Journal
CARBON
Volume 67, Issue -, Pages 168-177Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2013.09.077
Keywords
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Funding
- National Natural Science Foundation of China [51275370]
- Nature Science Foundation of Hubei Province [2012FFB05104]
- Fundamental Research Funds for the Central Universities [2013-ZY-049]
- Project for Science and Technology Plan of Wuhan City [2013010501010139]
- Academic Leader Program of Wuhan City [201150530146]
- Project for Teaching and Research project of Wuhan University of Technology [2012016]
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This paper reports on preparation technique and tribological properties of multilayer graphene (MLG) reinforced TiAl matrix composites (GTMC). GTMC are successfully prepared by spark plasma sintering (SPS). Structural characterization of starting MLG and the sintered GTMC are performed using Raman spectroscopy and field emission scanning electron microscopy, which indicates that MLG homogeneously distributes in GTMC. Tribological studies suggest that MLG plays an important role in decreasing friction coefficients by a factor of 4 and wear by almost 4-9 times of magnitude. Such marked reductions are attributed to the fact that MLG easily shears and forms a conformal anti-wear protective layer on the sliding contact interfaces, thus drastically reduces the friction coefficients and wear rates of GTMC. MLG can actually act as an effective reinforcement and lubricant phase in GTMC. (C) 2013 Elsevier Ltd. All rights reserved.
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