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Study on the Thermodynamics and Kinetics in the Combustion Reaction between Titanium and Boron Powders

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Abstract:

Combustion synthesis of titanium diboride(TiB2) from titanium(Ti) and boron(B) powders was studied by theoretical calculation and experimental analysis. In high temperature range or in low temperature range, the calculated activation energies are 140KJ/mol or 355KJ/mol respectively, which is described by a change from dissolution-precipitation controlled process to diffusion-controlled process. With the increase of particle size of the raw materials, combustion temperature and propagating rate will both reduce. The propagating rate decreases with the addition of diluents. Further increase of diluents may result in a stop of the combustion wave halfway or even a failure of ignition.

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Periodical:

Key Engineering Materials (Volume 351)

Pages:

189-194

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.351.189

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Online since:

October 2007

Authors:

K. Wang, Zheng Yi Fu, Wei Min Wang, Yu Cheng Wang, H. Wang, Jin Yong Zhang, Qing Jie Zhang

Keywords:

Combustion Reaction, Kinetic, Thermodynamic, Titanium Diboride

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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