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Preparation of nanostructured titanium carbonitride particles by Mg-thermal reduction

Published online by Cambridge University Press:  01 April 2005

D.W. Lee
Affiliation:
Nano P/M Group, Korea Institute of Machinery and Materials (KIMM), Kyungnam 641-010, Korea
J.H. Ahn
Affiliation:
Division of Chemical & Materials Engineering, Ajou University, Kyoungki 441-749, Korea
B.K. Kim
Affiliation:
Nano P/M Group, Korea Institute of Machinery and Materials (KIMM), Kyungnam 641-010, Korea
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Abstract

Nanostructured titanium carbonitride (TiC0.5N0.5) powders were synthesized by a Mg-thermal reduction process. The evaporated liquid solution made from TiCl4 + ¼C2Cl4 reacted with liquid magnesium protected with nitrogen gas. The extremely fine titanium carbonitride particles of about 50 nm were successfully produced by the reaction of Ti and C atoms released from chloride reduction with liquid magnesium and nitrogen gas. After the reduction process, the residual phases of MgCl2 and the excess Mg were removed by mechanical vacuum conditions. To obtain the maximized stoichiometry of product, the process optimization with thermodynamic study was performed with various experimental parameters such as reaction temperatures and solution feeding rates.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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References

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