Актуальные проблемы в машиностроении. 2016. №3

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Актуальные проблемы в машиностроении. 2016. №3 Материаловедение
в машиностроении
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SUPER HARD COATING ON THE HARD ALLOY VK8
Oskolkova T.N.1, Ph.D.(Engineering), Associate Professor, e-mail:
Tyurin A.G.2, Ph.D.(Engineering), Associate Professor, e-mail:
Strahov A.P.2, Master’s Degree student,
1 Siberian State Industrial University, 42 Kirov st., Novokuznetsk, 654007, Russian Federation
2 Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian
Federation
Abstract
In this research a super hard with nanohardness 34450 MPa ionic plazma coating on the surface
of a hard alloy VK8 is got. This coating consists of (Ti, Zr)N and has the thickness of 15 µm. The
coating has very good adhesive strength. During the experiment it was established that the even
distribution of TiN and ZrN in the coating despite the micro layering of the covering itself leads to
the increase of the anti-friction ability and, in general, increases service features of the hard alloy.
There is an opportunity to allow the required compromise between the properties of the surface
layer and the material of the cutting tools which will let the tool-cutting speed to be increased when
mechanical treatment takes place.
Key words
Hard alloy, nanohardness, antifriction ability, roughness, adhesion, structure, ionic-plasma
coating
Funding
The work within the project of the state order of the Ministry of Education and Science of Russia
№ 11.153.2014 / K