Nano-structured carbide-derived carbon films and their tribology

M. McNallan 1,
D. Ersoy 1,
R. Zhu 1,
A. Lee 1,
C. White 1,
S. Welz 1,
Y. Goqotsi 2,
A. Erdemir 3,

1 CME Department M/C 246, University of Illinois at Chicago, 842 W. Taylor St., Chicago, IL 60607, USA
2 Department of Materials Science and Engineering and A. J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, Pennsylvania 19104
3 Argonne National Laboratory, Energy Techology Division, Argonne, IL 60439, United States

Tsinghua Science and Technology: TUP, 2005, Т.10, #6 10.1016/S1007-0214(05)70138-3


Carbide-derived carbon (CDC) is a form of carbon produced by reacting metal carbides, such as SiC or TiC, with halogens at temperatures high enough to produce fast kinetics, but too low to permit the rearrangement of the carbon atoms into an equilibrium graphitic structure. The structure of CDC is derivative of the original carbide structure and contains nanoscale porosity and both Sp 2 and Sp 3 bonded carbon in a variety of nanoscale structures. CDC can be produced as a thin film on hard carbides to improve their tribological performance. CDC coatings are distinguished by their low friction coefficients and high wear resistance in many important industrial environments and by their resistance to spallation and delamination. The tribology of CDC coatings on SiC surfaces is described in detail.