Abstract
The structural order of diamond polycrystalline composite materials obtained by the infiltration of the diamond compact by nickel-silicon alloys at pressures up to 5.0 GPa and temperatures reaching 1800 K is investigated. It is established that they consist of a diamond skeleton and intercrystallite metal-ceramic binder. The diamond skeleton is formed from diamond grains of the starting size with weak diamond-diamond bonds, while the intergrain space is filled by diamond fragments and an intermetallic binder. The formation of carbide layers from silicon carbide on the surface of diamond grains determines the strength properties of diamond composites in general.
Similar content being viewed by others
References
Nojkina, A.V., Laptev, A.I., and Ermolaev, A.A., High Press. Res., 2002, vol. 22, p. 545.
Semerchan, A.A., Malikova, Zh.G., Modenov, V.P., and Nuzhdina, S.G., Dokl. Akad. Nauk SSSR, 1975, vol. 220, no. 1, p. 78.
Laptev, A.A., Stepareva, N.N., Polushin, N.I., and Belomyttsev, M.Yu., Izv. Vyssh. Uchebn. Zaved. Chern. Metal., 2011, no. 1, p. 31.
Laptev, A.A., Polushin, N.I., and Sorokin, M.N., Materialovedenie, 2011, no. 2, p. 48.
Tonkov, E.Yu., Fazovye prevrashcheniya soedinenii pri vysokom davlenii (Phase Transformations of Compounds at a High Pressure), Moscow: Metallurgiya, 1988.
Novikov, N.V., Fedoseev, D.V., Shul’zhenko, A.A., and Bogatyreva, G.P., Sintez almazov, Novikov, N.V., Ed., Kiev: Naukova Dumka, 1987.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.V. Elyutin, M.Yu. Belomytsev, A.A. Laptev, N.I. Polyshin, M.N. Sorokin, A.I. Laptev, 2012, published in Izvestiya VUZ. Poroshkovaya Metallurgiya i Funktsional’nye Pokrytiya, 2012, No. 4, pp. 47–51.
About this article
Cite this article
Elyutin, A.V., Belomytsev, M.Y., Laptev, A.A. et al. Structural investigations of diamond composites prepared by the infiltration of the diamond compact near the line of thermodynamic equilibrium of graphite with diamond. Russ. J. Non-ferrous Metals 55, 294–297 (2014). https://doi.org/10.3103/S1067821214030031
Published:
Issue Date:
DOI: https://doi.org/10.3103/S1067821214030031