In Situ Synthesis and Properties of Ti3AlC2/TiB2 Composites

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Abstract:

In order to improve the mechanical properties of Ti3AlC2, near-fully dense Ti3AlC2/TiB2 composites were synthesized using Ti, Al, graphite, and B4C powders as the initial materials. Compared with monolithic Ti3AlC2, the composites exhibit a much higher strength (for the compressive strength, from initial 723 MPa to maximal 2205 MPa; for flexural strength, from initial 340 MPa to maximal 861 MPa), and the strengthening effect can be held at least up to 1100°C. Moreover, besides the enhancement of the elastic modulus and hardness of Ti3AlC2, the introduction of a TiB2 phase makes a positive contribution to its electrical conductivity.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2007.01954.x

Affiliations: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China

Publication date: November 1, 2007

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