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Chemical vapour growth of HfC whiskers and their morphology (1996)

Motojima, S. ; Kawashima, Y.

Springer

Journal of materials science 31 (1996), S. 3697-3700

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ISSN: 1573-4803

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00352782

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