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Title: On Nanomodification of Coating Obtained by Laser Cladding of Composite Powder 12NVK-01
Authors: Cherepanov, A. N.
Ovcharenko, Vladimir Efimovich
Orishich, A. M.
Malikov, A. G.
Drozdov, V. O.
Pshenichnikov, A. P.
Keywords: покрытия; лазерная наплавка; композиционные порошки; наномодифицирование; наплавочные материалы; наномодификаторы; плавление; износостойкость; нанопорошки
Issue Date: 2019
Publisher: IOP Publishing
Citation: On Nanomodification of Coating Obtained by Laser Cladding of Composite Powder 12NVK-01 / A. N. Cherepanov [et al.] // IOP Conference Series: Earth and Environmental Science. — Bristol : IOP Publishing, 2019. — Vol. 224 : Ecology and safety in the technosphere: current problems and solutions (EST 2018) : All-Russian research-to-practice conference, 22–24 November 2018, Yurga, Russian Federation. — [012016, 8 p.].
Abstract: The results of an experimental study of the effect of nanomodifying additives on the structure and mechanical properties of a multilayer coating during laser surfacing of a composite powder with a strengthening phase are presented. As a surfacing material, nickel powder 12NVK -01 with a strengthening phase of tungsten carbide was used, and as a modifying additive was a mixture of nanosized refractory powders of titanium nitride and yttrium oxide clad with iron and chromium. It is established that the deposited coating represents a complex system of phases formed during the melting and interaction of the chemical elements of the substrate and the melted powder mixture. The main component of the coating is the combination of nickel with iron and chromium of the type Ni3(Fe,Cr). In the melting process, a partial decomposition of the strengthening phase occurs, depending on the concentration of the nanomodifier. In the case considered, the optimum amount of the modifying additive providing the maximum hardness and wear resistance increase of the composite coatings of the Ni-Cr-B-Si-Fe / WC system is 0.1% by mass of the refractory TiN+Y[2]O[3] nanopowder additive in the composite material.
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