Formation and Morphology of 2H‐SiC Whiskers by the Decomposition of Silicon Nitride

α-SiC whiskers were synthesized by decomposition of Si 3 N 4 at 1900°C in a graphite vessel under a pressure of 10 atm of N 2 . The fibrous crystal produced was identified as 2H-SiC by X-ray diffraction. The whiskers take the shape of straight needles colored white, gray or green