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 Diamond was synthesized using the catalyst-solvents of Ni-Cu and Ni-Zn alloys with relatively low melting temperature in order to decrease the conversion temperature. The lowest temperature limit for diamond synthesis was not changed with the addition of copper to nickel but decreased by 100° C with the addition of zinc. The temperature limits were found to coincide with the eutectic temperatures of the alloy-carbon systems, which indicates that diamond forms when the metal melts. The yield of diamond decreased with the addition of copper or zinc, but increased with increasing temperature or pressure. The result suggests that a catalytic effect of the metal should be considered. Crystals grown from the alloys did not show a different morphology from those grown in nickel, although the crystal size tended to be small, 0.2 to 0.4 mm across.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01045354
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