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 The formation of diamond and the behaviour of coexisting carbides with diamond in several 3d-transition metals (manganese, iron, cobalt, nickel)-graphite systems was studied under 7 GPa pressure up to 1700° C from the view-point of diamond formation. In the nickel-graphite and cobalt-graphite systems, no stoichiometric carbide was formed, but M x C, which is thought to be the interstitial solid solution of carbon, was formed. In the iron-graphite system, on the other hand, the formation of two stoichiometric carbides, i.e. Fe3C and Fe7C3, was found. In the manganese-graphite system, only one stoichiometric carbide Mn7C3, which is isostructural with Fe7C3, was formed. The diamond formation process in the presence of these transition metals is discussed in relation to the carbide formation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00553016
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