Abstract
HfC whiskers were prepared from a gas mixture of HfCl4 + CH4 + H2 + Ar in the presence of metal impurities, and the growth conditions and morphology were examined. The HfC whiskers preferentially grew at an H/Cl ratio of above 8, an HfCl4 gas flow rate of 10–20 standard cm3 min−1, a CH4 flow rate of 10–20 standard cm3 min−1, and at temperatures above 1050 °C. HfC whiskers, 60–170 μm long, with a ball-like tip and periodically varying diameters, were obtained at 1250 °C using a cobalt impurity.
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Motojima, S., Kawashima, Y. Chemical vapour growth of HfC whiskers and their morphology. JOURNAL OF MATERIALS SCIENCE 31, 3697–3700 (1996). https://doi.org/10.1007/BF00352782
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DOI: https://doi.org/10.1007/BF00352782