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Journal of Inorganic Materials

Journal of Inorganic Materials >

2009 , Vol. 24 >Issue 3: 623 - 626

DOI: https://doi.org/10.3724/SP.J.1077.2009.00623

Research Paper

Combustion Synthesis of Ti3SiC2 in Air from 3Ti/Si/2C/0.2Al Powder Mixtures

  • LIANG Bao-Yan ,
  • WANG Ming-Zhi ,
  • SUN Jin-Feng ,
  • HAN Xin ,
  • LI Xiao-Pu
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  • Key Laboratory of Metastable Materials Science & Technology, Yanshan University,Qinhuangdao 066004, China

Received date: 2008-09-12

  Revised date: 2008-12-12

  Online published: 2009-05-20

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Abstract

Ti3SiC2 based material was successfully synthesized by self combustion in air using mechanically activated 3Ti/Si/2C/0.2Al powders as starting materials. Phase composition and microstructure of the material were characterized by means of XRD and SEM, the composition of sample was determined through EDX. Mechanical alloying of 3Ti/Si/2C/0.2Al powder mixtures may refine the powder particles and produce the severe lattice distortion, which significantly improves the reaction activities of the powders. When the powder mixture is exposed to the air, it self-ignited spontaneously and self-propagating high temperature synthesis (SHS) of titanium silicon carbide (Ti3SiC2) is induced. After cooling, a porous sample is obtained. The sample is composed of Ti3SiC2,TiC and tiny amounts of oxide. The content of Ti3SiC2 in the sample is about 83wt%. Surface of the sample is relatively uniform and dense, but the fracture is rough and porous. Surface layer of the sample consists mainly of Al2O3 and TiO2 grains with a size of 24μm. The oxidation film thickness is 510μm. The inner of the sample is a mixture of Ti3SiC2 and TiC. Lath Ti3SiC2 grains are 2040μm in length and 24μm in width. TiC grains are about 3μm in dimension.

Key words： Ti3SiC2; mechanical activation; combustion synthesis

Cite this article

LIANG Bao-Yan , WANG Ming-Zhi , SUN Jin-Feng , HAN Xin , LI Xiao-Pu . Combustion Synthesis of Ti3SiC2 in Air from 3Ti/Si/2C/0.2Al Powder Mixtures[J]. Journal of Inorganic Materials, 2009 , 24(3) : 623 -626 . DOI: 10.3724/SP.J.1077.2009.00623

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