J Mater Sci Technol ›› 2010, Vol. 26 ›› Issue (5): 385-416.

• Invited Review •     Next Articles

Layered Machinable and Electrically Conductive Ti2AlC and Ti3AlC2 Ceramics: a Review

X.H. Wang, Y.C. Zhou   

  1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2010-03-05 Revised:2010-04-16 Online:2010-05-31 Published:2010-06-01
  • Supported by:

    the National Natural Science Foundation of China (NSFC) under Grant Nos. 50802097, 50832008 and the IMR Innovative Research Foundation

Abstract:

Ti2AlC and Ti3AlC2 are the most light-weight and oxidation resistant layered ternary carbides belonging to the MAX phases. This review highlights recent achievements on the processing, microstructure, physical, mechanical and chemical properties of these two machinable and electrically conductive carbides. Ti2AlC and Ti3AlC2 display superior properties such as fracture toughness, electrical and thermal conductivities, and oxidation resistance over their binary counterpart. This paper provides a comprehensive overview of the processing-microstructure-property correlations of these two carbides. Potential fields of applications for Ti2AlC and Ti3AlC2 are surveyed. In addition, we point out methods for further improving their properties in some specific applications through appropriate structural design and modification.

Key words: MAX phases, Ti2AlC, Ti3AlC2, Machinable ceramics