Formation of Phase Composition, Structure and Properties of Mechanically Alloyed "Fe-Al"-Based Composite Powders and Coatings Made of Them

Lovshenko, F. G.; Ловшенко, Г. Ф.; Федосенко, А. С.

doi:10.53078/20778481_2012_1_36

Cited by 3 publications

(1 citation statement)

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“…Известно [12], что структура композитных покрытий представляет собой матрицу -основной компонент, которая содержит в своем объеме упрочняющую фазу -наполнитель (армирующий элемент). Чаще всего композиты классифицируют по их структуре, в частности, различают дисперсно-упрочненные, слоистые и волокнистые функциональные покрытия.…”

Section: материалы и методыunclassified

Hardening of the plasma spraying coating dispersed additional phase of titanium carbide

Trifonov,

Penkov,

Derkanosova

et al. 2022

Vestn. Voronež. gos. univ. inž. tehnol.

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Today in Russia, one of the most important stages in the development of additive gas-thermal technologies is the optimal choice of materials. In particular, in the field of gas-thermal methods for applying composite coatings on the surface of machine parts, plasma spraying technology is advanced and promising from the point of view of economic benefits and import substitution. In this paper, the issue of obtaining a composite coating with an additional dispersed phase (titanium carbide) is considered. The results of theoretical and practical studies on the peculiarities of hardening of the composite coating under study are presented. Calculations of shear stress according to the theories of Fischer-Hart-Pry and Orovan are presented. According to the current GOST, the shear strength of the coating under study is determined. As a result of the work, the structure of the composite coating from the sprayed material 76.5% PR-NX17CP4+23.5% TiC was investigated, namely: the structure of the sprayed composite coating in optical and scanning electron microscopy is presented. The transverse section of the composite coating is also analyzed, and conclusions are drawn on the nature of its formation. Defects of the applied layer of composite coating in the form of cracks, local delaminations, large pores were not detected. The microplate is characterized by high density, uniformity of structure, low porosity, absence of cracks and high adhesion strength of the coating to the substrate. Recommendations have been made on the possible use of plasma spraying material (76.5% PR-NH17CR4+23.5% TiC), in particular when restoring worn surfaces of aircraft landing gear racks and steering gear drives of military and civil aviation. These recommendations are justified due to the high shear strength values of the composite coating under study.

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Section: материалы и методыunclassified

Hardening of the plasma spraying coating dispersed additional phase of titanium carbide

Trifonov,

Penkov,

Derkanosova

et al. 2022

Vestn. Voronež. gos. univ. inž. tehnol.

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Regularities of Structure Formation of Aluminum Powdered Particles Produced by Reactive Mechanical Alloying

Gadalov

Гвоздев

Колмаков

et al. 2020

Inorg. Mater. Appl. Res.

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The phase composition, structure and properties of high-temperature-based powders of the system iron-aluminum obtained by the technology of the reaction-mechanical alloying. Foundry production and metallurgy

Lovshenko

Федосенко

2019

Litʹë metall.

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The regularities of the formation of powders based on the Fe-Al system, obtained by the method of mechanical alloying and intended for the deposition of thermal spraying coatings were established. The morphology, structure, phase composition and properties of materials are investigated. After mechanical synthesis, the powders have an average particle size of 30–100 µm, submicrocrystalline structures, and nonequilibrium phase composition. Annealing of powders causes to an increase in the hardness of particles up to 80%, the value of which is largely preserved after prolonged heating to 1170 K, which indicates the presence of heat-resistant materials.

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Formation of Phase Composition, Structure and Properties of Mechanically Alloyed "Fe-Al"-Based Composite Powders and Coatings Made of Them

Cited by 3 publications

References 0 publications

Hardening of the plasma spraying coating dispersed additional phase of titanium carbide

Hardening of the plasma spraying coating dispersed additional phase of titanium carbide

Regularities of Structure Formation of Aluminum Powdered Particles Produced by Reactive Mechanical Alloying

The phase composition, structure and properties of high-temperature-based powders of the system iron-aluminum obtained by the technology of the reaction-mechanical alloying. Foundry production and metallurgy

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