Plasma–powder application of antifrictional babbitt coatings modified by carbon nanotubes

Алешин, Н. П.; Коберник, Н. В.; Mikheev, R. S.; Vaganov, V. E.; Reshetnyak, V. V.; Aborkin, A. V.

doi:10.3103/s1068798x16010032

Cited by 12 publications

(12 citation statements)

References 8 publications

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“…The tribological characterization was conducted under different conditions, especially 40, 50, 60 N loads. These conditions were not presented in the literature by other authors investigating tin-based babbitt alloys reinforced with microor nanoparticles [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 87%

“…A study focused in investigating the influence of alumina nanoparticles on microstructural variation of tin-based babbitt as well as bimetallic microstructural interface suggest that the addition of 0.25 and 0.50 wt% alumina nanoparticles improves the mechanical and tribological properties and affects the morphology and distribution of Cu 6 Sn 5 hard phase in the solid solution of the nanocomposite [30]. The results presented in another study of white babbitt coatings modified by carbon nanotubes show increase in the wear resistance of tested materials [31].…”

Section: Introductionmentioning

confidence: 96%

“…The incorporation of nanoparticles as reinforcement in the babbitt alloys has been proven by various studies [30,31] as an improvement in tribological and mechanical properties in the nanocomposites. A study focused in investigating the influence of alumina nanoparticles on microstructural variation of tin-based babbitt as well as bimetallic microstructural interface suggest that the addition of 0.25 and 0.50 wt% alumina nanoparticles improves the mechanical and tribological properties and affects the morphology and distribution of Cu 6 Sn 5 hard phase in the solid solution of the nanocomposite [30].…”

Section: Introductionmentioning

confidence: 99%

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Wear Analysis of an Advanced Al–Al2O3 Composite Infiltrated with a Tin-Based Alloy

Kolev

Drenchev

Petkov

2021

Metals

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In this study, a hybrid material is produced, and the effect of different loads varying from 40 to 60 N against an EN-31 steel counter disk on its wear behavior under dry sliding conditions at room temperature is studied. The tribological behavior is studied via the pin-on-disk method and analyzed using primary wear parameters, such as the coefficient of friction (COF), mass wear, and specific wear rate. The obtained results are compared with the results for B83 babbitt under the same wear test conditions. Microstructural observation with scanning electron microscopy (SEM) is performed along with X-ray energy dispersive spectroscopy (EDX) for chemical analysis conduction. The results from the wear experiments indicate that the hybrid material possesses a lower COF, mass wear, and specific wear rate as well as a higher wear resistance in comparison to the B83 babbitt specimen when subjected to the same test conditions. The results from the wear experiments indicate that by applying different loads of 40, 50, and 60 N, the hybrid material possesses a lower mass wear, specific wear rate, and COF specifically at a load of 40 N in comparison to the B83 babbitt specimen under the same test conditions. It was also observed that by increasing the load under dry sliding friction, the hybrid material increases its mass wear and specific wear rate.

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Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Wear Analysis of an Advanced Al–Al2O3 Composite Infiltrated with a Tin-Based Alloy

Kolev

Drenchev

Petkov

2021

Metals

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“…Among a variety of metallic matrices, aluminum and its alloys are widely used for preparing nanocomposites, and scarce attention has been paid to improve the mechanical properties of bearing materials by adopting the technique of composite preparation. Recently, carbon nanotubes have been added in white metal (Babbitt), which increased its wear resistance to almost an order of magnitude [15].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Sn-Based Babbitt Alloy Nanocomposite Reinforced with Al2O3 Nanoparticles/Carbon Steel Bimetallic Material

et al. 2020

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Sn-based Babbitt alloy was reinforced with alumina nanoparticles to prepare a novel class of nanocomposites. The route of liquid metallurgy in combination with stirring mechanism was chosen to prepare nanocomposites with three different loadings of alumina nanoparticles, i.e., 0.25 wt%, 0.50 wt% and 1.0 wt%. The molten mixture of metallic matrix and nanoparticles was poured over carbon steel substrate for solidification to manufacture a bimetallic material for bearing applications. The underlying aim was to understand the effect of nanoparticle addition on microstructural variation of Sn-based Babbitt alloy as well as bimetallic microstructural interface. The addition of 0.25 wt% and 0.50 wt% alumina nanoparticles significantly affected both the morphology and distribution of Cu6Sn5 hard phase in solid solution, which changed from needle and asterisk shape to spherical morphology. Nanocomposites containing up to 0.50 wt% nanoparticles showed more improvement in tensile strength than the one containing 1.0 wt% nanoparticles, due to nanoparticle-agglomeration and micro-cracks at the interface. The addition of 0.5 wt% nanoparticles significantly improved the wear resistance of Sn-based Babbitt alloy.

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“…Various techniques have been used to fabricate bimetallic bearings, such as casting, welding cast-rolling, cladding and powder metallurgy [1,[5][6][7]. Liquid-solid casting (compound casting) is a unique technique for the fabrication of bimetallic bearings, wherein the working bearing materials are in a liquid state (Al-Sn alloy, Sn-Babbitt alloys, and Cu-Sn alloys) and the supported substrate (mild steel, cast iron, copper alloys) are in a solid state.…”

Section: Introductionmentioning

confidence: 99%

Development and Optimization of Tin/Flux Mixture for Direct Tinning and Interfacial Bonding in Aluminum/Steel Bimetallic Compound Casting

et al. 2020

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Interfacial bonding highly affects the quality of bimetallic bearing materials, which primarily depend upon the surface quality of a solid metal substrate in liquid–solid compound casting. In many cases, an intermediate thin metallic layer is deposited on the solid substrate before depositing the liquid metal, which improves the interfacial bonding of the opposing materials. The present work aims to develop and optimize the tinning process of a solid carbon steel substrate after incorporating flux constituents with the tin powder. Five ratios of tin-to-flux—i.e., 1:1, 1:5, 1:10, 1:15, and 1:20—were used for tinning process of carbon steel solid substrate. Furthermore, the effect of volume ratios of liquid Al-based bearing alloy to solid steel substrate were also varied—i.e., 5:1, 6.5:1 and 8.5:1—to optimize the microstructural and mechanical performance, which were evaluated by interfacial microstructural investigation, bonding area determination, hardness and interfacial strength measurements. It was found that a tin-to-flux ratio of 1:10 offered the optimum performance in AlSn12Si4Cu1/steel bimetallic materials, showing a homogenous and continuous interfacial layer structure, while tinned steels using other percentages showed discontinuous and thin layers, as in 1:5 and 1:15, respectively. Furthermore, bimetallic interfacial bonding area and hardness increased by increasing the volume ratio of liquid Al alloy to solid steel substrate. A complete interface bonding area was achieved by using the volume ratio of liquid Al alloy to solid steel substrate of ≥8.5.

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Plasma–powder application of antifrictional babbitt coatings modified by carbon nanotubes

Cited by 12 publications

References 8 publications

Wear Analysis of an Advanced Al–Al2O3 Composite Infiltrated with a Tin-Based Alloy

Wear Analysis of an Advanced Al–Al2O3 Composite Infiltrated with a Tin-Based Alloy

Fabrication and Characterization of Sn-Based Babbitt Alloy Nanocomposite Reinforced with Al2O3 Nanoparticles/Carbon Steel Bimetallic Material

Development and Optimization of Tin/Flux Mixture for Direct Tinning and Interfacial Bonding in Aluminum/Steel Bimetallic Compound Casting

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