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Synthesis and pressureless sintering of Ti3SiC2 powder

Published online by Cambridge University Press:  31 January 2011

B.B. Panigrahi ,
Min-Cheol Chu ,
A. Balakrishnan  and
Seong-Jai Cho
Seong-Jai Cho*
Affiliation:
Division of Advanced Technology, Korea Research Institute of Standards and Science, Yuseong, Daejeon, 305-340, Republic of Korea
*
b) Address all correspondence to these authors. e-mail: [email protected]
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Abstract

Ti3SiC2 powder of about 96 wt% purity was produced using TiCx and Si powders. The synthesis process was characterized by an exothermic reaction at ∼985 °C and low activation energy (∼27 kJ/mol) of conversion. Almost complete conversion to Ti3SiC2 phase was observed during sintering. The onset temperature of sintering was found to be at about 1060 °C using dilatometer. The density of nearly 99% (theoretical) was achieved through the pressureless sintering of Ti3SiC2 powder by 1 and 2 wt% Si powder additions. The sample (without sintering aid) sintered at 1500 °C for 4 h showed uniformly distributed angular grains, whereas the bimodal nature of the microstructure was observed when Si was added as a sintering aid.

Keywords

Cold isostatic pressing (CIP)Powder processingSintering
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 2 , February 2009 , pp. 487 - 492
Copyright
Copyright © Materials Research Society 2009

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