Synthesis of Porous Ti2SnC from TiH2-Sn-TiC/Graphite Powders in Tube Furnace

Zheng Yang Li; Li Bo Wang; Guo Cai Zhong; Sai Sai Li; Ai Guo Zhou

doi:10.4028/www.scientific.net/KEM.602-603.130

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 602-603Synthesis of Porous Ti2SnC from...

Synthesis of Porous Ti₂SnC from TiH₂-Sn-TiC/Graphite Powders in Tube Furnace

Abstract:

Titanium tin carbide (Ti₂SnC) is a member a MAX phases, which are ternary carbides or nitrides with layered structure. Ti powders are normally used as Ti source to synthesize Ti₂SnC. In this paper, TiH₂, a relative cheaper Ti source, was used to synthesize Ti₂SnC. Ti₂SnC was synthesized from TiH₂/Sn/TiC or TiH₂/Sn/graphite powders by a tube furnace at different temperatures under Ar atmosphere. From the analysis of X-ray diffraction results, the lowest temperature to synthesize Ti₂SnC was 1000 °C. Ti₂SnC content increased with temperature, and high purity Ti₂SnC was fabricated at 1200 °C. From scanning electron microscopy, as-synthesized Ti₂SnC from TiH₂/Sn/TiC was with plate-like structure. However, for Ti₂SnC from graphite as carbon source, there was some stripe microstructure. Some large pores existed between the Ti₂SnC particles. The existence of the pores make the mechanical properties of Ti₂SnC block significantly reduced, its compressive strength was only 0.483 MPa or 0.35 MPa respectively for samples synthesized from TiC or graphite as carbon source. The low mechanical properties make the porous sample easy to be broken as powders.

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Key Engineering Materials (Volumes 602-603)

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130-133

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https://doi.org/10.4028/www.scientific.net/KEM.602-603.130

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Online since:

March 2014

Authors:

Zheng Yang Li, Li Bo Wang, Guo Cai Zhong, Sai Sai Li, Ai Guo Zhou*

Keywords:

Porous, Ternary Carbides, Titanium Tin Carbide

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