Abstract: Carbolic ink mixed with a few tiny silicon powders was adopted to fully immerse polyacrylonitrile (PAN) based carbon felt then dried it, and as the result of such reactions as carbon thermal reduction etc, with gaseous outcomes generated from tiny silicon powders at 1450℃ in vacuum, abundant SiC nano-threads were fabricated within the inner space of the carbon felt. There exist many SiC nano-threads with tortuous pattern, their diameters are within the range of 25nm to 150nm, and detectable lengths of them can be more than 15μm. There also exist various SiC structures such as membranes, nano-blowballs, nano-particles, and so on. Characterizations for the sintered sample of XRD, SEM, and TEM analyses were carried out, and components, microstructures of the sample as well as growth mechanisms of the nano-threads were preliminarily studied.

Key words: carbolic ink, SiC nano-threads, fabrication