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Название Diamond instrument binding with hybrid nano-modification for processing of highly abrasive materials
DOI 10.17580/tsm.2018.03.13
Автор Loginov P. A., Sidorenko D. A., Bychkova M. Ya., Levashov E. A.
Информация об авторе

National University of Science and Technology MISiS, Moscow, Russia:

P. A. Loginov, Researcher of Scientific and Research Center of Self-Spreading High-Temperature Synthesis MISiS-ISMAN, e-mail: pavel.loginov.misis@list.ru
D. A. Sidorenko, Researcher of Scientific and Research Center of Self-Spreading High-Temperature Synthesis MISiS-ISMAN
M. Ya. Bychkova, Researcher of Scientific and Research Center of Self-Spreading High-Temperature Synthesis MISiS-ISMAN
E. A. Levashov, Director of Scientific and Research Center of Self-Spreading High-Temperature Synthesis MISiS-ISMAN, e-mail: levashov@shs.misis.ru


New compositions of bindings were developed for diamond-cutting instruments in the Fe — Ni — Mo system. They are modified with nanoparticles of wolfram carbide, hexagonal boron nitrite and carbon nanotubes. The influence of addition of modifiers on the structure as well as mechanical and wear properties of the binding was demonstrated. It was established that the given nanoparticles are not mutually replaceable, the effect of their introduction sums up. The nano-modified Fe – Ni – Mo bindings are 15% stronger than the initial ones, with the samples, containing all three types of nanoparticles, having the maximal characteristics. The increased level of mechanical properties through addition of nanoparticles into the binding occurs due to blocking of recrystallization during hot pressing and, consequently, the formation of highly dispersive structure (by Hall – Petch strengthening). It was determined that the average size of matrix grains in the nano-modified samples equals 0.4 μm, which is 50% lower than in the case of samples with the initial binding. The tribological tests, conducted on the developed compositions, showed that the wear tolerance of nano-modified bindings supersedes the initial ones by 2–3.5 times. The high wear resistance enables a successful application of Fe – Ni – Mo bindings with hybrid nanoparticles in diamond instruments, used for processing of abrasive materials (concrete, stone).
This work was carried out with the financial support of the Russian Foundation for Basic Research and Moscow Government within the scientific project No. 15-38-70019 «мол_а_мос».

Ключевые слова Compositional material, cutting instrument, diamond instrument, carbon nanotubes, nanoparticles, scanning electronic microscopy, transmission electron microscopy, strength
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