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ISSN 2664-2441 (Online)
ISSN 2073-9583 (Print)

The T15K6 Alloy with complex coating for increasing durability of tools

Metalozn. obrobka met., 2019, Tom 90, No 2, cc.26-31
https://doi.org/10.15407/mom2019.02.026

C.M. Chernega, Doctor of Technical Science, Professor of Metal Science and Heat Treatment, smchernega@ukr.net
K.M. Grinenko, Candidate of Technical Science (Ph.D.), Associate Professor of Metal Science and Heat Treatment
I.A. Polyakov, Candidate of Technical Science (Ph.D.)

National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv

UDC 621.785.539.5
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Summary

The results of studies on the application of complex boron coating powder method on hard alloys. Defined phase and chemical composition, thickness and microhardness of the coating on alloys. It was established that after diffusion saturation of hard alloy in boron mixture for 4 hours formed coating with boride phases TiB, WB, CoB and WC, TiC, whose thickness is 30 microns. At complex saturation with boron and copper for 4 hours diffusion saturation formed coating with boride phases TiB, WB, CoB and WC, TiC and separate inclusions of copper with a thickness of the diffusion layer up to 20 microns. Boriding and complex saturation with boron and copper allows in 2 – 2.5 times increase the microhardness of the surface layers of hard alloys, that in turn leads to increased wear resistance.

Keywords: hard alloy, borіding, boron carbide, copper, structure, diffusion, friction, microhardness, wear resistance.

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