ABSTRACT
This chapter introduces the background and motivation to composite materials, emphasizing the use of carbon fibers in conventional composites. Carbon nanotubes exhibit excellent mechanical and functional properties that make them well suited for replacing carbon fibers in applications where higher strength, thermal conductivity, electrical conductivity, and/or control of coefficient of thermal expansion is desired. The chapter introduces methods of CNT synthesis and the motivation behind using them specifically in metal matrix composites (MMCs). Studies measuring some of the most outstanding and unique properties of CNTs are summarized. Research interest in CNT composites continues to grow as evidenced by the number of publications. Research on CNT-MMCs has increased and expanded to more types of metal matrices, including more difficult to process refractory alloys such as tungsten.
