Abstract
A new diamond-hard alloy macrocomposite material consisting of diamond grits (0.5–0.8 mm or more in size) and a WC-Co matrix has been developed. The material is characterized by high mechanical properties of the matrix (the same as for WC-Co monolithic hard alloys) while diamonds remain completely intact (no graphitization or dissolution in cobalt melt). This process does not require superhigh pressures. Hard-alloy samples sintered beforehand in conditions that ensure the maximum mechanical properties (1450–1500°C, 30–60 min holding) are used as initial materials. Hollows (cells) or ditches of specific sizes (depth, width) are made in these samples with mechanical or electrophysical methods, and then diamond crystals (grits) commensurate with the hollows, cells, or ditches are placed in them. Vacuum infiltration (brazing) at moderate temperatures (900–1150°C) with adhesion-active alloys (or metallized diamonds) is the final stage in the formation of the composite. Therefore, strong adhesion-mechanical fixation of diamond grits in the hard-alloy matrix is ensured. The new material is efficiently used in diamond bits.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
V. N. Bakul’, I. I. Bilyk, D. Kh. Bronshtein, et al., “Method of manufacturing products containing superhard materials,” USSR Inventor’s Certificate No. 356910, Otkryt. Izobr. No. 41 (1968).
V. N. Bakul’, I. F. Vovchanovskii, and N. V. Tsypin, “Method of manufacturing products on a hard-alloy base,” USSR Inventor’s Certificate No. 514482, Otkryt. Izobr., No. 7 (1968).
N. V. Novikov (ed.), Composite Superhard Tool Materials, Vol. 2 of the three-volume series Synthetic Superhard Materials [in Russian], Naukova Dumka, Kiev (1986), p. 264.
V. N. Bakul’ and A. A. Bugaev, “Use of slavutich in diamond bits for geological exploaration,” Sinteticheskie Almazy, No. 4, 42–44 (1972).
I. T. Lakotov, F. M. Shvets-Shust, A. N. Granchenko, and A. A. Bugaev, “Synthetic diamonds and slavutich in geological exploratory drilling,” Sinteticheskie Almazy, No. 1, 49–52 (1976).
K. L. Padyukov, E. A. Levashov, I. P. Borovinskaya, et al., “Superhigh frequency as a new method of producing diamond-containing hard-alloy materials,” Metallurg, No. 6, 26–27 (1992).
K. L. Padyukov, E. A. Levashov, I. P. Borovinskaya, and A. G. Kost, “Behavior of synthetic diamond in a combustion wave of self-propagating high-temperature synthesis,” Inzh. Fiz. Zh., 63, No. 5, 577–583 (1992).
Yu. V. Naidich, V. P. Umanskii, and I. A. Lavrinenko, Strength of Diamond-Metal Contact and Soldering of Diamonds [in Russian], Naukova Dumka, Kiev (1988), p. 136.
V. P. Umanskii, T. B. Konovalenko, V. A. Evdokimov, and A. A. Bugaev, “Effect of chromium and binder on diamond fixation in drilling matrix,” Adgeziya Rasplavov i Paika Materialov, Issue 37, 95–102 (2004).
Author information
Authors and Affiliations
Additional information
__________
Translated from Poroshkovaya Metallurgiya, Vol. 47, No. 3–4 (460), pp. 46–54, 2008.
Rights and permissions
About this article
Cite this article
Naidich, Y.V., Bugaev, A.A., Adamovskii, A.A. et al. Diamond-hard alloy macrocomposite material: Development and application. Powder Metall Met Ceram 47, 191–196 (2008). https://doi.org/10.1007/s11106-008-9004-8
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11106-008-9004-8