Experimental study of the speed-dependence tribotechnical characteristics of some plasma-sprayed oxide coatings at elevated temperatures

Sachek, B. Ya.; Mezrin, A. M.; Zaytzev, A. N.

doi:10.3103/s106836661403012x

J. Frict. Wear

2014

DOI: 10.3103/s106836661403012x

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Experimental study of the speed-dependence tribotechnical characteristics of some plasma-sprayed oxide coatings at elevated temperatures

B. Ya. Sachek

A. M. Mezrin

A. N. Zaytzev

Abstract: The effect of the sliding speed on friction and wear characteristics of plasma sprayed ceramic coatings (Al 2 O 3 -13% TiO 2 , ZrO 2 -8% Y 2 O 3 , Al 2 O 3 modified) was studied. Plasma sprayed coatings are not hard and have high layered structure. Abrasion of coatings in the friction pair with steel and bronze counter bodies occurs through brittle detachment conglomerated regions with low cohesive resistance. The modified coating (Al 2 O 3 ) has the highest wear resistance and the lower coefficient of frictio… Show more

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Cited by 4 publications

References 11 publications

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Analytic Calculation and Experimental Study on the Wear of the Slide Guide of Machine Tool Considering Boundary Lubrication

Tan

2020

Journal of Tribology

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A slide guide is the core component of a machine tool feed system, and its wear significantly affects feeding accuracy, machining accuracy, and product quality. This study aims to obtain a suitable wear calculation model for the slide guide under working conditions. The slide guide is a typical plane sliding pair. Based on the principle of friction fatigue, the wear model of plane sliding pairs had been previously established without considering lubrication. Actually, the friction surface of the slide guide is in the state of boundary lubrication when it works normally. In this study, the analysis on the interactions among friction surface asperities covered with a boundary film indicated that the wear model of plane sliding pairs was also applicable to calculate the wear of the slide guide under boundary lubrication by substituting the friction coefficient µ and the fatigue exponent k under lubricating conditions into the wear model. Then, a series of pin-on-disc wear tests with material specimens of the slide guide under boundary lubrication were designed with the working load and working speed of the pair as the experimental parameters. The comparison between the experimental results and calculated results showed that the wear model of plane sliding pairs could be used to predict the wear of the slide guide under boundary lubrication. The wear model reflected the quantitative relationship between the wear rate of the slide guide and its main influencing factors. The study also provides the basis for the tribological design and precision design of the slide guide.

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Analytic Calculation and Experimental Study on the Wear of the Slide Guide of Machine Tool Considering Boundary Lubrication

Tan

2020

Journal of Tribology

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Study of the structure and properties of a high-entropy ceramic composite material

Rusinov

Blednova

2022

Surface Innovations

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The article describes the technology development of layered surface compositions, including a high-entropy layer of a material with high-temperature memory effect of TiNiZrHfCoCu and a high-temperature ceramic layer based on zirconium dioxide ZrO2 stabilized by Y2O3. The authors also studied the structure, functional and mechanical properties of the abovementioned compositions. The proposed technology was implemented on a patented multifunctional technological complex for the formation of composite layered materials on the surface of steel products in a single technological cycle. On the basis of complex X-ray diffraction and electron microscopic studies, the structural parameters of the constituent layers of the surface composition were determined with subsequent thermal and thermomechanical treatment. The tests for ‘friction-wear’ and mechanical multi-cycle fatigue of the constituent layers of the surface composition showed a decrease in wear intensity and an increase in cyclic durability compared to the steel base. The comparison of wear intensity and cyclic durability of the surface-modified layers of the layered composition TiNiZrHfCoCu-ZrO2(Y2O3) with the composite materials obtained and studied by the authors earlier allowed the recommendation of the surface composition ‘high-entropy alloy TiNiZrHfCoCu-high-temperature ceramics’ for products of various purposes.

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Functionally oriented composite layered materials with martensitic transformations

Rusinov

Blednova

Kurapov

2023

Surface Innovations

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The studies carried out show that the task of ensuring the reliability and expanding the functionality of products operating under multifactorial effects (temperature, force, deformation) can be successfully solved by functionally oriented surface composite materials with thermoelastic martensitic transformations (TMT). The authors proposed the technology of layer-by-layer synthesis of functionally-oriented composite layered materials with TMT in argon environment, implemented on patented equipment in a single technological cycle. This technology determines not only the novelty, but also the economic feasibility of technical solutions. We also suggested step-by-step methods of thermal and thermomechanical treatment of composite layered materials with TMT, which contribute to the structure stabilization while decreasing residual stress. On the basis of complex X-ray diffraction and electron microscopic studies, we determined the structural parameters of High Velocity Oxy-Fuel (HVOF) materials obtained by HVOF with subsequent thermal and thermomechanical treatment and ceramic materials ZrO2-Y2O3-CeO2-Al2O3 stabilized with Al2O3 with subsequent heat treatment. We investigated the microhardness of surface high-entropy and ceramic materials. Tests for "friction-wear" and mechanical high-cycle fatigue of steels with a composite surface laminate showed decrease in the wear rate and increase in the cyclic durability.

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Experimental study of the speed-dependence tribotechnical characteristics of some plasma-sprayed oxide coatings at elevated temperatures

Cited by 4 publications

References 11 publications

Analytic Calculation and Experimental Study on the Wear of the Slide Guide of Machine Tool Considering Boundary Lubrication

Analytic Calculation and Experimental Study on the Wear of the Slide Guide of Machine Tool Considering Boundary Lubrication

Study of the structure and properties of a high-entropy ceramic composite material

Functionally oriented composite layered materials with martensitic transformations

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