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Title:: A Review of Carbon Nanomaterials Reinforced Titanium Metal Matrix Composites

Author(s):: YAN Qi; CHEN Biao; LI Jinshan; (State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi‘a(chǎn)n 710072, China)

Keywords:: powder metallurgy; titanium matrix composites; nano-carbon/Ti composites; Gr/Ti composites; CNTs/Ti composites

Abstract:: Carbon nanomaterials with excellent mechanical and conductive performances, whose strength, modulus and thermal conductivity are much greater than metal materials, are one type of the best reinforcements for metal matrix composites. Compounding carbon nanomaterials with titanium and its alloys, by adjusting the content and distribution of carbon nanoreinforcements, is expected to noticeably improve the mechanical strength, electrical and thermal conductivity of the titanium matrix. Thus, nanocarbon/Ti composites may become structural and functional integrated material. However, the chemical compatibility between carbon and titanium is poor, so that they are prone to chemically react with each other during preparation process. It may cause the structural destruction of the carbon nano-reinforcement. Therefore, how to control the interface reaction between carbon nanoreinforcement and titanium matrix becomes a key to improving the performance of the composites. Based on this, the research progress of carbon/Ti composites by powder metallurgy methods was reviewed. The forming processes of carbon nanomaterials reinforced titanium composites (nano-carbon/Ti composites) were introduced, while its interface structure and properties were discussed. Finally, the critical problems and possible solutions of nano-carbon/Ti composites were summarized for guiding its future development.