

Features of the interfacial zone structure formation during thermal diffusion metallization of diamond by transition metals
https://doi.org/10.22349/1994-6716-2019-99-3-75-90
Abstract
When thermal diffusion metallization of diamond with iron occurs at the diamond-metal interfacial zone, the formation of an intermediate layer strongly adhered to the diamond also takes place. The intermediate layer has a complex structural phase composition comprising a mixture of iron phases, a solid solution of carbon in iron and graphite of variable composition. An intermediate layer on the surface of diamond could be formed by solidification of the liquid phase with the eutectic composition resulting from the eutectic melting of the diamond-iron contact pairs. However, this assumption requires additional research to confirm it, and special experiments using highly sensitive research methods.
Under the heating conditions specified in the experiment samples of nickel-diamond and cobaltdiamond cause intense catalytic graphitization of diamond with the formation of numerous traces of erosion on its surface. The observed weak adhesive interaction of these metals with diamond is probably due to the high melting temperatures of the Ni-C and Co-C eutectics, which does not allow the metals to react with diamond under given experimental conditions.
Keywords
About the Authors
P. P. SharinRussian Federation
Cand Sc. (Phys-Math)
1 Oktyabrskaya St, 677980 Yakutsk ,Republic of Sakha (Yakutia), Russian Federation
M. P. Akimova
Russian Federation
1 Oktyabrskaya St, 677980 Yakutsk ,Republic of Sakha (Yakutia), Russian Federation
S. P. Yakovleva
Russian Federation
Dr Sc (Eng)
1 Oktyabrskaya St, 677980 Yakutsk ,Republic of Sakha (Yakutia), Russian Federation
L. A. Nikiforov
Russian Federation
Cand Sc. (Eng)
58 Belinskogo St, 677000 Yakutsk, Republic of Sakha (Yakutia), Russian Federation
V. I. Popov
Russian Federation
Cand Sc. (Phys-Math)
58 Belinskogo St, 677000 Yakutsk, Republic of Sakha (Yakutia), Russian Federation
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Review
For citations:
Sharin P.P., Akimova M.P., Yakovleva S.P., Nikiforov L.A., Popov V.I. Features of the interfacial zone structure formation during thermal diffusion metallization of diamond by transition metals. Voprosy Materialovedeniya. 2019;(3(99)):75-90. (In Russ.) https://doi.org/10.22349/1994-6716-2019-99-3-75-90