Paper Titles
In Situ Synthesis of Rod-Like Tielite / Alumina Ceramic Composites via Mechanical Activation
p.111
Improving the Microstructure of Si3N4-TiN Composites Using Ammonium Citrate to Disperse Raw TiO2 Powders
p.115
Size Control of TiO2 Nanoparticles Prepared by Oxidative Pyrolysis of Liquid-Mist Precursors in RF Thermal Plasma
p.119
Metal-Ceramic Composites Prepared through In Situ Decomposition of Transition Metal Nitrides
p.125
Preparation and Characterization of Ta3N5 Nanoparticles
p.129
Improvement of Oxidation Resistance of Graphite Powder Treated with Phosphate
p.133
Innovation in SiAlON Ceramics
p.137
Seeds Innovation and Bearing Applications of Silicon Nitride Ceramics
p.147
Recent Developments in SiAlON Research in New Zealand
p.153

Preparation and Characterization of Ta3N5 Nanoparticles

Article Preview

Abstract:

In this paper, we reported the preparation of nanocrystalline Ta3N5 particles by nitridation of Ta2O5 nanoparticles using NH3 as reactant gas. It was found that nanocrystalline Ta2O5 was converted into Ta3N5 completely at 700°C within 5.0 h, which was much lower than the temperature 850°C for the complete nitridation of micron-sized Ta2O5 powder. The resulting nitride was characterized by X-ray diffraction analysis (XRD) and field emission scanning electron microscopy (FE-SEM). The nitrogen contents in the prepared Ta3N5 powders were quantitatively determined with CHN elemental analyzer and thermogravimetry and differential scanning calorimetry (TG-DSC). The color of nanocrystalline Ta3N5 is in fresh red while the one of micrometer-sized Ta3N5 is in dark red.

You might also be interested in these eBooks
Innovation in Ceramic Science and Engineering View Preview

Info:

Periodical:

Key Engineering Materials (Volume 352)

Pages:

129-132

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.352.129

Citation:

Cite this paper

Online since:

August 2007

Authors:

Qing Hong Zhang, Lian Gao

Keywords:

Gas-Solid Synthesis, Nitridation, Semiconductor, Tantalum Nitride

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] J. Shin, D. -H. Ahn, M. -S. Shin and Y. -S. Kim: J. Am. Ceram. Soc. Vol. 83 (2000), p.1021.

Google Scholar

[2] S.M. Bradshaw and J.L. Spicer: J. Am. Ceram. Soc. Vol. 82 (1999), p.2293.

Google Scholar

[3] R. Marchand, F. Tessier and F. J. Disalvo: J. Mater. Chem. Vol. 9 (1999), p.297.

Google Scholar

[4] C.M. Fang, E. Orhan, G.A. de Wijs, H.T. Hintzen, R. A. de Groot, R. Marchand, J. -Y. Saillard and G. de. With: J. Mater. Chem. Vol. 11 (2001), p.1248.

DOI: 10.1039/b005751g

Google Scholar

[5] M. Hara, G. Hitoki, T. Tanaka, J.N. Hondo, H. Kobayashi and K. Domen: Catal. Today Vol. 78 (2003), p.555.

Google Scholar

[6] M. Jansen, H.P. Letschert and D. Speer, European Patent 592, 876. (1993).

Google Scholar

[7] E. Orhan, F. Tessier and R. Marchand: Solid State Science Vol. 4 (2002), p.1071.

Google Scholar

[8] M. Kerlau, O. Merdrignac-Conanec, M. Guilloux-Viry and A. Perrin: Solid State Science Vol. 6 (2004), p.101.

DOI: 10.1016/j.solidstatesciences.2003.10.010

Google Scholar

[9] Q.H. Zhang and L. Gao: Langmuir Vol. 20 (2004), p.9821.

Google Scholar