Abstract
Carbon is the most versatile element in the periodic table. However, carbon materials have a serious shortcoming. They are easily oxidized above 530°C in air. It is possible to protect graphite plates or carbon fibers with SiC coating by CVD or pyrolysis of polymer containing Si and C. SiC is known as an effective material to prevent oxidation and corrosion due to the strong covalent bond and the passive oxidation by forming a protective SiO 2 layer on SiC. It is difficult to coat fine carbon materials such as carbon nanotubes and fine diamond powders with SiC uniformly. The SiC coating on carbon nanotubes would improve not only the oxidation resistance, but poor adhesion with the matrix when they are used as nano-reinforcements. This chapter discusses a new and easy process for SiC coating on fine carbon materials and some applications of SiC-coated diamond particles and carbon nanotubes to create new composites. Nanometer-sized β-SiC granules are coated on diamond particles and Multi-Walled Carbon Nanotubes (MWCNTs) uniformly by a new simple method using SiO. The SiC-coated diamond particles and MWCNTs can act as effective reinforcements to produce new high-performance composites.
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