Adhesion Strength of TiZrN/TiSiN Nanocomposite Coatings on a Steel Substrate with Transition Layer

Автор(ы) V.M. Beresnev1 , S.V. Lytovchenko1 , B.O. Mazilin1, D.V. Horokh1, V.А. Stolbovoy1,2, D.А. Kolesnikov3, I.V. Kolodiy2, S. Zhanyssov4

1V.N. Karazin Kharkiv National University, 4, Svoboby Sq., 61000 Kharkiv, Ukraine

2National Scientific Centre “Kharkiv Institute of Physics and Technology”, 1, Akademichna St., 61108 Kharkiv, Ukraine

3Belgorod National Research University, 85, Pobedy St., 308015 Belgorod, Russia

4D. Serikbayev East Kazakhstan State Technical University, 69, Protozanov St., 070004 Ust-Kamenogorsk, Republic of Kazakhstan

Выпуск Том 12, Год 2020, Номер 4
Даты Received 11 May 2020; revised manuscript received 15 August 2020; published online 25 August 2020
Ссылка V.M. Beresnev, S.V. Lytovchenko, B.O. Mazilin, et al., J. Nano- Electron. Phys. 12 No 4, 04030 (2020)
PACS Number(s) 61.46 – w, 62.20.Qp, 62.23.Pq, 62.25. – g
Ключевые слова Vacuum-arc coatings, Adhesive strength, Multilayer coatings, Preliminary preparation, Plasma heating, Intermediate layer.

Influence of surface pretreatment on adhesion properties of TiZrN/TiSiN vacuum-arc coatings on steel substrates 12Х18Н9Т has been studied. Multilayer coatings were obtained by spraying two cathodes of compositions (mass %) 75 Ti + 25 Zr and 94 Ti + 6 Si in the same technological cycle with pretreatment, which could include cleaning of samples with gas plasma in the two-stage gas discharge or ion bombardment at arc spraying of cathodes, deposition on the substrate at arc spraying of cathodes, as well as combinations of these variants of cleaning with substrates. X-ray analysis, electron microscopy, sclerometry and micro-hardness measurements were used to study the composition, structure and properties of the obtained “coating-substrate” composites. The features of deformation and degradation of coatings formed after different variants of preliminary preparation of samples were revealed. Values of critical loads at dynamic indentation of coatings, changes in friction coefficient and level of acoustic emission signal testify to high adhesive strength of (TiZr)N/(TiSi)N coatings, which allows recommending them to increase cutting tool performance. The presence of an intermediate layer does not increase the resistance of these coatings to breakage, but it slows down the process of degradation of coatings and smooths sharp jump changes in properties.

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