Synthesis and Characterization of Ti3(Al1-n Gen)C2 by a Reactive Hot Pressing of TiCx, Al, and Ge Powder Mixture

Jae Ho Han; Kyung Don Nam; Sang Whan Park; Young Do Kim

doi:10.4028/www.scientific.net/SSP.124-126.751

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HomeSolid State PhenomenaSolid State Phenomena Vols. 124-126Synthesis and Characterization of Ti3(Al1-n Gen)C2...

Synthesis and Characterization of Ti₃(Al_1-n Ge_n)C₂ by a Reactive Hot Pressing of TiCx, Al, and Ge Powder Mixture

Abstract:

Bulk Ti3(Al1-nGen)C2 (n=0, 0.3, 0.5, 0.7, 1.0)were synthesized by a reactive hot pressing of TiCX (x=0.6), Al and Ge powder mixture at 1400 °C for 1 h under 25 MPa. A series of Ti3(Al1-nGen)C2 was successfully synthesised by a hot pressing through a direct liquid-solid reaction between Al-Ge melt and TiCx, and simultaneous densification. Synthesized bulk Ti3(Al1-nGen)C2 was maintained a typical layered structure as shown in other ternary carbide such as Ti3AlC2 and Ti3GeC2. With increasing Al or Ge contents in Ti3(Al1-nGen)C2, both of Vickers hardness and flexural strength of Ti3(Al1-nGen)C2 were increased compared to those of pure Ti3AlC2 and Ti3GeC2 . The maximum flexural strength of Ti3(Al1-nGen)C2 (n=0.3) was about 600 MPa, which was about 3 times higher than that of pure Ti3GeC2. The Vickers hardnesses of Ti3(Al1-nGen)C2 and Ti3AlC2 were slightly decreased with increasing an indentation load.

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Solid State Phenomena (Volumes 124-126)

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751-754

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https://doi.org/10.4028/www.scientific.net/SSP.124-126.751

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Online since:

June 2007

Authors:

Jae Ho Han, Kyung Don Nam, Sang Whan Park, Young Do Kim

Keywords:

Mechanical Property, Solid Solution, Synthesis, Ti₃(Al_1-n Ge_n)C₂, Ti₃AlC₂

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