Effect of Nanodispersed Ingredients on the Properties of Plasma Coatings
I. V. Smyrnov, A. V. Chornyi, V. I. Kopylov
National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine
Received: 02.09.2019. Download: PDF
The physical-mechanical characteristics of multiphase plasma coatings based on compositions from mixtures that include ceramic-metal macropowders NiAl, NiCrВSi, Al2O3 and microcomponents based on aerosil SiO2 and aluminaerosil Al2O3⋅SiO2 are considered in the paper. The physical-mechanical characteristics of self-fluxing coatings based on the PG-SR2 system, modified by nanodispersed TiO2 and Al2O3 powders by a mechano-chemical method, are studied under abrasive wear. The presented coatings of a multiphase structure, due to the presence of ultrafine ingredients, are characterized by increased parameters of crack resistance, strength, elasticity, wear resistance. As found, the addition of TiO2 nanooxide to alumina powder leads to an increase in the adhesion strength of ceramic coatings by 15–20%. The addition of Al2O3 nanooxide to the PG-SR2 powder leads to an increase in the microhardness of plasma coatings by 25–40%, while the wear resistance increases by 2.5–3 times.
Key words: plasma coating, multiphase composition, nanodispersed components, elastic modulus, strength, fracture, wear resistance.
URL: http://mfint.imp.kiev.ua/en/abstract/v42/i06/0797.html
DOI: https://doi.org/10.15407/mfint.42.06.0797
PACS: 61.05.cp, 62.20.Qp, 68.35.Gy, 68.37.Hk, 81.07.Wx, 81.15.Cd
Citation: I. V. Smyrnov, A. V. Chornyi, and V. I. Kopylov, Effect of Nanodispersed Ingredients on the Properties of Plasma Coatings, Metallofiz. Noveishie Tekhnol., 42, No. 6: 797—814 (2020) (in Russian)