CrossRefGoogle Scholar
9.Chandran, R. Gopi, Patil, K.C. and Chandrappa, G.T.: Combustion synthesis and properties of mullite-zirconia composites. J. Mater. Sci. 31, 5773 (1996).CrossRefGoogle Scholar
10.Aruna, S.T. and Patil, K.C.: Combustion synthesis and properties of nanostructured ceria-zirconia solid solutions. Nanostruct. Mater. 10, 955 (1998).CrossRefGoogle Scholar
11.Aruna, S.T., Muthuraman, M. and Patil, K.C.: Studies on combustion synthesized LaMnO3-LaCoO3 solid solutions. Mater. Res. Bull. 35, 289 (2000).CrossRefGoogle Scholar
12.Patil, K.C., Aruna, S.T. and Ekambaram, S.: Combustion synthesis. Curr. Opin. Solid State Mater. Sci. 2, 158 (1997).Google Scholar
13.Kingsley, J.J. and Patil, K.C.: Novel combustion process for the synthesis of fine particle alpha-alumina and related oxide materials. Mater. Lett. 6, 427 (1988).Google Scholar
14.Cullity, B.D.: Elements of X-ray Diffraction,Addison-Wesley series in Metallurgy and Materials (Addison-Wesley, Reading, MA, 1978), p. 102.Google Scholar