Adyghe Int. Sci. J. Vol. 26, No. 1. Pp. 42–55.
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DOI: https://doi.org/10.47928/1726-9946-2026-26-1-42-55
EDN: QMBQYW
CHEMISTRY
| UDC 544.653.22 | Original Article |
Chemical and electrochemical dissolution
of the hard-alloy matrix of scrapped diamond tools
in molten sodium hydroxide
Khasbi Bilyalovich Kushkhov
Doctor of Chemical Sciences, Professor, Head of the Department of Inorganic and Physical Chemistry Kabardino-Balkarian State University named after H. M. Berbekova, (Nalchik, Russia), Full member of IAAS, Honored Scientist of the Russian Federation, ORCID: https://orcid.org/0000-0002-8613-9868, SPIN code: 8268-6590, hasbikushchov@yahoo.com
Ligidova Marina Nurgalievna
Candidate of Chemical Sciences, Associate Professor of the Department of Inorganic and Physical Chemistry, Kabardino-Balkarian State University named after Kh. M. Berbekova (Nalchik, Russia), ORCID: https://orcid.org/0009-0009-6016-7236, SPIN code: 7249-7762, adamokova1@mail.ru
Potapov Aleksey Mikhailovich
Doctor of Technical Sciences, Leading Researcher, Corrosion Laboratory, Federal State Budgetary Scientific Institution Institute of High-Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences (Ekaterinburg, Russia), SPIN code: 1748-4897, A.Potapov_50@mail.ru
Shogenova Madina Aslanovna
Assistant, Department of Inorganic and Physical Chemistry, Kabardino-Balkarian State University named after Kh. M. Berbekova (Nalchik, Russia), SPIN code: 7958-8106, madina.tlimakhova@mail.ru
Nurnepesova Gultach Annanepesovna
master’s student at the Institute of Mathematics and Natural Sciences of the Kabardino-Balkarian State University named after Kh. M. Berbekov (Nalchik, Russia), g.nurnepesova@icloud.com
Abstract. The paper is devoted to issues of processing matrix components of scrapped diamond tools (tungsten, cobalt, and nickel, copper). Using the method of thermodynamic analysis, a theoretical justification of the most probable reactions between the components of the diamond tool matrix and molten sodium hydroxide in inert and air atmospheres was carried out. The possibility of extracting components of the scrapped diamond tool matrix was demonstrated using chemical and electrochemical dissolution methods. A comparison was made of the rates of chemical and electrochemical dissolution of the components of the spent diamond tool matrix and the corrosion rate of ST-3 steel in molten sodium hydroxide.
Keywords: scrapped diamond tool, thermodynamic assessment of interactions, electrochemical dissolution, molten sodium hydroxide, tungsten carbide, sodium tungstate.
Funding. The work was not carried out within the framework of funds.
Competing interests. There are no conflicts of interest regarding authorship and publication.
Contribution and Responsibility. All authors contributed to this article. Authors are solely responsible for providing the final version of the article in print.
For citation. Kushkhov H. B., Ligidova M. N., Potapov A. M., Shogenova M. A., Nurnepesova G. A. Chemical and electrochemical dissolution of the hard-alloy matrix of scrapped diamond tools in molten sodium hydroxide. Adyghe Int. Sci. J. 2026. Vol. 26, No. 1. Pp. 42–55.
DOI: https://doi.org/10.47928/1726-9946-2026-26-1-42-55; EDN: QMBQYW
Submitted 13.02.2026; approved after reviewing 27.02.2026; accepted for publication 03.03.2026.
© Kushkhov H. B.,
Ligidova M. N.,
Potapov A. M.,
Shogenova M. A.,
Nurnepesova G. A., 2026
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